Apple iPhone 12 mini 2020 5.4" 128GB Green

This particular model of the Apple iPhone 12 mini comes with 128 GB of internal storage.

It runs on Apple's highly intuitive and secure iOS operating system.

No, this specific model of the Apple iPhone 12 mini supports 4G network connectivity.

To extend battery life, you can optimize settings by checking battery usage in Settings, enabling Low Power Mode, reducing screen brightness, and ensuring your iOS is up to date. Avoid exposing the device to extreme temperatures.

The Apple iPhone 12 mini is powered by the high-performance Apple A14 Bionic chip.

No, the internal storage of the iPhone 12 mini is not expandable. However, you can utilize cloud storage services like iCloud to manage your data.

You can transfer data using Apple's Quick Start feature, restoring from an iCloud backup, or restoring from a computer backup via iTunes/Finder.

First, ensure the device is charged by connecting it to a power source for at least 30 minutes. If it's still unresponsive, perform a force restart: quickly press and release the Volume Up button, then quickly press and release the Volume Down button, then press and hold the Side button until you see the Apple logo.

Try closing the problematic app by swiping up from the bottom of the screen and swiping the app card off the top. Reopen the app. If the issue persists, check the App Store for app updates and ensure your iOS is updated to the latest version. You can also try freeing up storage space.

Go to `Settings` > `Battery` to see which apps are consuming the most power. You can enable Low Power Mode (`Settings` > `Battery`), reduce screen brightness, turn off Background App Refresh for less critical apps, and limit location services to optimize battery life. Avoid extreme temperatures.

For Wi-Fi: Try toggling Wi-Fi off and on in Control Center or Settings. Forget the network (`Settings` > `Wi-Fi` > `i` icon > `Forget This Network`) and reconnect. For cellular data: Ensure cellular data is enabled (`Settings` > `Cellular`) and try toggling Airplane Mode on and off. If issues persist, restart your iPhone.

Ensure your face is clear of obstructions (masks, hats, glasses in some cases). Check that your face is within the frame and try resetting Face ID in `Settings` > `Face ID & Passcode` and setting it up again. Ensure your camera is clean and unobstructed.