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Hello !! I am facing hanging problem with my xperia SOLA, Please suggest what to do?? .. the unlock button has suddenly stopped working and I am not able to do anything. This problem is the second time in 2 months.
You should be able to restart the phone by press and hold the power button and the volume up button at the same time until the phone vibrates.
Also make sure that you have the latest software for your phone. You can update your phone using the program PC Companion: