https://devzone.nordicsemi.com/f/nordic-q-a/17859/bonding-issue-while-using-ble_app_bps-in-ble_peripheralWhen softdevice S110 is used then bonding is not occuring (via nrf connect app to nrf51).but both devices get bonded when s130 is used?In Nrf connect app key matching failed is coming please forward details regarding this problemen-USTelligent Community 13Mon, 21 Nov 2016 16:02:05 GMThttps://devzone.nordicsemi.com/thread/68841?ContentTypeID=1Mon, 21 Nov 2016 16:02:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d375968c-36ed-4df4-b44a-723fede66404FormerMember<p>To find the reason for the problem some debugging information is needed:</p> <ul> <li>Did you remember to delete the bonding information in nRF Connect before connecting &amp; bonding to nRF51(S110)?</li> <li>Could you capture a sniffer log showing what is being transferred over the air?</li> </ul><div style="clear:both;"></div>