\r\nThe battle of the smartphones continues as the highly anticipated iPhone 4S goes head-to-head with Samsung\u2019s latest and greatest Android, the Galaxy S II. For those looking to upgrade their phones or just want to know how each of the top smartphones (at least \u201ctop\u201d for now given how fast upgrades are made), here\u2019s a helpful comparison of the two! If you're interested in these two phones, take a look at our iPhone 5 vs Samsung Galaxy S3 review too.\r\nSize\r\n\r\nThe Galaxy S II is one of the thinnest Androids out there, measuring 5.11 x 2.71 x .37 (all inches, HxWxD) and weighing in at 4.77 ounces. The new iPhone, on the other hand, measures in at 4.5 x 2.31 x .37 (all inches, HxWxD) and weighs 4.9 ounces. The Galaxy S II is considerably larger because of its display but it is lighter.\r\nAppearance\r\n\r\nBoth share similar features in the looks department. They both come in white and black options, but the iPhone 4S does sport a premium finish with a glass front and back, while the Samsung Galaxy S II has a very thin and sort of flimsy plastic rear case\u2026but this is what makes it so light, so it\u2019s not necessarily such a flaw.\r\nDisplay\r\n\r\nThe Galaxy S II has a larger screen than the iPhone coming in at 4.52 inches compared to 3.5 inches (but remember that the S II is lighter). So the iPhone 4S boasts a 640x960 resolution, creating a pixel density of 326ppi, while the Galaxy S II has a bright AMOLED display but it has 480x800 resolution, which means it has a pixel density of 216ppi. Looks like the iPhone wins here, but really, both are awesome touchscreen displays.\r\nOperating System\r\n\r\nObviously, the iPhone 4S runs on IOS 5 and the Galaxy S II on Android. But all the hoopla with the new iPhone was about a new operating system and the latest version is touted as the \u201cworld\u2019s most advanced mobile operating system,\u201d as well as the easiest to use. New features with the upgrade include: notification center, iMessage, Twitter integration, reminders, camera enhancements, better photo editing options, PC free, Safari, Newsstand and Siri, the voice control feature that everybody\u2019s taking about. The Multi-Touch interface in the new OS is easier since it was \u201cdesigned for your finer,\u201d making it finger friendly. But it still lacks flash support, which is a major downer!\r\n\r\nThe Samsung Galaxy S II runs Google\u2019s Android 2.3 Gingerbread OS with its own Touchwiz interface. It\u2019s claimed to be \u201cmore refined and polished,\u201d which basically means a more intuitive user interface.\r\nProcessor\r\n\r\nThe iPhone 4S has received a processor upgrade, which is an A5 dual-core chip, clocked in at 800MHz and Apple says you\u2019ll notice the upgrade with it\u2019s faster responses that make all the difference when you\u2019re launching apps, on the web and doing everything else you do on your smartphone these days. And because the A5 chip is so power-efficient, iPhone 4S has outstanding battery life (but more on that later).\r\n\r\nSince the Galaxy S II has a wider screen, it was given a Qualcomm Snapdragon S3 Processor with 1.5 GHz dual-core CPUs so that it wouldn\u2019t freeze while running multiple apps.\r\nStorage\r\n\r\nStorage is worth a quick mention with a new maximum capacity of 64GB available on the Iphone 4S. The Galaxy S II maxes out with just 16GB, and but it does redeem itself with the inclusion of a microSD card slot that can take a further 32GB, adding more storage for those who like to keep everything on their smartphones. This totals 48GB, so comes but it still comes in short of only 16GB of its rival.\r\nWireless Connectivity\r\n\r\nThey are both world phones, so globetrotters will be satisfied with both. The Galaxy S II is built and engineered to run on 4G networks, making it super fast, which means no waiting even when you have tons of apps open. Thanks to AllShare, you can also wirelessly share and stream videos, photos and music between your phone and TV, laptop and audio system. With a 4G connection you get up to 42 Mbps down speed and it\u2019s Bluetooth 3.0 compatible.\r\n\r\nThe iPhone 4S also has WiFi abilities thanks to AirPrint and AirPlay, which allows you to print wirelessly and wirelessly stream what\u2019s on your phone to your HDTV and speakers via Apple TV. It also boasts faster connections since Apple says that the new phone is the first to intelligently switch between two\u00a0antennas to\u00a0transmit and\u00a0receive, making call quality better.\r\nCamera and Video\r\n\r\nOther than Sira, the other significant iPhone 4S upgrade is its rear-facing camera, which has been bumped up to 8MP from 5MP, and it also has a custom lens with a larger f\/2.4 aperture. But the Galaxy S II 8MP camera matches that of the new iPhone 4S, making them even in this category. The details continue to be the same across the board with an LED flash, auto focus and digital zoom. The two are neck-to-neck on video abilities, too, with HD 1080p at 30fps. Both also come with software for photo and video editing.\r\nBattery Life\r\n\r\nApple placed a built-in rechargeable lithium-ion battery in their new iPhone, with a talk time of up to 8 hours on 3G. Standby time is up to 200 hours, while Internet use is up to 6 hours on 3G and up to 9 on Wi-Fi. Video playback is up to 10 hours and audio playback is up to 40 hours.\r\n\r\nSamsung added a rechargeable 1850 mAh lithium-ion battery with talk time pretty much the same with the iPhone so expect 8 hours to be the maximum.\r\nCarriers\r\n\r\nYou can get the iPhone on AT&T, Sprint and Verizon, while the Galaxy S II is available on T-Mobile, AT&T and Sprint.\r\nPrice\r\n\r\nThe iPhone 4S will put you back $199 for the 16GB, $299 for the 32GB and for those big spenders, $399 for the 64GB\u2026but this is for new contracts or those eligible for upgrades. Price jumps between $600-$800 depending on the carrier and GB variant.\r\nWith AT&T, the Galaxy S II starts at $199.99, while T-Mobile has it for $299.99. Sprint is carrying it for 199.99 also (all with a new contract).\r\nWinner\r\nReally, it's a tie. Both the iPhone 4S and Galaxy S II sport the latest and greatest tech when it comes to smartphones and share a lot of the same features. So it really depends on whether you're a devoted Mac fan or an Android lover. But whichever one you opt for, you'll end up with an awesome smartphone that will entertain you for hours and\/or \u00a0help conduct business when you're away from the office. It's a win-win situation!