I will show you easy step to hard reset TECNO S1 S .Take note that while hard resetting all of your data including pictures and apps will be lost if you have not backed them up.
- Turn on your phone and navigate to setting icon.
- Scroll down to the last menu at the bottom.
- Click “System.”
- Select the option labeled “reset options.”
- choose “factory data reset “option.
- Tap the last “reset phone” to confirm you want to erase all data.
- Enter a correct pin or pattern and select “yes erase everything” to continue.
- Congratulations you are through! Wait your phone to restart and complete the initial setup.
- Power off your device or remove and reinsert battery
- Hold and press power + volume up key.
- Release only power button when phones logo pops up.
- Press both power and volume up key simultaneously and repeat until android recovery shows up on the screen.
- Select “wipe data/factory reset” by scrolling using the volume down button and confirm using the power button key
- Select “yes” and accept by pressing the power button
- Press the power button key to “reboot system now”
- Wait patiently for your phone to reboot