I have downloaded and installed the opera mini 5.1 on my c3-01 but after restart the phone the menu and the "go to" doesn't work. Do you have any idea how to solve this problem. If I delete opera, after restart it works fine again.
Where did you download the Opera Mini? From the Ovi Store?
The problem with this phone is the missing navigation button, which also is not emulated with the touch screen. That's the cause, why many apps like Google Maps don't work on this phone - the programs are looking for signals from keyboard, which never come.
Programs from the Ovi Store should be all working.