I have a Tab A, 7 (Not a 10), and have the same problem. I have done a factory reset twice. No help. I've used it without the case. No help. It has done it at work, and home. Different Wifis. It has done it on and off the charger (only use a Samsung charger). And software is up to date. It has past annoying and about to pass frustrating. I'm willing to try safe mode, but need instructions on how to get there.
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