Keep plugging in the charging cable
That does not sound right. I have had several Samsung tablets and never saw that. If the tablet it new it sounds like it might be defective.
Testimonial: "After powering my Samsung 8.0 tablet up and in less than 2 minutes the following message appears "unable to open application. Device is over heating". The tablet will then stall. After plugging in the charger it will work just fine if the charger is lest plugged in. I also noticed that the battery drains quickly if the charger is not plugged in."
My Samsung Tab 3 10.1 does the same thing :-(
It was not new, less than a year old when it started doing this.
If your tablet is acting up and within warranty initiate a warranty request. There is not much else you can do. At about 4 months my Tab 3 8.0 suddenly began discharging at a rate of 20% per day EVEN WITH POWERED OFF. It took 3 returns with no improvement, but Samsung finally replaced it. If a device is doing something outrageous or grossly abnormal you are wasting your time posting on forums or self-help sites.
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When I open my Samsung 8.0 and in less than 5 minutes a message appears "unable to open application, device is over heating". The application will close. If I plug the charger in, the message will go away and will not re-appear as long as the charger is plugged in. Additionally, the battery will lose power quickly if not plugged in.
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