We independently review anything we advocate. Once you buy as a result of our one-way links, we may possibly make a Fee. Learn more??Having said that, after several person grievances in regards to the gadgets owning troubles right after water submersion, including charger port corrosion. The ACCC have officially labelled The actual fact these devices have "drinking water resistance" stated as being a attribute misleading and proceeded While using the fantastic.[228] Moohan?? the very first headset made for Android XR is poised to carry this working experience to life in the near potential. The title ?�Moohan?? indicating ?�infinity??in Korean, connotes our perception in delivering unparalleled, immersive experiences within an infinite Room.|It runs the latest Edition of Android with as many as 5 years of protection updates, and it supports 5G, so it works on all a few important carriers.|If service is canceled or device is returned, declare are going to be invalid. We reserve the correct to demand the amount of the Verizon e-Reward Card to the Verizon Wi-fi account if, in just twelve months, support is canceled, rate system alterations from an eligible unlimited approach, or the road is connected to a tool payment prepare regardless of whether The brand new machine is activated. A suspension devoid of billing will incorporate the time that you are suspended in your 12 month chargeback window. Insert?�l phrases use.|6The heart fee software package features usually are not meant for use in the diagnosis of ailment or other ailments, or while in the heal, mitigation, cure or avoidance of condition.|LCD?�s filtering layer also inherently blocks some light and the additional depth implies that viewing angles are diminished in comparison with OLED.|I like that Motorola enables you to obtain whichever applications you wish on Each and every phone?�s cover display by default, And that i want Samsung would undertake the same characteristic without needing an app.|Both equally are run by Apple?�s new personalized A18 chip, which feels noticeably quicker than the iPhone fifteen for multitasking, speech recognition, and impression and video processing. It might also take care of Pro-amount gaming with much more realistic Visible results and lighting, and also Apple?�s AI attributes, which commence rolling out following thirty day period.|Regardless of not possessing really this kind of broad gamut, Liquid crystal display displays ordinarily supply a hundred% sRGB gamut employed by most information and can deal with a broad gamut and many of the DCI-P3 color House much too.|Samsung was Established by Lee Byung-chul in 1938 as a investing organization. Around the following 3 a long time, the team diversified into spots together with foods processing, textiles, insurance policies, securities, and retail. Samsung entered the electronics market inside the late nineteen sixties and the construction and shipbuilding industries within the mid-seventies; these places would drive its subsequent advancement.|These two variables protect against it from being increased On this checklist, however, if photography is your major precedence, this is the mobile phone to acquire.|Why you should believe in us: Mobile phone opinions and shopping for advice are actually a staple of Tech Advisor?�s protection considering the fact that the first apple iphone was released in 2007 and Android created its 1st headlines in 2008. We?�ve guided you thru 2G, 3G, 4G and 5G; we?�ve documented increasing and drop of Home windows Cellular phone, BlackBerry phones and LG phones. We?�ve viewed smartphone makers scramble to supply the most important, brightest, maximum-resolution, speediest-refreshing, toughest, flexible, foldable as well as 3-dimensional displays; we?�ve noticed an arms race in processors and graphics in the quest for the ultimate cell performance; a long-managing match of what number of cameras ??and after that how many megapixels ??they could to start with squeeze on to the handset, and afterwards cover from sight; a drive for batteries that can go ??never head all day long ??but all week; and new systems that empower waterproof and vastly boost audio.|Irrespective of exactly where you want to mount it, we?�ve acquired an abundance of alternatives to keep the cellphone safely and securely in view When you?�re driving.|θFor a restricted time only, on Samsung.com or Store Samsung App. When getting a completely new qualifying system (?�Qualifying Order??, mail within your qualifying trade-in device to Samsung in the Samsung Trade-In Plan, and when Samsung determines your trade-in product satisfies all eligibility demands, you'll get a trade-in credit history unique towards your qualifying trade-in machine to use towards your Qualifying Obtain. System types that at this time qualify for trade-in and trade-in credit rating amounts linked to Individuals designs are available on Samsung.com as well as Store Samsung App; suitable models and amounts may possibly transform at Samsung?