UBports Robot Logo UBports Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Register
    • Login

    Dual-SIM + OTA-20 on Mi A2

    Scheduled Pinned Locked Moved Solved Xiaomi Mi A2
    28 Posts 8 Posters 4.6k Views 1 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
      Reply
      • Reply as topic
      Log in to reply
      This topic has been deleted. Only users with topic management privileges can see it.
      • messayistoM Offline
        messayisto @PhAndersson
        last edited by

        @phandersson can't confirm. Running two SIMs from different careers without problems.

        ? 1 Reply Last reply Reply Quote 1
        • ? Offline
          A Former User @messayisto
          last edited by

          I also have OTA-20 with 2 SIM slots to run on Merlin. I have had another problem with calling for two or three days. There is a network but there is no network in the call part. I'll reset the entire system, it works best.

          Bildschirmfoto zu 2021-12-17 22-36-04.png

          1 Reply Last reply Reply Quote 1
          • M Offline
            magnargj @PhAndersson
            last edited by

            @phandersson hi, I moved it back to check, but it still doesn't work in slot nr. 1...

            Volla 22, Xiaomi Mi A2, Nexus5 (backup)

            ? 1 Reply Last reply Reply Quote 0
            • ? Offline
              A Former User @magnargj
              last edited by A Former User

              I cleaned my sim cards today with a cotton swab and alcohol. So far everything is working but I deleted everything. What else you can do is rename the sim slots to both sim 1. Or do you also have a defect in the other slot? Sometimes the fault is somewhere else. But if you can use at least 1 slot it's ok.

              1 Reply Last reply Reply Quote 0
              • P PhAndersson marked this topic as a question on
              • P Offline
                PhAndersson
                last edited by

                Many thanks to all those who commented.

                I'll apply OTA-20 in the coming days and report back.

                Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                1 Reply Last reply Reply Quote 1
                • P Offline
                  PhAndersson
                  last edited by PhAndersson

                  Just upgraded to OTA-20: the upgrade process itself went flawlessly, but the SIM card in slot #1 is no longer detected!

                  • during startup, I'm prompted for only one PIN code (the prompt no longer identifies the SIM, but the code only matches SIM #2)
                  • in "settings | mobile", only one SIM and matching operator is listed (the one for SIM #2)
                  • same thing in the top-of-screen quick access bar
                  • "setting | about" reports OTA-20

                  Is there any information I could collect on the phone to help troubleshoot this?

                  Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                  Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                  ? c4pp4C 2 Replies Last reply Reply Quote 1
                  • ? Offline
                    A Former User @PhAndersson
                    last edited by A Former User

                    @phandersson https://devices.ubuntu-touch.io/device/jasmine-sprout/

                    Which Android did you install back then? It says something about Android 9 in the device link. I don't know for sure as I have Xiaomi Redmi Note 9. But even here I had to downgrade to Android 10, because I also had problems with the SIM card at the beginning. I would have tried to reset the system to factory settings after the update. If that doesn't help, test the available channels for the software. Sometimes it also helps to gently clean the SIM card with alcohol. Or simply switch flight mode on and off or reboot several times. Otherwise, wait and see what others say.

                    P 1 Reply Last reply Reply Quote 1
                    • R Offline
                      rosenfeldpj @PhAndersson
                      last edited by

                      @phandersson I have MiA2 with OTA 20 with 2 SIMS and it works for me. Available for more questions.

                      ? P 2 Replies Last reply Reply Quote 1
                      • ? Offline
                        A Former User @rosenfeldpj
                        last edited by

                        @rosenfeldpj It's nice if your device works now. Good luck for the future.

                        1 Reply Last reply Reply Quote 0
                        • P Offline
                          PhAndersson @Guest
                          last edited by

                          @dpitti The device initially came with Android 8.1, but I flashed it with v9 as recommended before proceeding with the UT installation.

                          Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                          Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                          1 Reply Last reply Reply Quote 1
                          • P Offline
                            PhAndersson @rosenfeldpj
                            last edited by

                            @rosenfeldpj Many thanks for your offer. It's already a relief to know that a solution most likely exists.

                            I found out 2 ways to start investigating this issue.

                            1./ firmware versions
                            In a recent post (https://forums.ubports.com/topic/6813/unable-to-turn-on-bluetooth-on-mi-a2/29), @nauvpp mentioned upgrading the bluetooth firmware on his device from an archive bundle called firmware_jasmine_sprout_V11.0.28.0.zip. I've downloaded that ZIP and looked at its contents, but how can I check whether any of the .img files contained within are more recent than the ones already on the phone?

