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    Same bluetooth address on all nexus 5 devices

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      • U Offline
        Ub
        last edited by

        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...

        KenedaK 1 Reply Last reply Reply Quote 0
        • KenedaK Offline
          Keneda @Ub
          last edited by

          @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 Reply Quote 0
          • U Offline
            Ub @Keneda
            last edited by

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

            K KenedaK 2 Replies Last reply Reply Quote 0
            • K Offline
              kugiigi @Ub
              last edited by

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

              U 1 Reply Last reply Reply Quote 0
              • U Offline
                Ub @kugiigi
                last edited by

                @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.

                AppLeeA 1 Reply Last reply Reply Quote 0
                • KenedaK Offline
                  Keneda @Ub
                  last edited by Keneda

                  @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 Reply Quote 0
                  • C Offline
                    cliffcoggin @Keneda
                    last edited by

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

                    1 Reply Last reply Reply Quote 0
                    • AppLeeA Offline
                      AppLee @Ub
                      last edited by

                      @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.

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