https://devzone.nordicsemi.com/f/nordic-q-a/47501/how-to-reject-bonding-with-mobileHello, I studied on example\ble_peripheral\ble_app_ancs_c in SDK15.2.0 with board PCA10040. After paring and bonding sucessfully with my iPhone, I reset PCA10040 with Button 1 pressing in order to erase the bond infomation, and i saw it worked as expecteden-USTelligent Community 13Tue, 21 May 2019 11:53:51 GMThttps://devzone.nordicsemi.com/thread/188234?ContentTypeID=1Tue, 21 May 2019 11:53:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:124df035-7a38-4de5-8ff3-f305bb62a727run_ar<p>Unfortunately, it is not possible to know if the iPhone has the old bond or not, until after it has connected and tried to re-establish the old bond. And even if you created a check on the connection event, I am not sure how you would know that the connection was made by a previously bonded device. iOS uses a resolvable private address, so the address changes every 15 minutes or so.</p><div style="clear:both;"></div>