iPhone 5G+ connectivity issue after screen replacement and iOS upgrade
Little bit of a weird issue but on march 31 I got my screen replaced and they also upgraded my phone to IOS 18.4 and since then I noticed it right away on the drive home that my phone was not going to 5G+ anymore, I checked my other phone which was on 5G+ in the same location.
I went back to apple the next day and they told me that they ran diagnostics and everything came back fine and they said its just bad reception. I asked the apple tech what phone he has, carrier and ios of his phone. he has the same carrier, same iPhone but hes on ios 18.3.2 so not bad reception.
I tried to downgrade to ios 18.3.2 since its still signed my apple but it failed twice and I had to reset my phone (reset didn't fix the issue)
Can I get some help with how I should proceed? I tried my sim card in my old iPhone 12 and I've tried different carriers too. My phone is refusing to go to 5G+
[Re-Titled by Moderator]
iPhone 16 Pro Max, iOS 18