Here is a list of things you can try if you are having issues syncing or backing up data on your phone:

1. Check that your device is connected to the internet or the correct Wi-Fi network.
2. Make sure you have the latest version of your preferred app installed.
3. Restart both your device and your computer.
4. Check that your device has enough memory available.
5. Disable, then re-enable sync/backup options.