Samsung GT-B5512 The battery does not charge properly or the device turns off, Your device is hot to the touch, Error messages appear when launching the camera

Troubleshooting
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The battery does not charge properly or the device
turns off
The battery terminals may be dirty. Wipe both gold-
●
coloured contacts with a clean, soft cloth and try charging
the battery again.
If the battery will no longer charge completely, dispose
●
of the old battery properly and replace it with a new
battery (refer to your local ordinances for proper disposal
instructions).
Your device is hot to the touch
When you use applications that require more power or use
applications on your device for an extended period of time,
your device may feel hot to the touch. This is normal and
should not affect your device’s lifespan or performance.
Error messages appear when launching the camera
Your Samsung mobile device must have sufficient available
memory and battery power to operate the camera
application. If you receive error messages when launching the
camera, try the following:
Charge the battery or replace it with a battery that is fully
●
charged.
Free some memory by transferring files to a PC or deleting
●
files from your device.
Restart the device. If you are still having trouble with
●
the camera application after trying these tips, contact a
Samsung Service Centre.