SOLUTION 1 FOR ANDROID 5.1
After the phone has finished its factory reset it will reboot and you will be prompted to choose the desired display language. After choosing the correct language please follow the next steps:
- Connect the phone to a Wifi Network
- The next screen will ask you for the Google Account
- Tap the text field in which the account should be inserted until the Keyboard comes up
- Tap and hold the “@” character until a Settings menu pops up
- Select Google Keyboard Settings
- Tap on the 3 dots in the top part of the screen (or More depending on what Android OS you are running)
- Select the Help&Feedback item and select any item in the list that will follow
- Long press to select any text on this page and click on Websearch in the upper right corner
- A search field will be shown (delete the text inside the search field)
- Type Settings in the search field
- Tap “About Phone” and tap 7 times on the Build Number to enable Developer Options
- Return to the previous menu and open the Developer Option that just appeared
- Allow OEM Unlocking and tap Back two times
- Restart the device
- Connect it to Wifi again
- Notice how you won’t be prompted to log in the previous Google Account and instead the phone will ask you to ADD a new Google Account
SOLUTION 2 FOR ANDROID 5.1
- Connect the phone to a Wifi Network
- The next screen will ask you for the Google Account
- Swipe down the notification bar to give you access to Settings Panel
- Type Settings in the search field
- Tap “About Phone” and tap 7 times on the Build Number to enable Developer Options
- Return to the previous menu and open the Developer Option that just appeared
- Allow OEM Unlocking and tap Back two times
- Restart the device
- Connect it to Wifi again
- Notice how you won’t be prompted to log in the previous Google Account and instead the phone will ask you to ADD a new Google Account