Good day,
Sorry to hear about your uncomfortable situation.
Keep in mind: if you see anything suspicious on your phone, you can screenshot it and ask your attorney if it's usable for your divorce proceedings along with an explanation/context. Although, it isn't concrete since anyone theoretically could have done it.
For example, you find a location tracking app.
You can see the install date:
settings > apps > see all apps > [tap on app] > scroll to the bottom
It has the install date here. You can also open the app to see if it is linked to a certain account or email.
FierceSnoodle without ever showing the Graphene logo.
No one could change this on your phone. It is either a diliberate change by the grapheneOS developers or a bug.
though I try to keep him from having physical contact
Have your pin/unlock method be something not obviously familiar to you: common number/phrase, birthdays, favorite number. So he can't guess it.
I no longer have the record button on phone calls
You probably had the default phone call app.
Check to see if it is not the same app:
hold your finger down on the app's icon > app info > scroll to the bottom
It should say: com.android.dialer
This is the technical, unique name of the app.
When you are on a call, where it has the buttons for: mute, keypad, speaker, hold, etc.
You can hold your finger down in that area then move your finger up/down to see if there are more buttons like "record call."
Preferably hold your finger down in a space inbetween buttons to avoid accidentally pushing something else but you don't have to.
I feel like apps will be open when I pick up my phone that I didn’t open but that could just be me accidentally doing it.
Very well could be but this could be paranoia from your partner's past phone abuse.
Document any bad behaviors by him for your lawyer. Have a good lockscreen password for all profiles, turn the screen off for your phone if you step away, and set the screen timeout to a good duration:
settings > display > screen timeout
My daughter and I tried to do the device diagnostics using my daughter’s Pixel Pro 9 but couldn’t get it to work.
This feature when it was first released tested to see if your screen works. I am not sure what else they added.
the auditor app
This will test if your grapheneOS operating system is corrupted or altered. You can set up remote tests to automatically check for you. It won't check if someone has a tracking app or fiddled around with the phone.
other advice
Here are some good places to check on your phone:
settings > apps > see all apps
Scroll through the list. See if there's anything strange. Ask and/or google if youre unsure.
If you find something, you can open the app by: selecting the app in the list > top right is a square with an arrow
Another good thing to check:
`settings > security & privacy > privacy dashboard
List of apps that have used permissions recently. You can see the time & date of apps using location.
Another spot:
settings > security & privacy > privacy controls > permission manager
Each category is a permission. Tap 1 like location to see every app with location permission. Verify if anything shouldn't be there.
Wishing you luck :)