Here are some things you can try if your phone’s apps are opening and closing on their own:

1. Restart your phone – This may resolve the problem and prevent it from happening again.
2. Check for any available software updates – Outdated software can cause problems.
3. Wipe the cache partition on your device – This will remove any temporary files and help your device run smoothly.
4. Uninstall apps you don’t use – Too many apps running in the background can cause problems.
5. Move your apps to an External Storage Device – External Storage Devices can help the performance of your device.
6. Factory reset your phone – This will delete all data on your device, including apps, settings, and personal data.