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Same bluetooth address on all nexus 5 devices

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    • U Offline
      Ub
      last edited by 2 Jun 2022, 21:57

      Hello everyone,
      I have bought 2 nexus 5 phones, and after meeting issues with Bluetooth, I was really surprised when I found out that the phones have the same bluetooth mac address, as well as the nexus 5 of someone I know (with UT too).

      Only one of my phones has a working bluetooth though, the other one can't see devices except 2 "unknown" devices. I tried rebooting, turning on and off bluetooth and wifi... no result.

      Besides fixing bluetooth, I need to know an important thing : Is it possible to change the bluetooth mac address ?
      I tried to change the content of /persist/bluetooth/.bdaddr but no result, it's encrypted btw.
      I'm really confused, a broken bluetooth on one device is a problem, but having similar addresses on a bunch of devices is another problem...

      K 1 Reply Last reply 2 Jun 2022, 22:23 Reply Quote 0
      • K Offline
        Keneda @Ub
        last edited by 2 Jun 2022, 22:23

        @ub
        What is this mac address, so that i look at my N5 if i also have the same ?

        2015-2023 : Meizu MX4 ☠️⚰️✝️
        2023-2024 : Nexus 5 ☠️⚰️✝️
        2024-***** : FPOS Fairphone 5 waiting UT for freedom 😉
        🇲🇫🇬🇧

        U 1 Reply Last reply 2 Jun 2022, 22:48 Reply Quote 0
        • U Offline
          Ub @Keneda
          last edited by 2 Jun 2022, 22:48

          @keneda It's 43:39:00:07:1F:AC

          K K 2 Replies Last reply 3 Jun 2022, 03:37 Reply Quote 0
          • K Offline
            kugiigi @Ub
            last edited by 3 Jun 2022, 03:37

            @ub Same for my 2 Nexus 5. I guess someone decided to hardcode that XD

            U 1 Reply Last reply 3 Jun 2022, 07:32 Reply Quote 0
            • U Offline
              Ub @kugiigi
              last edited by 3 Jun 2022, 07:32

              @kugiigi That's really strange. But I'm wondering if the address is still the same on android. I would need to restore android to check it. But as far as I know, it's a physical address, then the OS doesn't matter.

              A 1 Reply Last reply 4 Jun 2022, 10:17 Reply Quote 0
              • K Offline
                Keneda @Ub
                last edited by Keneda 6 Mar 2022, 08:00 3 Jun 2022, 07:58

                @ub @kugiigi wow, so we just really all have the same BT mac address on our N5, just checked and same here !

                2015-2023 : Meizu MX4 ☠️⚰️✝️
                2023-2024 : Nexus 5 ☠️⚰️✝️
                2024-***** : FPOS Fairphone 5 waiting UT for freedom 😉
                🇲🇫🇬🇧

                C 1 Reply Last reply 3 Jun 2022, 17:29 Reply Quote 0
                • C Offline
                  cliffcoggin @Keneda
                  last edited by 3 Jun 2022, 17:29

                  @keneda Me too, though Bluetooth is not something I use.

                  1 Reply Last reply Reply Quote 0
                  • A Offline
                    AppLee @Ub
                    last edited by 4 Jun 2022, 10:17

                    @ub
                    A MAC address is not hardcoded in silicon.
                    Have you heard of mac spoofing? https://en.wikipedia.org/wiki/MAC_spoofing
                    It's an attack method used to usurp a legitimate device's identity (MAC address)...
                    mac spoofing is also necessary for a VM where a single physical device has many virtual ones to differentiate them we need to change their mac address.

                    So yeah probably hardcoded in the N5's port.

                    1 Reply Last reply Reply Quote 0
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