                            2./ 'dmesg' output
                            I collected the dmesg output after the upgrade (unfortunately, I don't have any example dating back before the upgrade, so I can't compare).

                            In there, searching for the "radio" keyword, I see the following messages:

                            [    5.226487] init: Received control message 'interface_start' for 'android.hardware.radio@1.0::IRadio/slot2' from pid: 28 (/system/bin/hwservicemanager)
                            [    5.226518] init: Could not find service hosting interface android.hardware.radio@1.0::IRadio/slot2
                            [    5.226602] init: Command 'exec_start update_verifier_nonencrypted' action=late-fs (/init.rc:390) took 0ms and failed: Service not found
                            [    5.226747] init: Received control message 'interface_start' for 'android.hardware.radio@1.1::IRadio/slot2' from pid: 28 (/system/bin/hwservicemanager)
                            [    5.226763] init: Could not find service hosting interface android.hardware.radio@1.1::IRadio/slot2
                            [    5.226861] init: processing action (post-fs-data) from (/init.rc:392)
                            [    5.227228] init: Received control message 'interface_start' for 'android.hardware.radio@1.2::IRadio/slot2' from pid: 28 (/system/bin/hwservicemanager)
                            [    5.227257] init: Could not find service hosting interface android.hardware.radio@1.2::IRadio/slot2
                            [...]
                            [   13.012729] init: Received control message 'interface_start' for 'android.hardware.radio.deprecated@1.0::IOemHook/slot2' from pid: 28 (/system/bin/hwservicemanager)
                            [   13.012794] init: Could not find service hosting interface android.hardware.radio.deprecated@1.0::IOemHook/slot2
                            

                            The first message block repeats 3 times. The second block occurs only that one time. But is this relevant?

                            Coming back to my "firmware" line of thought, I see a lot of firmware modules being loaded (often with some hint about their version), but do you have any idea which one I should be looking for?

                            Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                            Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                            1 Reply Last reply Reply Quote 0
                            • P Offline
                              PhAndersson
                              last edited by

                              Further debugging info. Here is a list of all the firmware modules and associated devices being loaded (or whose load is attempted) by the kernel:

                              cc00000.qcom,vidc:firmware_cb
                              dbmd4_va_fw.bin
                              dbmd4_va_preboot_fw.bin
                              
                              adsp.mdt (/devices/soc/15700000.qcom,lpass/firmware/adsp.mdt)
                              adsp.b02 -> adsp.b23 (/devices/soc/15700000.qcom,lpass/firmware/adsp.b02 -> ...)
                              
                              a530_pm4.fw (/devices/soc/5000000.qcom,kgsl-3d0/kgsl/kgsl-3d0/a530_pm4.fw)
                              a530_pfp.fw (/devices/soc/5000000.qcom,kgsl-3d0/kgsl/kgsl-3d0/a530_pfp.fw)
                              a512_zap.mdt (/devices/soc/soc:qcom,kgsl-hyp/firmware/a512_zap.mdt)
                              a512_zap.b02 (/devices/soc/soc:qcom,kgsl-hyp/firmware/a512_zap.b02)
                              
                              cdsp.mdt (/devices/soc/1a300000.qcom,turing/firmware/cdsp.mdt)
                              cdsp.b02 -> cdsp.b07 (/devices/soc/1a300000.qcom,turing/firmware/cdsp.b02 -> ...)
                              
                              cmnlib64.mdt (/devices/virtual/qseecom/qseecom/cmnlib64.mdt)
                              modem.mdt (/devices/soc/4080000.qcom,mss/firmware/modem.mdt)
                              cmnlib64.b00 -> cmnlib64.b06 (/devices/virtual/qseecom/qseecom/cmnlib64.b00 -> ...)
                              
                              mba.mbn (/devices/soc/4080000.qcom,mss/firmware/mba.mbn)
                              msadp (/devices/soc/4080000.qcom,mss/firmware/msadp)
                              modem.b02 -> modem.b28 (/devices/soc/4080000.qcom,mss/firmware/modem.b02 -> ...)
                              