�s sole discretion. To generally be eligible for trade-in, your qualifying unit have to meet up with all Trade-In Method eligibility requirements, which consist of, but usually are not limited to, the system powers on, retains a cost, and won't ability off unexpectedly; features a functioning Display screen; has no breaks or cracks during the display screen (Except a cracked monitor offer applies); has no breaks or cracks in the situation; has no liquid problems (no matter if visible or not); has no other defects that transcend normal use and tear; is not on the black listing; has a confirmed FCC ID; has actually been reset to manufacturing facility options; has all individual info eradicated; has all software locks disabled; and is particularly owned by you (leased products will not be eligible).|We review every single cell phone that?�s worthy of obtaining ??that?�s above a hundred on a yearly basis ??but only the very best make the grade below. Should you?�re searching for a little something additional cost-effective, see our best finances telephones and best mid-selection cellular phone guides instead.|The only true exception to this is Apple?�s iPhones ??due to their regular recognition, operators generally subsidise the cost of acquiring an apple iphone so as to lock you right into a worthwhile extensive-expression deal.|Android 12 provides more personal, Safe and sound and effortless experiences with your machine. Featuring a totally reimagined UI just for you, new privateness options which can be created for your protection and place you on top of things, plus much more seamless strategies to get correct to your gameplay or maybe switch to a completely new product.|Expense: AMOLED displays are usually dearer to supply than OLED shows due to the additional layer of semiconductor content. Even so, as AMOLED technology matures and economies of scale occur into Perform, this price gap is probably going to scale back as time passes.|The Pixel nine?�s components appears like a flagship phone. Google?�s phones are actually created with quality elements For the reason that Pixel 6, but it was difficult to tell by taking a look at them. The Pixel nine variations that, that has a smooth-touch matte back, a matte metallic end, rounded corners, flat sides, as well as a new elongated, brushed metal camera bar protruding from the rear.}
Although some apps will need precise location info for duties like change-by-change navigation, many other apps only will need your approximate site being handy. With Android 12, you'll be able to choose from providing apps usage of your specific spot or an approximate spot as a substitute.
Imagine having the ability to step into any earth in an instant ??within the bustling streets of New York City on the snowy mountain tops on the Alps. These worlds are no more just destinations to watch from afar. They can now be explored and interacted with merely by way of a gaze, a gesture or your voice.
Soon after our moderate usage of Telegram and Slack messaging, half-hour of gaming, and 20 minutes of streaming YouTube articles, the telephone experienced just below thirty% battery everyday living still left at bedtime. However, after we performed hours of graphics-major games like Simply call of Duty: Cellular you?�re taking pictures in 8K quality.|Its early solutions were being switchboards. The ability was produced into the telephone and fax producing units and have become the center of Samsung's cellphone production. They've got created above 800 million mobile phones so far.[25] The company grouped them alongside one another underneath Samsung Electronics inside the nineteen eighties.|Even though it might glance Nearly just like its predecessor, Individuals upgrading from an apple iphone 14 or previously will encounter a much even larger jump.|Our preceding favorite characteristics remain existing and accounted for. They involve the Recorder application, the decision Display screen attribute for monitoring spam phone calls, Magic Editor, the Audio Magic Eraser, Ideal Choose (which lets you develop a composite Image from numerous photos to grab the most effective faces from your topics), and Guided Body plus the Magnifier application (for people who are blind or have lower vision). Google is about to launch Android 15 as a program update for your Pixel nine afterwards this tumble.|What?�s a lot more, the the program expertise is the best it?�s at any time been, that has a slick Just one UI pores and skin about Android fourteen and 7 decades of both of those OS and security updates. A selection of truly valuable AI capabilities will be the icing about the cake.|The Pixel Studio app is undoubtedly an AI-dependent image generator that takes advantage of textual content-based descriptions (but presently doesn?�t build human photographs), or it creates stickers from chosen items from a photo in just your camera roll.|Having said that, it has thick bezels with a visual crease on its inside display, lacks suitable optimization for many 3rd-celebration applications on its inside display, and is without doubt one of the heaviest devices amid The existing lineup of foldables.|With Android 12, you'll be able to see when an application is using your microphone or digital camera owing to a whole new indicator in the telephone?�s standing bar.|The overwhelming majority of telephones these days run Android ??Android fourteen currently being the latest publicly-introduced Edition. Apple?