Chosen Solution
I got my phone’s lightning port replaced and now I have terrible cell reception when I’m outside and no signal at all at home
Hi Quinn. The iPhone SE 2020 has two network antenna cables that connect to the logic board. One of these antennae is housed in the replacement flex cable that is used to replace a lighting port. It is possible that this cable is damaged, defective, or not properly connected to the logic board during the repair. Check out Step 27 of this guide. If you did the repair yourself, I would make sure the connection is solid and the flex cable is not torn. If you took your phone somewhere to get the port replaced, I would return there to get it check out and fixed again! Alex
