Using the Nokia 620 for about some time now, apart from the usual niggles my phone is really starting to bother me. The latest issue is that it crashes and freezes randomly. I have reset it once back to the factory settings, still the problem is not going away. The last time it freezed I opened its battery and switched it on, once it turned back on could not make any calls still the network bar was full, played music from the nokia mix radio app it was showing that it was playing, though the minutes wasn't rolling and there was no sound emanating. Also during this time opening the settings menu redirects me to the home page. Im in India, so the last update i have is Lumia Black. Looking forward to your suggestions, really dont want to switch away from Nokia. Thanks 