Why Am I Getting A Verification Failed Error and Having To Restart My Phone

[The Pinnacle Of Cynical]

I recently got a Samsung J7 and it worked beautifully for the first week. And then I got this error after my phone restarted suddenly telling me it could verify internal integrity and I had to factory reset my phone. I didn't think much of it and did what it said. Then a day later it happened again. And two days later again. And then twice in one day. I finally said enough is enough and backed up NOTHING onto the phone, not even contacts and it worked for three days. And 5 minutes ago it happened again. I honestly don't know what to do because I've never heard of anyone having this issue. The most annoying bit is actually the fact that some of my apps (Amazon Music being the first to come to mind) will no longer allow me to sign in, as I've used up the maximum amount of devices. Can someone please tell me what to do?

UPDATE:
Just happen again, this is now the 10th time. Do I get a reward now?

 

[B. Diddy]

Welcome to Android Central! Does this also happen in Safe Mode? How to turn on safe mode on Samsung Galaxy J5. If so, then I would suspect either faulty hardware or firmware. You could try reinstalling the firmware using Smart Switch: http://www.sammobile.com/forum/showthread.php?t=29914. But if that doesn't work, then contact Samsung (if the phone is under warranty), or bring it back to the store where you bought it.