PHONE IS NOT CHARGING "UNSUPPORTED CHARGER"

So this one is tricky sometimes we get this error and we start looking for other charger.
But changing the charger is not the solution.
You simply need to follow the following steps:

• Remove your phone's battery.
• Clean carbon of the Battery.
• Reinsert your phone's battery and now try 

Here we go phone is back to normal. But it doesn't work all the time sometimes there is issue in your charger also and sometimes in battery so always try charging with some other charger.
If battery or charger is damaged so you need to replace them obviously.

If this helped you please comment below.