Android phone can be formatted in two ways: a) Factory reset: In factory reset, your...

Android phone can be formatted in two ways:

a) Factory reset: In factory reset, your phone is being formatted to factory level. Means all the settings will go by default and all the internal data will be deleted. To factory reset a phone dial *#*#7780#*#*.

b) Hard reset: To hard reset a phone dial *2767*3855#, this will delete all the data (including internal and External SD data) as well as settings of android phone. Don’t try this code for testing purpose, until you are not sure. It will not ask  for any confirmation.

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