NRF52832 pair

[HeWenJun]

hello,When the device's pairing record is lost, the phone's is in.stack report PM_CONN_SEC_ERROR_PIN_OR_KEY_MISSING 
What should I do?
NEF52832,SDK15.2.0,S132

[Hung Bui]

Hi, 

Please correct if I'm wrong. The issue is when you lose the bonding information on the nRF52, and still have bonding on the phone? 

If it's the case, the only solution is to remove the bond information on the Phone manually. It's about security reason, the phone wouldn't accept to create a new bond.  
Another option is to change to a new BLE address, so that the phone sees the device as a new device.