[Galaxy S II Q&A, Help & Troubleshooting] big_adventure:
1)is the overheating problem so bad??

I have no overheating problem.

2)the battery life is a hardware problem or firmware??

Killing the WiFi Sharing app fixes a lot of that, but the Android OS "bug" is a problem with Android 2.3.3 that gets better with 2.3.4 if my Nexus S is any indication? In any event, managing your use of major consumers and killing/freezing apps that eat too much prevents it from being anything I'd cause a problem. 4 hours of gaming will kill any smart phone on the market outside of a BlackBerry Curve.

3)how is the support for games so far??

Excellent. Not quite at iOS levels, perhaps, but just a hair under, and the phone VASTLY outperforms an iPhone 4.

4)the maximum size of game available for this phone??

There is no real limit. Apps in the market can now be really big (over 50MB), plus they can store hundreds of megs on the SDcard or the 16GB internal storage. Dungeon Defenders on android is over 600MB.

5)is Wi-fi problem that bad??

I have ZERO wifi "problem". The bars are maybe too honest - it will visibly dip - but I get wifi everywhere around my house and garden, and speedtests show me consistently getting over 10mbps.

6)is there some way to improve the camera quality(as even iphone 4's camera is better than sgs2,while it is only 5MP compared to sgs2's 8MP camera,which i think is due to high contrast in iphone's screen quality,so may b u get a better picture with sgs2 when u transfer them to pc.P.S-Don't get me wrong,I really hate Iphone)??

I start to get the picture that you do NOT hate iPhones - first, you keep aluding to problems as if they are proven - you don't ask "is there a wifi problem?", you ask "is the wifi problem that bad?". Second, this question and thje next one allude to areas of alleged iPhone superiority that do not exist. OK, maybe it's just a communication failure, no problem: a) The SGS2 camera, out of the box, destroys the results you get with an iPhone 4 camera. I had an iPhone 4 for around 11 months, and used it as my primary phone for around 5 of those months, and I assure you that this is true. b) The iPhone screen is woefully unimpressive in any conditions next to the SGS2 screen. It has a higher resolution, but I've yet to have that matter to me, while it suffers from INFINITELY lower contrast. I do not have any yellowing on my screen like some users complain of, so I can't speak for them.

7)any way to improve sound quality(heard iphone's is a bit better)??

I find the sound quality to be at least as good as an iPhone's in every respect. Using just the handset, it has a louder speaker and much better call quality in my experience. Through my two pairs of (stupidly) expensive earphones (Shure 535s and Klipsch x10i), I get music problems on my mostly MP3 and AAC libraries showing up before I start blaming the phone. The iPhone has much more variability in volume - there are like 12 steps in the volume scale in iOS versus 8 in Samsung Android, but the SGS2 is MUCH louder - 6 on the SGS2 is louder than anything offered up on the iPhone. Even with really good noise isolators (I use foam tips), you can't (or can barely) hear a movie on an iPhone over the sound of public transportation at max volume. Same movie file on the Sammy is OK at 6 and clear at 7, while being too loud at 8.

8)and finally should i wait for the nfc version(i seriously hope ur answer is no)??

I don't see why you would - they are going to release NFC on MicroSDs, SIMs, sticky tape you can put on the cover, basically everywhere. Why wait if you want it now? Can you use it?