Alba 4 723/9135 Instruction Manual

To perform a factory reset, go to Settings > Backup & reset > Factory data reset. Confirm your selection and wait for the phone to reboot.
Check if the charger and cable are functional by trying them with another device. If they work, inspect the charging port for debris or damage.
Reduce screen brightness, disable background app refresh, and turn off Bluetooth and Wi-Fi when not in use to extend battery life.
Perform a soft reset by holding the power button until the device restarts. If the issue persists, consider clearing the cache partition.
Turn off the phone, remove the back cover, and locate the SIM card slot. Insert the SIM card with the gold contacts facing down and replace the cover.
Ensure Wi-Fi is enabled and airplane mode is off. Restart the router and phone, and check if the correct Wi-Fi password is entered.
Go to Settings > About phone > System updates. Check for updates and follow the prompts to install any available updates.
Clear unnecessary apps and files, restart the phone, and ensure the software is up-to-date. Consider performing a factory reset if needed.
Press and hold the power and volume down buttons simultaneously until you see the screenshot animation.
Ensure the SIM card is properly inserted. Try cleaning the SIM card and slot gently, and restart the phone.