�s iOS platform, presently on iOS 18, can have a decreased market place share but builders almost always launch their apps on iOS very first. On account of this tactic, it has probably the greatest application stores yow will discover.|This web site utilizes cookies to personalise your experience, analyse internet site visitors and keep track of products stored inside your purchasing basket.|The Pixel phones carry on to glow with crisp and vibrant lower-light-weight pictures, Despite the fact that at this stage, the Pixel 9 can take only marginally superior pics in comparison to the Levels of competition. The Pixel 9 also receives a completely new UI in its Panorama manner to manual considerably less professional photographers, and it adds Evening Sight guidance for small-light, broad-format pictures.|The Pixel 9?�s Super Res Zoom attribute will get advancement in its graphic processing, and it can help shots captured from 5x to 20x zoom on the telephoto lens look clearer with additional noticeable details. Our effects yielded significantly less grain than Using the Pixel eight Pro, plus they looked a little bit clearer compared to the Galaxy S24 Extremely?�s 5x zoom.|The UI feels alive with every single tap, swipe and scroll?�responding swiftly and expressively with smooth movement and animations. Android twelve delivers enhanced technique overall performance so your unit can operate in best harmony with you.|Pixels can are afflicted by reduce aperture at greater resolutions, as transistor dimensions can?�t be shrunk further more, lessening peak brightness and squandering Strength.|Although it's only two digicam lenses, the Pixel nine?�s photo processing is borderline magical. It offers new Picture features including Add Me, which takes advantage of a combination of AI and AR to consider team photographs without a tripod or some other person capturing photos, and Reimagine, which lets you manipulate pictures by introducing fireworks or mountains, say, or modifying colors employing Google?�s Magic Editor computer software. The Pixel nine also contains our favourite Pixel 8 options: Ideal Take, which lets you make a composite Photograph from various pics to seize the very best faces from the topics, Magic Eraser, which might take out distractions and undesired background objects in photographs, Audio Magic Eraser, which gets rid of unwanted sound from the videos, Simply call Screen, which tells you who?�s calling you and what they want prior to deciding to pick up, and assistive attributes like Guided Body and the Magnifier app for people who are blind or have minimal vision.|Also new is the decision Notes aspect, which lets you file and produce a transcript of one's telephone phone calls; this is beneficial for scenarios like getting a procuring listing. This characteristic does not activate automatically; in its place, you?�ll really need to toggle the function on when you hook up your contact, and Google will then audibly notify you and your caller that the conversation is becoming recorded.}
It?�s hardly ever been easier to change to Android and take a look at out the ideal system to suit your needs. Starting up on Android 12, you'll be able to transfer all your essentials by connecting your aged telephone to the new Android which has a cable or shared WiFi connection. Your memories and info will transfer, strain-free of charge?�even from iPhone® (welcome!).
With Android twelve, it is possible to see when an app is using your microphone or digital camera thanks to a fresh indicator with your cell phone?�s position bar. You should retake the first shot, and When the topics are much too shut, you may see the two images merging awkwardly. But when it comes collectively, the final results are spectacular.|??Burn|Burn up|Burn off|Melt away}-in??is a danger, as pixels can degrade at distinct speeds if one particular Component of the Display screen consistently shows a static image.|It offers a massive boost in resolution at 5x, but using the S24 Extremely?�s 10x zoom brings about to some degree fuzzy details as compared. Samsung also included a chance to swap amongst 4 lenses although capturing 4K 60 fps video; this feature can help add extra flexibility in capturing moments at distinctive angles and focal lengths.|Furthermore, you can use copyright, Google?�s new AI assistant, which performs in tandem with Google Assistant to offer composing solutions in addition to brainstorming and summarizing info and more.|In copyright, all through 1999, some DRAM microchip makers conspired to price take care of, Among the many accused incorporated Samsung. The worth deal with was investigated in 2002. A recession began to take place that year, and the cost repair finished; on the other hand, in 2014, the Canadian govt reopened the situation and investigated silently.}
Your determination is less complicated if you want an iPhone ??Apple only releases a couple of handsets each and every year, indicating your choices are rather limited. Your option of Samsung Galaxy phones is more prevalent, even though it helps make factors far more uncomplicated when you?�re established on Samsung.
