Hi and welcome to the forum.
Your problem isn’t something I have seen or heard of, have you searched the forum?
A few things to consider.
- Clear the caches and storage of as many apps as you can.
- Ensure if you have an SD card that it is formatted as Portable ~ you will see an eject icon via Settings > Storage. If not search the forum and see
- Generally check how much memory you have on the internal, even 6GB is low
- Ensure you have emptied the images bin
- You can also check how much RAM is being used, another factor in ‘freezes’
- Try using in safe mode for a while to see if that removes the problem which may indicate a custom app interference.
https://support.fairphone.com/hc/en-us/articles/360048843571
You say the system is up to date but that’s not really any help, which OS are you using and can you state the update version.
- Which launcher do you use for the GUI, is it the default with the Google search bar at the bottom.