Verizon, AT&T or T-Mobile? And which modem is best for them?

Hardware Librem 5
63

I’m surprised they didn’t mention that possibility in my communication with them . They simply told me " We do not have any cellular baseband modems with voice capability . " When I inquired about a specific modem and then asked if any of their baseband cards had voice at all .

That’s good news . I’m glad several companies are taking notice of this emerging technology and are building their own tech to compliment .

I’ll probably just sell the broadmobi BM818-A1 on ebay down the road when an american manufacturer creates a similar product.

64

i’d be ok with the price knowing it’s more compatible with the major networks

65

AT&T Services are member of:
https://www.globalcertificationforum.org/membership/operator-membership/operator-members-list.html

And Quectel EM06-A is GCF certified on 15-May-2019:
https://www.globalcertificationforum.org/pub_product/8010.html

I hope this helps. This is just informational (without confirming anything).

66

Pure Talk (which uses the AT&T network) sims work with the Librem 5. Calls, text messaging, data, and MMS/SMS all work. When you call to activate with a Customer Service Rep, they will ask for the IMEI from the modem and tell you that the phone isn’t compatible. IT WILL WORK!

You will have to contact Purism support to enable VoLTE and MMS/SMS. They will email you a site where you can download the script to run in the terminal that will produce an app on the phone to enable VoLTE. As for MMS/SMS, that can be enabled from the settings within the Chat app.

67

Hello. I wanted to update this post that PureTalk does not make calls on the Librem 5, at this time. The representative at PureTalk told me that the IMEI didn’t say whether or not it was compatible. I was on hold with “technical services” for over 30 minutes today before I gave up.

I am going to try again later, but it is not looking promising.

1 Like
68

Did you ever get this working again?

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69

Hello. I switched to AweSIM. It is the only service that has worked for me at my home and elsewhere, consistently.

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70

If you can find a good soft phone client that will run in Linux ARM64, you don’t need any voice-capable modem on your Librem 5. If the SIM card has only data, you can still make and receive phone calls via a voip account. I have this working on my Android phone using an app called Voiper. But it won’t do text messaging. I was unable to find a soft phone App that runs in ARM64 Linux.

I also got my Librem 5 phone dialer to make voip calls. But the call audio was extremely terrible.

1 Like
71

The default calls app does this, you just add the SIP account and it just works for making and receiving calls.

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72

Is it really working well now? When I tried it, I had to set up an outdated codec in my voip account to get it to work. A thread in this forum acknowledged at the time that one of the experts at Purism couldn’t get it working well either as they had to load and use that same crappy codec also, as the only way to make it work.

2 Likes
73

I didn’t have to do anything special with my SIP provider, just creds and go.

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74

Who is your SIP provider?

1 Like