This fix will only work for the known overheatimg problem of NO. 1 X6800, which hat two batterys.
I'm sorry that I don't have any pictures.
You need a torx screwdriver,
a flathead screwdriver and
a soldering iron or a scissor.
Remove the back of the phone with the flathead screwdriver.
Remove the extern 6000 mAh-battery and all SIM-Cards + memory card.
Remove the 14 torx-screws.
Remove the 6 clamps, which hold the phone together and open the Phone. Do this gently! They get damaged really easily!
Now you can see the intern battery. It's bonded to the plate with a glue strip.
Remove the wires, connected with the battery with a soldering iron or a scissor.
Gently remove the intern battery. DO NOT crush or bust it. DANGEROUS.
Make sure the switch for switching between the batterys is not damaged and uses the extern battery. Do NOT remove it.
Reassemble the phone by putting the clambs on, turn the torx-screws in, put your SIM-Card(s) and the memory card back in. Insert the extern battery, close the back of the phone with the flathead screwdriver and you're done.
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