I have has the 3GS and 4 but switched to the SGS2 2 weeks ago.
This is for those looking at both phones or switch from one to the other. I am not an apple or android fanboy and they both have pros and cons.
CONS OF THE SGS2
- SGS2 Icons defiantly aren't as slick, this can be fixed somewhat with folder apps. They need to be larger and have a standard shape like the iphone.
- The apps aren't quiet as smooth (probably due to android running different resolutions on many phones). There are a lot less great games (which doesn't worry me). A couple that i haven't been able to replace are TomTom and autostitch and some games. Some apps work on one android but not others. This is generally noted in the comments.
- The phone is large and needs to be held slightly differently. Its ok once you get use to it.
- iOS is simpler to use. The settings are easier to navigate but there are a lot less options so this is understandable.
- iOS is more refined on the iphone.
- notifications aren't as swish but there are a lot more options like bluetooth, wifi, gps, rotation toggles.
-The battery life is probably 70-80% of the iphone 4. Still enough for a full day unless you are a heavy user.
- While the apps are updated regularly i am not sure on the operating system. Its great with iOS to get regular updates. This said the level of customisation on android negates this a bit.
PROS OF THE SGS2
- No iTunes. its awesome to not have to sync and be locked down to 1 CPU. The SGS2 has a proper file explorer and to be able to drop and drag files. When you do connect to a CPU (wifi, bluetooth of USB) your phone becomes an external drive.
- Touch buttons beside home key. The home button on the iphone isn't great. The 2 extra buttons on the SGS2 make a massive difference. One button is to go back and one is for settings and
- THE SCREEN. the main reason i changed was the screen. 3.5 just wasn't enough and the iphone 5 will only be 3.7 or 4 inches. the SGS3 to be released early next year is tipped to be edge to edge 4.5". The resolution isn't quiet as sharp if you look really closely but the size and the color of AMOLED are great. Black is black.
- Flash is great. I no longer go to sites and cant play embedded video. (there is still 5% that dont work i.e. veetle.
- being able to plug in a usb device into the SGS2, copy files on and off etc.
- TORRENTS!! tTorrent enables me to download a torrent straight to my phone then play music, movies etc without even starting a cpu
- Customization. There are a lot more changes that can be made to the interface, home screen and lock screen. Widgets are ok but take up too much room for my liking. Toggles for bluetooth, wifi, gps & rotation on notifications are really nice.
- The camera and video are noticeably better. It has a lot more options such as scene mode, exposure, timer, resolution, white balance, iso, blink detection etc
- The android market was better than i thought. I can get everything i had on my iphone except tomtom (using navigon) and autostitch. As mentioned the games are better in iOS. The downloads in android generally seem smaller. Being able to try an app for 15min and get a refund is nice. Note, there has been a major update to the android market which looks like a major improvement, yet to get so i cant comment.
- Replaceable battery and memory card. Currently have 16gb + 32gb micro SD giving me 48gb plus i have a 128gb USB stick which i can plug straight in with a small adapter.
- The samsung version of android is pretty good. little things like contacts on home screens with quick access, slide left or right on contacts to dial or message are nice.
- The web browser is super smooth and quick and has flash but it doesn't have tabs and could be a little more user friendly.
- Has FM radio, not critical but nice
- Many ios apps are also available on android - tunein radio, ping, field runners, angry birds, mSecure, Quick office, dropbox, sugarsync etc.
- Build quality. I was very suspect on the build quality before i got the SGS2 as its all plastic and gorilla glass. However it feels rock solid, there are no squeeks, the screen is very tough and its more comfortable to hold than the iphone. The iphone is heavier and more solid however as its all glass and heavy i fell like i would rather drop the SGS2.
- Task manager on the SGS2 and app switching is a lot smoother and easier to use than the iphone.
- Price, in Australia the iphone 4 is $859 to $999 for the 32gb from apple. The SGS2 is $700-$750.
Overall they are both great phones and the iphone 5 will catch up but the SGS3 will be out early next year and be another big step forward.
I kept my iphone 4 incase i didn't like the android but after 2 weeks on the android i wont be back to iOS.
Tying the iphone to itunes is a massive pain and the whole system is to locked down and restricted by apples policies.
The SGS2 hardware is way ahead, the ios is probably less refined but allows a lot more options. Personally android was the best thing that happened to iphone users. Apple cannot afford to hold back on hardware or software updates.
The only people that i wouldn't recommend change from the iphone to the SGS2 are people who use it for lots of games or for those that aren't as tech savy and dont need all the extras.
Once again this is not beating up on either phone just giving my thoughts as a user of both phones so others can make a more informed decision.
Cheers
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Update 1:
I have just found apps called launchers. Basically you can totally change the appearance of your folders, home screen, hide apps, rename apps, change icons of theme, change grid layout (4x5, 5x5, 4x4), change the transition between pages etc. Pretty nice
Update 2:
Launchers have just changed the game. Basically the old samsung interface was a bit boring. Now with a launcher (GoLauncher) the interface looks better and is easier to use than the iphone (personal opinion). A swipe up reveals all the pages which makes widgets a lot more usable. The theme i am using is glass which looks as good the iphone.