I wont buy iPhone 4s. beaus its amazing phone. As for those who aren't really familiar with exploits, just think of it as a way to unlock the hidden capabilities of your iPhone.
Try HTC (windows or android based). It has many features and with your budget you'll be getting a top-end models.
Hero H2000 Smartphone is less than $600 in your budget. You hardly paly games and application, the same as used for the call and SMS, SNS, TWITTER etc. You needn't the Android 4.0 and Android 3.0. At least, i will choose the cheap one the else of the money also enough buy a tablet, if you want to play game in one day.
If you can't go for andriod or i-phone or at least HTC then you at least go for Symbian these were the best options.
This is completely depend on you and your requirement if you are businessman then you should buy smart phone to improve your business if you like music too much then go for iphone or other options if you are internet savvy guy then go for android so this is depend on your day to day activity
According to your i will say to you that just go for Nokia E7.Ultimate phone and it is in your budget.
This is really helpful! I've been thinking the Iphone 4S largely because the apple appstore is so much larger ... but android is catching up.If you guys could take less than 2 mins to help me out and complete this really short survey on phones it would be much appreciated!http://www.surveymonkey.com/s/HN2KJHNmuch love