https://devzone.nordicsemi.com/f/nordic-q-a/53255/ble-device-disconnect-from-ios-deviceHi, I hdd developed a ble product based on nRF52810 ( SDK_15.3.0_59ac345 s112 ). I had set the connect paramter like this: MIN_CONN_INTERVAL MSEC_TO_UNITS(150, UNIT_1_25_MS) MAX_CONN_INTERVAL MSEC_TO_UNITS(250, UNIT_1_25_MS) SLAVE_LATENCY 4 en-USTelligent Community 13Tue, 15 Oct 2019 17:23:28 GMThttps://devzone.nordicsemi.com/thread/215146?ContentTypeID=1Tue, 15 Oct 2019 17:23:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6ef71384-15ae-4c9a-8dde-ad4eb16ca971Kenneth<p>It may be difficult without an expensive on-air sniffer (e.g. Ellisys or Frontline), however you may get decent indication by just trying to increase the clock accuracy, e.g. try the worst case:&nbsp;<span>NRF_SDH_CLOCK_LF_ACCURACY&nbsp;to 1 for comparison?&nbsp;</span></p> <p><span>Kenneth</span></p><div style="clear:both;"></div>