First option - If you have a Google Account, you remember the password to it and you have the Internet connection. You can perform the following steps:
- The system should alert you after having typed it wrong password five times.
- Wait for about 30 seconds and try typing it again.
- In the left corner of the unlock interface there should be "Forgotten the password". Click it.
- Now input your Google Account password and the LYF Flame 4 should be unlocked.
Second option - LYF Flame 4 without Google Account. Use the factory reset. However, be aware that you may lose all data on your LYF Flame 4