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Windows Central Question
I just purchased a Lumia 550 and completed preliminary set up and customized my front screens, ringtones etc to my preferences. The message appeared that an update was necessary which I allowed it do as I thought this is not unusual for a new phone straight out of the box. After leaving the phone for an hour, I came back to a blank screen and when I turn it on I now have just have the 3 button navigation bar at the bottom and top indicators (service, wi-fi connection, battery charge indicator) but otherwise a black screen - no home screens. I have tried restarting (holding on button down for 10 secs) which appears to show the phone starting normally - ie, mircosoft logo, windows logo, then day and time screen, but no ability to get to my functional screens rendering the phone totally unusable! (tried swiping up, down, sideways!)Anyone who can give me an idea of what to do? thanks so much in advance.