I have a nova pro 7.8.
After a few months using it without issue, I suddeny have now a problem: I have a continuous popup on screem with message "System's interface has stopped" with a OK button, then a second " The process com.android .phone has beeen interrupted" and a OK button. These popups come again and again infinitly even after a shutdown and restart. This makes the device not useable.
How to fix this issue?
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