How do I hard reset a ZTE Obsidian phone?
You can reset the phone from the Android interface while using Factory Reset or using the buttons available on the phone. That process is called hard reset.
From any Home screen, tap the All apps icon. Tap Settings. Scroll to the 'PERSONAL' heading, then tap Backup & reset. Tap Factory data reset. If your phone is password protected, you'll be prompted to enter your Pattern, PIN, or Password. Tap RESET PHONE