                              tas2557_uCDSP.bin (/devices/soc/c1b6000.i2c/i2c-6/6-004c/firmware/tas2557_uCDSP.bin)
                              wlan/qca_cld/WCNSS_qcom_cfg.ini (/devices/soc/18800000.qcom,icnss/firmware/wlan!qca_cld!WCNSS_qcom_cfg.ini)
                              wlan/qca_cld/wlan_mac.bin (/devices/soc/18800000.qcom,icnss/firmware/wlan!qca_cld!wlan_mac.bin)
                              cpp_firmware_v1_12_0.fw (/devices/soc/ca04000.qcom,cpp/firmware/cpp_firmware_v1_12_0.fw)
                              venus.mdt (/devices/soc/cce0000.qcom,venus/firmware/venus.mdt)
                              venus.b02 -> venus.b04 (/devices/soc/cce0000.qcom,venus/firmware/venus.b02 -> ...)
                              

                              Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                              Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                              1 Reply Last reply Reply Quote 0
                              • c4pp4C Offline
                                c4pp4 @PhAndersson
                                last edited by

                                @phandersson said in Dual-SIM + OTA-20 on Mi A2:

                                Just upgraded to OTA-20: the upgrade process itself went flawlessly, but the SIM card in slot #1 is no longer detected!

                                Hi, I faced the same problem. I remember it was upgraded via delta, not full image. After full image "re-upgrade" two sims appeared in my case.

                                You can try this: Through the settings change channel to devel, close settings, start settings again, there should be devel upgrade available, don't upgrade and change channel back to stable and close settings again, now when you start settings there should be stable upgrade available - full image (cca 500 MB). Do the upgrade and you will see.

                                P 1 Reply Last reply Reply Quote 0
                                • P Offline
                                  PhAndersson @c4pp4
                                  last edited by

                                  @c4pp4 I tried to follow the procedure you suggested, but without success so far.

                                  Right after switching to the "dev" channel, the phone downloaded a 500MB installation image (which I didn't actually install, obviously), but once I returned to the stable channel, nothing more happened. It still shows the dev image ready for install, but nothing new for the already installed system (see attached screenshot).

                                  screenshot20211222_154432281_cropped.png

                                  Likewise in "About | Check for updates" -- it checks, then shows the exact same thing.

                                  Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                                  Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                                  LakotaubpL 1 Reply Last reply Reply Quote 0
                                  • LakotaubpL Offline
                                    Lakotaubp @PhAndersson
                                    last edited by

                                    @phandersson If you are on OTA20 yoh will not get a new stable version until the next OTA is ready. You could try installing the dev download, see if two sims show then change straight back to the stable channel and see if they remain.

                                    c4pp4C P 2 Replies Last reply Reply Quote 0
                                    • c4pp4C Offline
                                      c4pp4 @Lakotaubp
                                      last edited by

                                      @lakotaubp said in Dual-SIM + OTA-20 on Mi A2:

                                      If you are on OTA20 yoh will not get a new stable version until the next OTA is ready.

                                      I disagree, the procedure I described works in my case - Xperia X and Mi A2.

                                      @PhAndersson
                                      If you are unlucky with it, do what @Lakotaubp said.

                                      1 Reply Last reply Reply Quote 0
                                      • P Offline
                                        PhAndersson @Lakotaubp
                                        last edited by

                                        @lakotaubp Following your suggestion, I just switched to "dev" channel and installed the image (ver. 763).

                                        I'm happy to report that this restored access to both SIM slots -- see screenshot below:

                                        screenshot20211222_174645799_cropped.png

                                        I'll now switch back to the stable channel and report again.

                                        Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                                        Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                                        1 Reply Last reply Reply Quote 0
                                        • P Offline
                                          PhAndersson
                                          last edited by

                                          Well, I can select the stable channel again, but nothing happens: the updater doesn't detect anything to download (even after closing and restarting the "Settings" app).

                                          Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                                          Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                                          LakotaubpL 1 Reply Last reply Reply Quote 0
                                          • LakotaubpL Offline
                                            Lakotaubp @PhAndersson
                                            last edited by

                                            @phandersson Try a complete shutdown and reboot of the phone sometimes this does play up.

                                            P 1 Reply Last reply Reply Quote 0
                                            • P Offline
                                              PhAndersson @Lakotaubp
                                              last edited by

                                              @lakotaubp Same behaviour after power cycle.

                                              What's strange is that after switching back to the stable channel, the main "Settings" screen shows 1 update available (see screenshot below):

                                              screenshot20211222_201303889_cropped.png

                                              But when tapping on that line, and after "checking for updates", it still returns "Software is up to date".

                                              Xiaomi Mi A2 (16.04 OTA-25/stable) with 2 SIMs
                                              Daily driver: Google Pixel 3a (20.04 OTA-8/stable) [was: Nokia N900 (Maemo) from 2009].

                                              LakotaubpL 1 Reply Last reply Reply Quote 0
                                              • First post
                                                Last post