This is the worst phone I have ever used. The OS is very slow. Gets hanged whenever it wishes. Many time during hang we have to do a hardware reboot I mean remove the battery and then put it again.
If you press any button it takes 3 seconds for the next screen to popup. The worst part is during the data transfer through PC. When connected to USB port does not get recognized until we install pc suite. The data transfer rate is of ~ 1 MB/min unimaginably slow. Other mobiles like that of sony or Motorola gets detected as a usb device and so the data transfer is very fast in them without installing any separate software. Even nokia care centers is not serious about resolving the problems. Instead they intend to grab as much money as they can in the name of part replacement..
My next mobile will not be a nokia.