Hi Brian,
VoLTE support is somewhat carrier customized (unfortunately).
I have been going through this issue too. I found that the Fairphone 5,
for example is reported to work on Optus and Vodaphone with VoLTE, but
reportedly not working with Telstra. See:
https://forum.fairphone.com/t/3g-network-closure-australia/109696
My phone (Samsung A21s) had Android 10 on it, but VoLTE was not working
with the particular Android 10 patch level I had on my phone, but I know
others with the same phone and earlier patch levels of Android 10 that
were working with VoLTE (so presumably my patch level had a bug added !)
... however, I was also reading that there was a major security
vulnerability with VoLTE that was only patched in early 2023 by Samsung,
see:
https://www.sammobile.com/news/galaxy-phones-risk-bug-exynos-chip/
So, on that basis, updating to the latest Android patch (if your phone
is vulnerable - and has been patched for that security issue) would be
worth doing - that's what I did and VoLTE seems to be working ok now.
Some discussion on this topic here too:
https://forums.whirlpool.net.au/archive/90x15pnq
More details from Telstra on older 4G phones that do work with VoLTE
https://www.telstra.com.au/support/mobiles-devices/enable-volte-mobile-phone
If you are on the Telstra network, you can check if your phone supports
VoLTE by sending an SMS:
https://www.telstra.com.au/exchange/3gxt-3g-closure-sms
HTH
Andrew
On 29/09/2024 5:42 pm, Brian May via luv-main wrote:
According to this video:
https://www.youtube.com/watch?v=RPlTz-3estM
Voice over LTE, required for voice over 4G or 5G, is not a standard. In
Australia, Optus and Vodophone implement one standard, while Telstra
implement another proprietary standard. Which means phones cannot make
voice calls on the Telstra network without proprietary software.
Supposedly this means it is not possible to have a phone running open
source software that supports phone calls on Telstra 4G/5G after the 3G
shutdown.
Is there any truth in this?
--
Thanks
Andrew
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