- Sep 3, 2015
 
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Hello!
I have lumia 550 and after about 5min call screen becomes not responsive. When I turn off and turn on screen it works. I have done hard reset. That didn't worked. What to do? Maybe that's system problem?
				
			I have lumia 550 and after about 5min call screen becomes not responsive. When I turn off and turn on screen it works. I have done hard reset. That didn't worked. What to do? Maybe that's system problem?
	