The only think is that to change the screen for me it can change from Ovi store to Nokia store; however it is right upgrades my phone and it started to behave weirdly. The error has occurred irregularly but often after 15 min, I am sure that to find it again. It screen is stop responding and only keys are working screen touch is stop. So that I can do many thing using the key. Then suddenly everything is back to normal and also sometimes keys stop working so I not able to receive a call or call them
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