Samsung Galaxy S III AT&T SGH-I747MBAATT Manual
![Samsung Galaxy S III AT&T SGH-I747MBAATT Phone manual cover](/images/ECgItpCSxCtAzmfRHgsGlAxp/thumbs/thumb175x175.webp)
To perform a factory reset, go to Settings > Backup and reset > Factory data reset. Confirm the reset by selecting 'Reset device', then 'Delete all'.
Check for battery-draining apps in Settings > Battery. Disable or uninstall unnecessary apps, reduce screen brightness, and disable features like Bluetooth and GPS when not in use.
Try charging the phone for at least 15 minutes, then attempt to turn it on. If it still doesn't power on, perform a soft reset by removing and reinserting the battery.
Go to Settings > About device > Software update > Update. Ensure you're connected to Wi-Fi to download the latest software update.
Delete unused apps, clear app cache in Settings > Storage, and transfer photos and videos to cloud storage or a computer.
Restart the device, clear app caches, uninstall unused apps, and ensure the software is up-to-date. Consider a factory reset if the issue persists.
Press and hold the Power button and Home button simultaneously until you hear a shutter sound or see a screenshot animation.
Use Samsung Smart Switch to transfer data. Install the app on both devices and follow the on-screen instructions to complete the transfer.
Go to Settings > About device and tap 'Build number' seven times. Developer options will appear in the settings menu.
Go to Settings > Wi-Fi, turn on Wi-Fi, select the network you wish to connect to, and enter the password if prompted.