Phone health check

Having trouble with your phone, tablet or accessory? A few quick checks could help you get things working again.

Follow the steps in the quick checks section or use our online troubleshooter for guided help based on the issue you’re having. If your device needs more support, we’ll point you in the right direction.

Before you arrange help, try these troubleshooting tips:

• Restart your device

  Turn your device off, wait a few seconds then turn it back on. This can clear temporary glitches and refresh your connection.

• Check for software updates

  Make sure your device software and apps are up to date. Updates often include fixes that help with performance, security and known bugs.

• Free up storage

  Low storage can slow your device down or stop apps working properly. Delete any apps, photos, videos or files you no longer need.

• Check your charger and cable

  If your device isn’t charging properly, try another compatible charger and cable from a reputable supplier. Avoid using damaged cables or chargers.

• Back up your device

  Save your contacts, photos, messages and files regularly. This helps keep your important stuff safe if your device ever needs to be repaired or replaced.

• Keep your device dry

  Moisture can damage your device, even if it’s described as water resistant. Try to keep it away from rain, steam and wet pockets. Water damage may not be covered by warranty.

• Keep your device away from extreme heat or cold

  Avoid leaving it somewhere very hot or cold, like on a radiator, in direct sunlight or in a car on a warm day. Extreme temperatures can affect battery life and performance.

• Remove anything you don’t need

  Old apps, unused widgets and too many background tasks can slow things down. Removing what you don’t use can help your device run better.

Need help with settings or features?

If you need step-by-step help with your device, our device guides can show you how to manage settings, set up features and use your phone or tablet.

Discover simple checks for common device problems, like:

• Battery or charging issues

• Signal, calls or mobile data problems

• WiFi or Bluetooth connection issues

• Screen, sound or camera problems

• Apps freezing or running slowly

Our troubleshooter can help you fix the issue yourself, and if your device needs a repair, replacement or more support, it’ll show you what to do next.

If the quick checks and troubleshooter don’t fix your issue, your device may need more support.

You can find out how repairs work, what to do before sending your device away and how to track a repair on our device repairs page.

You can pop in to an O2 store for general help and advice. Some issues may need to be checked using our online tools, handled by our support teams or sent for repair.

Find an O2 store

_{Last updated: 26/05/2026}