Hi ,
I had bought my lumia 720 yesterday 16 june 2013 and today i have to submit it to care center as screen was gettng freeze every hour..
I know restartng the phone solves the problem but after spending 350$ on this phone, is nokia expecting us to reset the phone every hour.. sad god save nokia lumia.. I am not gonna recommend anyone this phone.
Also i had used android phones before it does have bugs but not like this where you have to restart your phone every now and then and that 2-3 times to make screen responsive.