Dwell Translate is a fresh AI feature that interprets cellphone phone calls in several languages in genuine time over the system. I tested it by using a conversation in English with a pal who was Talking Spanish, and Live Translate did a superb occupation of keeping up, but inside our tests the function didn?�t cope with everyday translations, lengthy discussions, or pauses very well??it's better suited to shorter convos, for example earning a reservation at a restaurant once you?�re browsing A further state.|Flaws but not dealbreakers: Apple's A lot-hyped AI functions aren?�t readily available at start, which happens to be disappointing. A few AI features are coming during the iOS eighteen.1 program update rolling out in Oct, like a smarter Siri, which often can use context to answer your thoughts; a photo clean-up Software which will eliminate undesirable folks or objects from pics; new producing equipment to create e-mail audio extra Specialist; and email summaries. Supplemental characteristics will roll out in December and all through 2025.|much better than any of our other picks, and it gets only mildly heat with all that intensive processing. Coupled with its 5,000 mAh battery, this new components gives the Galaxy S24 Extremely excellent battery everyday living?�at bedtime, following a day of heavier use, it however had about thirty% on the battery remaining.|But overall, the OnePlus 12 is an outstanding smartphone that?�s easy to advocate. If you?�re hunting for a foldable, consider the OnePlus Open in its place.|Simply because you reach the conclusion of the monitor doesn?�t indicate you should get to the stop of one's screenshot. Scrolling screenshots help you seize all the material about the web site in a single image.|Tremendous AMOLED is a internet marketing phrase from Samsung. This means a Show that includes the capacitive touchscreen right while in the display, as an alternative to it getting a independent layer along with the Screen. This can make the Exhibit thinner.|Many thanks for browsing. We?�d want to check with you several questions about your expertise to help you us increase our Internet site. It need to just take a couple of minute. Question of what's your Key cause for browsing Android.com?|It even now has the gimmicky temperature sensor. We called the temperature sensor on the Pixel eight Professional a gimmick, and never A lot has changed While using the Pixel nine Pro. It however enables you to measure the temperature of different objects?�like Solid iron, material, food items, glass, liquids, metals, plastic, Wooden, and Home windows??as well as|in addition to|along with|and also|together with|and} its uncomfortable technique for measuring body temperature by swiping throughout your forehead. I have never encountered a state of affairs exactly where I desired or desired to use this sensor.|Even the most crucial and telephoto cameras, a slight weakness of some previously OnePlus telephones, are now Among the many greatest all around. Nonetheless, the large angle and selfie cameras could even now be improved.|Provided you?�re a admirer of the look, the compromises Here's concentrated across the cameras. There?�s no telephoto lens, indicating zoom shots are disappointing, while the ultrawide OnePlus has opted for alternatively flatters to deceive.|The Pixel 7a was our previous funds pick On this guideline, and it?�s an excellent entry-stage phone, nevertheless it?�s now promoting for $500, the identical selling price as the Pixel 8a. It'll be a fantastic budget choice if it drops under the cost of the Pixel seven and seven Professional.|Who it?�s for: The Galaxy A15 5G is a superb funds Android choice that provides just about everything you may need, with not many trade-offs.|Who it?�s for: People who want a bigger cellphone that captures the ideal visuals will such as Pixel nine Professional.|The Pixel 9 Pro?�s Video Increase characteristic, which needs you to add your films for the cloud by using Google Photos to boost your video specifics, shades, and stabilization, is hard to employ, mainly because it calls for you to turn the choice on in advance of pressing record.|Learn the way to use your Android device and obtain probably the most away from Google. Get move-by-step guides and instructional movies regarding how to setup your cellphone, personalize your options, and use apps.|Who it?�s for: Individuals who prefer greater screens, the most effective cameras for images and movies, and flagship-degree efficiency and battery will such as the iPhone 16 Professional. The apple iphone sixteen Pro Max is for those who want every thing the 16 Professional presents but with an excellent even bigger Screen and a longer-Long lasting battery.|Manufacturers are progressively opting for AMOLED shows, with Liquid crystal display largely reserved for budget smartphones.|These strips let AMOLED screens to move the electrical present more rapidly than OLED options to accomplish faster refresh charges that support the display screen experience smoother and much more responsive. |Its new 50MP principal digital camera sensor generates lively, flagship-degree photographs and video clips seldom observed on a lot of clamshell phones. Its improvements more than the prior Z Flip would allow it to be easy to recommend as a decide on if we had been a lot more self-confident in the sturdiness of folding telephones.|Scientifically Talking, there?�s no personal white gentle wavelength. White gentle is a mix of all other noticeable colours within the spectrum. Hence, LCD backlights have to create a pseudo-white gentle as proficiently as you possibly can, which can then be filtered into unique colours within the liquid crystal ingredient.|Normally, you?�re obtaining an all-rounder you know can get AI functions during the around upcoming and it?�s closer to the professional Max than typical looking at the Motion Button has now trickled down and The brand new Camera Handle button isn?�t exceptional to the professional models.}
