OnePlus 7T Pro Stopped Working on 4G with Optus – Any Solutions?

SkyeLim on 31/10/2024 - 19:09
Last edited 31/10/2024 - 19:14

Hi everyone, I have an urgent question!

I'm using a OnePlus 7T Pro with Optus as my carrier, and since all networks have now shut down 3G, I assumed my phone would still work with 4G, as it always displayed a 4G connection. However, today it suddenly stopped working entirely—not only on Optus but also with Telstra SIM cards. I planned to keep using this phone until next year for certain reasons, so this issue is really unexpected.

Has anyone else experienced something similar, or does anyone know a solution? Would updating to custom firmware potentially fix this? I'd really appreciate any help.

Mobile Mobile Phone OnePlus Android

Comments

  • singingwolf on 31/10/2024 - 19:28
    +2

    I found a solution for mine. It involved a trip to Big W.

  • scrimshaw on 31/10/2024 - 19:30

    https://www.reddit.com/r/oneplus/comments/1gdr2e3/calling_al…

    the telco blocks your phone based on the IMEI number. There is no easy way to change the phone's IMEI, even with a custom firmware the IMEI number is basically permanent.

    You could try switching to Telstra and see if you can continue getting service

    • SkyeLim on 31/10/2024 - 20:13

      Thank you for your reply. I tried with Telstra SIM card but the same :(

      • CyberMurning on 01/11/2024 - 07:40

        Voda bro, voda… try try try borrow sim from friends

  • CyberMurning on 31/10/2024 - 19:33
    +1

    Nothing you can do except cry angry swear and then go buy new phone.
    Or..
    Move to live in different country…

  • CyberMurning on 31/10/2024 - 19:38

    How much did you buy this? Hopefully not over aud 1000, sad…

    • SkyeLim on 01/11/2024 - 04:17

      Yep. I paid around 700 luckily but anyway ;(

      • CyberMurning on 01/11/2024 - 07:39

        Thats good price if brand new in 2020. My google said rrp USD 900

  • bobokingdom on 31/10/2024 - 20:16
    +1

    Have you tried Vodafone?

    • CyberMurning on 31/10/2024 - 20:26

      Yep saw reddit about voda

  • GordonD on 31/10/2024 - 20:48

    Another person whose next phone won't be a OnePlus. If they have any sense.

  • ForbiddenCouponJutsu on 01/11/2024 - 12:02

    I've got a OnePlus 8T and same issue, it's because the phones might be able to use 4G/5G but they rely on 3G to make emergency calls. (this is something baked into the phone tiself at manufacturing)

    You can hack your phone to enable VoLTE and VoWi-Fi but unfortunately because the phones are hardcoded to use 3G for emergency calls, the telcos are blacklisting phones that can't make emergency calls over 4G/5G.

    Here's the legal direction specifically outlining that Telcos can terminate service to phones they can't make emergency calls.
    https://www.legislation.gov.au/F2024L01103/asmade/text

    FYI I did hack my phone to enable VoLTE/Wifi and it didn't help, service was still cut.

  • KoNpHuSeD on 04/11/2024 - 19:25

    OnePlus - Guide to enable VoLTE on AU Networks

    I successfully used this on my OnePlus 7T.

    https://forums.whirlpool.net.au/archive/9m01z7np

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