this post was submitted on 13 May 2024
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So tech question Tuesday.... You know this 3g turn off thing? My MIL has a Moto G8 plus (which the specs say supports LTE), but Optus keep sending her emails through her account saying that it will not be supported going forward ... They list her phone specifically as one that will not be supported...so VoLTE is a different spec than LTE?
@calhoon2005 @Seagoon_ Sort of.
Basically, when the first 4G and 4G LTE networks were first being rolled out, the technology to make voice calls over 4G networks wasn't quite ready yet. So the earliest 4G phones dropped back to 3G for calls, but used faster 4G networks for internet and data.
Eventually, the telcos rolled out a technology upgrade that allowed calls to be made on 4G LTE mobile networks, called VoLTE (voice over LTE).
But it only worked on newer 4G/4G LTE phones that supported VoLTE for calls. Older models still dropped back to 3G for voice calls
Sounds to me like your MIL has an older 4G LTE phone that still falls back to 3G for calls, instead of making them over the 4G LTE network.
If that's the case, she'll no longer be able to make calls with that phone once Optus 3G shuts down.
Time for an upgrade.
That is very clear. Thanks