The Xperia Z1 Compact is Sony's premium camera phone. It is similar to the Xperia Z1 model except smaller and less expensive. Its key feature is a 20.7 megapixel sensor. Upon release the available colors were white, black, pink, and lime.
This device can be identified using the model number (D5503)
When I make or receive a call, the phone screen goes black and is unresponsive for several minutes. Sometimes, I have to rapidly slap the screen for a few minutes to make it come back to life. Any ideas how I can fix this?