How to hard format my lenovo s 850?

I want to hard reset my lenovo s850, I want to clear my internal and external memory.

Pleashe help me and advice me both the methords.

Many many thanks

Guest

You should follow these points…

>> Confirm and make sure that LENOVO A850 Battery is fully charge or not empty
>> Turn off LENOVO A850
>> Press together: POWER + VOLUME UP about several second, that the warning will appear at the LENOVO A850
>> Choose: Reset Device or Wipe data or Clear eMMC
>> Make sure we already sure than we know that our application and data will be loose or clear while Resetting LENOVO A850

Carl