https://community.o2.co.uk/t5/Android/Sony-Xperia-T-goes-switched-off/m-p/389952#M12850 Remove any apps you have recently added or updated. If problem is persistent factory reset your phone. If still happening after a reset suspect hardware fault and take in for repair. Mon, 21 Jan 2013 09:10:09 GMT MI5 2013-01-21T09:10:09Z https://community.o2.co.uk/t5/Android/Sony-Xperia-T-goes-switched-off/m-p/389948#M12849 <P>I recently got Sony Xperia T. Unexpectedly it goes switched off and I've to press the vloume up key and the power key to restart. I don't know whether it is a software or a hardware problem</P> Mon, 21 Jan 2013 09:06:24 GMT https://community.o2.co.uk/t5/Android/Sony-Xperia-T-goes-switched-off/m-p/389948#M12849 Anonymous 2013-01-21T09:06:24Z https://community.o2.co.uk/t5/Android/Sony-Xperia-T-goes-switched-off/m-p/389952#M12850 Remove any apps you have recently added or updated. If problem is persistent factory reset your phone. If still happening after a reset suspect hardware fault and take in for repair. Mon, 21 Jan 2013 09:10:09 GMT https://community.o2.co.uk/t5/Android/Sony-Xperia-T-goes-switched-off/m-p/389952#M12850 MI5 2013-01-21T09:10:09Z