: One of the most common "soft" causes is an out-of-sync trophy database.
Follow these troubleshooting steps in order, starting from the easiest and least invasive methods. 1. Rebuild the PS Vita Database
If you’ve tried all these steps and still see the error, your PS Vita may have reached the end of its hardware life. Consider salvaging the battery and screen for parts, or upgrading to a PS Vita 2000 (which has slightly more reliable internal components).
The simplest solution is to restart your PS Vita. This may seem obvious, but it's often effective in resolving the issue.
If you are using an SD2Vita adapter, the issue is likely due to the micro SD card not being read properly.
Numerous users across forums have successfully fixed the C1-2738-0 error using this exact method.
Once in, you can remove the card, run VitaShell , and attempt to fix or delete the buggy application, or run a database rebuild through Safe Mode. Method 3: Rebuilding the Database