Whenever my friend restarts her Samsung Galaxy S5, it shows a message saying "Check battery cover". Is there any way to get rid of this message? There is no "do not show again" button when it shows up, by the way.
The battery cover doesn;t form any sort of connection on the phone and is not part of any circuitry. It is almost certainly being caused by a faulty or not so good fitting SD card. Try these individual steps - they are not in any order
1) Save your SD card data and then format the card
2) If the above fails, remove the SD card press gently on the SD card holder and replace SD card
3) If the above 2 fails to cure it, then put a new SD card in, that should cure it.
Cheers
Lal1954