Please try the following:
1. Check if your phone's storage space is full. If so, delete some data and try again.
2. Long-press Recorder on the phone and go to App Info> Storage & Cache. Clear the cache and storage space, and try again.
3. Uninstall any recently installed third-party program to rule out any third-party program compatibility problems.
4. Back up any important data and restore your phone to factory settings. Alternatively, download the latest software from the official NOTHING website to upgrade the phone.
If the issue persists, contact the Nothing Support Team for further assistance.