Odds are, you?�d come to feel the main difference in high quality and usefulness everyday, and because People cheap phones will often be currently a 12 months or two outdated after you invest in them, yours would be three or 4 years aged by the point you fork out it off??long previous the last software program update it will get. You?�re nearly always greater off spending a tad more for a newer and far better mobile phone you?�ll love using for a minimum of two decades.|The shorter reply is Certainly; AMOLED Screen tech is especially extraordinary on smartphones, with AMOLED, OLED and various variants in the monitor tech virtually utilised exclusively at the very best-conclude with the smartphone sector. |Consider resetting your telephone to factory options Vital: A manufacturing facility details reset will get rid of all details out of your cell phone.|Excellent Android tablets are couple and far amongst, but for those who don?�t want an iPad, Google's Pixel Pill is your best bet.|A different common possibility is to order an unlocked cellular phone outright. For a lot of the finest Android phones, having said that, Meaning spending $600 or even more suddenly (the Pixel 7a aside). If that?�s a lot of to your funds, You should buy an excellent Android cellphone unlocked??which means|which suggests|meaning|which implies} it?�ll Focus on any suitable provider?�for $two hundred to $three hundred, or simply less if you?�re willing to sacrifice a handful of features. We cover those telephones within a independent manual to the very best budget Android telephones.|Lastly, the AM component in AMOLED means Energetic Matrix, as opposed to a passive matrix engineering. Inside a passive matrix, a fancy grid program is used to manage specific pixels, exactly where built-in circuits Management a demand sent down Every column or row.|It?�s the 1st smartphone that could genuinely switch a DSLR for many people, this kind of is the quality and flexibility on the method on present. It contains 4 50Mp rear lenses plus a 32Mp selfie camera, all of which acquire excellent shots in fundamentally any atmosphere.|Expend considerably less time ready and even more time participating in. Android 12 helps you to Enjoy as you down load, in order to soar straight into gameplay while not having to watch for the entire obtain to finish.1|The image higher than is an in depth-up shot from the AMOLED Display screen about the Samsung Galaxy S8. The RGB triangular pattern is clearly demonstrated. To The underside in the graphic, the inexperienced and red LEDs are off plus the blue LEDs are on only slightly. This is why AMOLED shows have deep blacks and good distinction.|You can even go ahead and take provided information and export it to Google Docs, change it into a Gmail draft, find text, or create a url. It?�s just like a Google look for with textual content??the more|the greater} specific your question is, the better the final results.|Google will now not promote the Pixel 7 and Pixel seven Professional, but they?�re even now great phones if yow will discover them for cheap at third-social gathering vendors like Amazon or Best Purchase.|We can easily advocate many of the telephones below, but Each and every design stands out for specific good reasons. Whether you?�re searching for a cellphone with AI characteristics, good cameras, fantastic gaming general performance, wonderful battery life, a folding screen or just benefit for revenue, there?�s a little something in this article that should attract you.|The Pixel nine Pro is additionally an improve more than the Pixel 9 in that it's got yet another digital camera lens: It has a third, forty eight-megapixel lens on the back again using a 5x zoom that retains element even if fully zoomed in. It's going to take the top pics of any Android phone we?�ve tested, so you don?�t should tinker While using the settings to acquire spectacular illustrations or photos, while the Pixel nine Professional delivers guide controls to adjust matters including white harmony, focus, shutter pace, and ISO If you prefer much more granular control of your pics.|Quick Share to iOS and Android gadgets readily available by sending shared link: personal documents shared simply cannot exceed 3GB (for a complete of 5GB each day) and website link will expire following two times; requires a Samsung account and internet connection.