• rcbrk
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    4 months ago

    Some 4G phones don’t support 4G calling correctly or with all networks.

    Check whether your phone actually uses 4G (VoLTE) for calls – to sort-of test this, make a call while connected to mobile data and note whether the signal meter’s 4G indication drops to 3G(H+/HSPA) or something during the call.

    A more insidious version of this issue is that some phones do VoLTE just fine, but only use 3G for 000 calls.

    Some phones only support VoLTE with some networks. There’s a chance that an appropriate firmware upgrade could add support for some network/device combos.

    • vividspecter@lemm.ee
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      4 months ago

      I’ll add that some Xiaomi phones need a dialer code in order to enable VoLTE support. It’s only with the stock OS (custom ROMs shouldn’t be affected).

    • SLfgb@feddit.nl
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      4 months ago

      Yep, this is me. Bought 1 yr vodafone prepaid, after getting reminded to enable VoLTE on my phone (a 2019 model), which I did. But, the phone doesn’t actually do VoLTE calls, so come Vodafone’s 3g shutdown weeks later I suddenly could no longer make or receive ANY phone calls. Internet/data works fine.

      Ended up getting a cheap new phone just so I can make phone calls in an emergency.

    • Ferdi Magellan@aus.social
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      4 months ago

      @rcbrk

      iPhone 11pro.

      I know a few people being bombarded with messages from Telstra and Optus. The Telstra message interrupts every time they make a call. No one is planning on buying a new phone.

      The telcos need to explain to people why their phones won’t work. I walk into a shop, they tell me my phone is fine. I ring Optus they tell me it isn’t. 🤷🏽