You had mentioned “Tolla” three times and this is you second post on it… Probably you meant “Tello Mobile”, a Mobile Virtual Network Operator on Sprint (now T-Mobile). Unlike with AT@T, I think we don’t know yet if T-Mobile will ban certain non-VoLTE phones models, let alone how it will force its MVNOs to follow its rules.
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You’re correct. Not sure why I had Tolla stuck in my head…probably some confluence of Jolla and Tello… Fixed it.
I’m running the paid version of X on an XA2 Ultra with Mint, works fine.
As of today, it still works with north american GSM carriers. This refers to what happens in October 2021 and the 1st quarter of 2022 when T-Mobile and ATT decomissions its 2G and 3G networks leaving Sailfish X (and all other non VoLTE) phones without a way to send/receive voice calls or SMS/MMS messages.
So far the TextFree over 4G data solution has worked, except for one annoyance: the other party can hear an echo of themselves due to speaker to microphone feedback unless you use the mute button like the transmit switch on a VHF radio.
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TextFree can work with a voice call?
Yes, but you only get 60 minutes of talk with the free version. With a $4.99 a month subscription, it’s free. See my previous post regarding the echoing issue. That’s a sailfish android compatibility layer problem, as it works fine on my tablet and android phone.
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So, Germany does it now (O2 latest end of this year) but (‘fortunately’ ?) they will keep 2G open.
Nevertheless this limits the usage of a Sailfish device as a daily driver! 
Please @Jolla…
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Oh… i hope I am able to make phone calls next month… 
I have Telekom and a backup Vodafone SIM, but both switch off 3G
@jolla: is there an official opinion on this topic or do I have to carry another device to make phone calls in the future?
2G will still be available, so yes, you still can make/receive calls. Thankfully, because otherwise I have to get smartphones for my parents and I really don’t want to do tech support for my dad… 
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Errr, 4g? 3G isn’t fundemental, is it? I don’t thinks calls, sms or even MMS are a problem in Germany (I’m an O2/telefonica client).
EDIT: Am I missing some info on some devices? Don’t all the Sailfish ‘approved’ device support LTE/4g? I’m always on LTE according the volla phone.
LTE they do support, but not calling over LTE, which is a whole different beast. Everytime you’re calling someone or get a call the mobile drops to 3 or 2G.
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Ok, which means no change from a practical perspective? Calls and SMS continue to work?
For us in Germany nothing will really change, until they decide to drop 2G alltogether and that may be a long time until then.
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Thanks! I was responding to the idea that we don’t have a daily driver anymore, which seems to not be the case. phwew. don’t panic.
But the 2G/3G/4G symbol stays displaying 4G on my X10 while talking…
Also I think a frequency change and connecting to another 2/3G base station if connected to 4G and a call comes in, would take too much time, or not? Is this the reason for, that a caller often has to wait few seconds until a ringtone comes?
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The problem is: 4G coverage is much better than 2G in many areas
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Is this the reason for, that a caller often has to wait few seconds until a ringtone comes?
I assumed it is and iirc some people higher in thread mentioned this.
Yup, we will lose out eventually if VoLTE isn’t supported.
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Um, well, probably one of us would step in the reverse engineer our way to forcing it into ofono and co. I’m not quite there, but given what mal and piggz, for instance, have done in other areas, I’ll commit. Jolla will, too.
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