Which smartphone is better? iPhone 4s or Samsung Galaxy S2? Opinion pls

It depends on your needs. For me the S2 is perfect because I can easily make my own Apps for it Its possible for the iPhone too but its much easier for Android in my opinion. Another thing I like about my S2 is the big screen I like to read e-books on it and the iPhone was just too small for me at this point because I need to scroll more often. If you want a massive Phone you probably need the iPhone because its so heavy you start thinking you got something more valueable in your hands, thats not the case if you got the S2 in your hands. I think it should be a bit heavier. Another thing I don't like is this Update-thing... I mean if you got an iPhone you get the newest version of iOs instantly after its released even if you got an older generation. Android Phones need months for a new update or even worth they don't get a new version... If you want an easy phone just for apps and phoneing you should get an iPhone, if you want to have a bit more control of your phone you should get a Android Phone and probably the S2 if you like big ones. ;)

I think it depends on the person who will be using it. But both of them are really nice phones! But I would still go for iPhone 4s.

I think the best is Samsung Galaxy S2 because its more cheaper than Iphone 4S, and Samsung with android os give us full access to all android features by rooting android meanwhile Iphone not give us that! that's my opinion