Very weak network on FP3 (4.1.1)

EDIT: after many tries, I let down for a few hours and both SIM cards came back spontaneously. No clue how.

Hello,

Since a few days ago, my phone is on Edge or has no network, even in places where it’s usually in 4G. I saw H once, for 1 second or less.

SMS send / arrive with a lot of delay, if at all.

Phone calls fail to reach a tone, unless they’re blocked immediately. Incoming calls go to voicemail directly.

Of note: I have 2 SIMS at 2 different providers, and they’re both impacted.

I’ve seen posts about 4.1.1 causing some network issues (not quite the same, though), and I did update very recently, so it may be tied. There were no other recent changes.

I tried inputting APN manually. There weren’t any slots for MNC or MCC parameters on my screen, but tried anyways. It didn’t work.

I looked at the antenna: it’s looking good, just the tiniest bit faded.

I followed several tutorials for settings. No luck.

Does anyone have a clue for a next step?

Thank you in advance!

Florence

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