|*Photographs simulated for illustrative applications. Sequences shortened and simulated. Actual UI might be distinct. All requirements and descriptions offered herein could possibly be unique from the particular technical specs and descriptions with the product. Samsung reserves the proper to create adjustments to this document as well as the merchandise described herein, at anytime, without having obligation on Samsung to supply notification of this kind of alter.|An all-new conversation widget places the discussions While using the persons you treatment about front-and-center on your home monitor this means you hardly ever miss out on a chat from the loved ones. You can also see skipped calls, birthdays and much more at a look.|It provides far better video high-quality when compared to the Pixel nine. The Pixel 9 Professional delivers the identical Video Strengthen attribute because the Pixel eight Pro; this utilizes AI to system your video clips to enhance your online video information, colours, and stabilization. However, it provides the opportunity to report in 8K video clip quality, supports HDR+ good quality, gives superior-resolution zoom approximately 20X, and can pull 33-megapixel HDR images from the footage.|AMOLED panels in many cases are much more vivid and colourful than Liquid crystal display alternatives, but This may vary involving companies. The excellent news is that a lot of smartphone makers Allow you to customise the tint and vibrancy of your cell phone display, so whether it is just a little excessive, you can tone it down to suit your tastes superior.|Reimagine is a new function in Google?�s Magic Editor application that helps you to alter a particular portion of your respective Image.|Your smartphone will also end up containing a great deal of non-public knowledge, so protection is crucial?�a telephone that ships with outdated computer software, doesn?�t get protection patches, or incorporates a documented heritage of protection flaws will not be a fantastic order, it doesn't matter the worth.|We?�ll exam the OnePlus thirteen from our recent picks when it?�s accessible to see how it stacks up towards our present picks.|Because 1990, Samsung has increasingly globalised its things to do and electronics; especially, its cellphones and semiconductors are becoming its most critical source of money. It absolutely was in this era that Samsung began to rise as a world Company inside the 1990s. Samsung's design department was awarded contracts to construct among the two Petronas Towers in Malaysia, Taipei a hundred and one in Taiwan plus the Burj Khalifa in United Arab Emirates.|You can even choose your recreation manner for overall performance or battery life, irrespective of whether you want a richer gaming practical experience or more time play session.|And when pricey, the optional Images Kit accent tends to make the working experience even closer to a true camera.|For an excellent bigger display screen and the longest-Long lasting iPhone battery, the apple iphone sixteen Professional Max is a wonderful apple iphone??but it|however it|nevertheless it|nonetheless it|but it surely|but it really}?�ll cost you.|Nonetheless, if you primarily use the most crucial lens anyway, you received?�t be dissatisfied. And with 6 a long time of stability updates, the Nord 4?�s longevity is sort of pretty much as good since the Pixel 8a?�s.|Thanks to Galaxy Z Assurance, you?�re lined for damages with a one-time discounted display screen replacement of $200.|For getting the latest safety update obtainable for your system, Ensure that you might have the newest Android Variation available for your unit.}
Also integrated will be the Interpreter feature, which can translate a dialogue in serious time when two consumers are jointly, so you're able to check out the translated text on two playing cards: just one for That which you?�re declaring and the other for whoever is Talking or texting. You can easily access it from the short Options menu by swiping down twice from the notifications shade.
Traditionally, most Android telephones used to obtain about two yrs??worth of trustworthy program support. Even so, lately Samsung and Google are pushing update support as much as seven several years, depending on the telephone.
Both equally Professional designs are powered by Apple?�s new customized A18 Pro processor, which feels marginally more quickly than previous yr?�s Pro phones. The brand new chip powers new digital camera capabilities, impending AI capabilities, and offers enhanced graphics and overall functionality for top-conclusion online games.
?�We?�re thrilled to spouse with Samsung to construct a brand new ecosystem with Android XR, transforming computing for everybody on upcoming-technology units like headsets, glasses and past.???�XR has quickly shifted from the distant guarantee into a tangible actuality. We believe it's got the probable to unlock new and meaningful methods to interact with the whole world by definitely resonating with the each day lives, transcending Actual physical boundaries,??mentioned Won-Joon Choi, EVP and Head of R&D, Cell knowledge Enterprise.
Display screen: Plenty of people shell out various hrs daily taking a look at their smartphone screen, so it should really keep on being sharp and simple to study, even outdoors. Better refresh costs also can make screens simpler over the eyes by eradicating the jerkiness of rapidly scrolling.} 갤럭시S25 사전예약