How can I perform a factory reset on my phone?

Warning: this action will format consumer data, and the memory and settings of your product will return as released from factory.
Please make sure the battery percentage is higher than 30%.
Go to “Settings” ->”Phone settings”-> select “Restore factory settings” and then press “OK” -> Input password “1234” and then press “OK” -> Press “OK -> Wait for factory reset -> Done.

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