https://devzone.nordicsemi.com/f/nordic-q-a/24427/android-devices-lose-bondingHi, we&#39;ve developed a custom board with nrf51 and use bonding and white listing. Everything works fine when connecting and bonding iOS phones with this devices but with Android things are a bit more difficult. Somehow after bonding certain Androiden-USTelligent Community 13Mon, 25 Sep 2017 14:55:46 GMThttps://devzone.nordicsemi.com/thread/96191?ContentTypeID=1Mon, 25 Sep 2017 14:55:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:32ab02ea-2a86-4fdb-af6d-6749993f9d90jemajuca<p>Hello Markus. Have you solved it? What package are you using for the android programming?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/96192?ContentTypeID=1Fri, 18 Aug 2017 10:48:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2518302c-6891-457a-87cb-fde14f98d01cAleksander Nowakowski<p>Hi, what Android version you have on those phones? Few years back we had this issue when after disconnecting a phone had to bond again, but since then we didn&#39;t see any bond issues, afaik. Does it happen randomly, or when you do something special? Do you still see this device as bonded in Android, but it does not resume encryption after connection or tries a wrong key?</p><div style="clear:both;"></div>