Is there any significant difference between the iPhone 4 & 4S? I know that there is Siri for 4S. Other than that what's there in 4S?
Or, should I go for BlackBerry 9900 which is the most expensive BB or an iPhone 4?
I'm don't use the Camera and I don't use it for Gaming either.
All I need is E-mail, Internet, Apps (to use official apps of Google, Evernote, Facebook, Twitter etc. only), Business apps
I'm looking for an iPhone or a BB only.