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[rocket2nfinity]

If PMOS is flashed to the eMMC the outcome is txt working, phone calls can come in, calls can go out, BUT I can't hear a call going out or can anyone hear me when a call is answered nor can I hear them.
So, as of now the only OS that seems to work with T-Mobile is PMOS or at least for my phone. I'm going to put random OS's on an SD card and see it the phone still works or works better. Then I think over the weekend, I'll flash every OS onto the phone and see if PMOS is the only one that works or semi-works with T-Mobile.
So, this might not be a hardware issue at all it all might be a T-Mobile issue + OS's, the only thing that is disturbing now is the hearing making and receiving phone calls.

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Just to narrow it down further - how old is your t-mobile sim card? Others have had to replace their sim card if it isn't fairly new, because of all the network changes as of late. It would be cheap to check that with one of the free trial sims from Mint or US Mobile and others.

And check to see if you physically have a cell signal wirh anorher device. Because, t-mobile has changed a lot, band and tower wise, post Sprint and 5g push.

I just replaced the SIM day before yesterday, because of this issue. It wasn't the SIM or is it . . . . . . . . .

If your verizon sim works, and two t-mobile sims do not, it's not the sims nor the hardware. It's the network. T-mobile has been making changes. That includes removing towers and bands in certain areas to accomodate 5g. You really should try some free trial or cheap sims with different networks.

What's your thoughts on my post above this one or below it,.

So, your sim does see the network. I was under the impression it didn't. The call audio issue  is known. The only OS I think has that solved is Mobian, and arch for a while. But do keep in mind, the various builds are alpha or beta at most. Things got broken recently to fix other things. Give it a little time for the Dev's to fix the fixes. Mobian for instance is undergoing a big update that will change a lot.

There is a thirteen-in-one OS build in the forums. You can try most of the available builds on one SD with it.