Samsung Galaxy Tab A11 - 8.7" - 128 GB - Grey

Go to Settings > Software update and follow the on-screen instructions.

Press and hold the power button and volume down button simultaneously.

Go to Settings > General management > Reset > Factory data reset.

No, the model does not support expandable storage.

Battery life varies based on usage. The tablet has a 6000mAh battery capacity. Typically, you can get several hours of use on a single charge.

This model does not include a headphone jack.

The warranty period is typically one year from the date of purchase. Please consult your documentation.

Ensure the tablet is charged. If it still doesn't turn on, try pressing and holding the power button for an extended period (e.g., 30 seconds).

Check your Wi-Fi router and ensure the tablet is within range. Restart the tablet and router if necessary.

Close unnecessary apps, clear the cache, and ensure the tablet has enough storage space.

Update the apps from the Google Play Store or reinstall the app.