T-Mobile Outbound Calls

I've seen various people mention having issues with T-Mobile in the USA but I haven't been able to find the related issue and I haven't seen anyone point to it. I wanted to document what I have found so far and have a place to point others to when they have more information to share. If there is already an issue, I'd love to be able to share what I've found if more information is needed. https://gitlab.com/ubports/community-ports/pinephone/-/issues/120 appears related.

I have done some tests with my PinePhone CE on T-Mobile (USA) to an Android phone (Moto G6) on Republic Wireless (uses T-Mobile and Sprint networks and has wifi calling). There have been other calls on Version 2 which worked (received a call from Amazon, etc.), but I can't verify any device information on that side. The only other device I know for sure is a relatively new iPhone on ATT was able to call me.

PinePhone CE Stable Version 2

• Incoming calls work on 2G/3G/4G. Outbound calls do not work, fail outright with the dialer reporting "Call failed".
• I could not receive texts but my sent texts were received by others.

PinePhone CE Development Version 47

• Didn't test calls.
• Text messages in and out work.

PinePhone CE Development Version 48/49/50

• Incoming and outgoing calls make connection between two phones when on 2G and 2G/3G but I have no sound in or out, neither does the Moto G6.
• Incoming calls can reach my phone on 2G/3G/4G but outgoing calls fail outright.

PinePhone CE pmOS

• I attempted an install of pmOS but behavior is similar to 2G/3G; the calls connect but they do not share audio at all.

PinePhone CE Mobian

• Another user I am working with this issue on says that calls work in Mobian.

PinePhone CE PureOS

• Calls work as of the 20200616 image released by Clover.

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I'm seeing the same issue on T-Mobile's network using RedPocket Mobile.

There is a nationwide outage on T-Mobile's network that began today, but the issue with the PinePhone on T-Mobile's network has existed since last week.

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Somewhat related to #152.

Also confirming, outbound calls do not work (CE Edition)

Inbound calls working perfectly and SOMETIMES I can get a call out. But I've noticed it only happens around 12pm EST? At least that's what has been happening to me. Probably more factors at play but from personal experience it is pretty odd. This is with the newest June 28th build as well.

@darkialga Same problem here in the Netherland, i get a call failed message when calling. Although it seems to work after a reboot for a short period of time.

Same experience. text in out ok. no voice. incoming call rings, outgoing call fails.

Facing the same issue - outgoing calls are not working with UBPorts. Incoming and outgoing calls work with Mobian.

On my UBports CE, I have the same issue with both T-Mobile and Mint Mobile in US. I cannot make calls on either one but I can receive calls and also send and receive texts. For outbound calls, I get a "Failed" error. On the Mobian OS, I can send and receive calls and also send and receive texts on Mint Mobile.

mentioned in issue #274

added DistroBase: 16.04 label