red square appearing in tablet screen
I have bought a dell venue 7 , 6 months ago and it was working fine till yesterday.
But today morning i found that a red square is appearing round the corner of the screen once a minute and the inserted microsim was not detected by the the device.although i inserted the sim in another device and it was working without any hassle.could you please tel me what had happened to the device?
Bu iyi bir soru mu?
Puan
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