Catch BLE EVT 0x12https://devzone.nordicsemi.com/f/nordic-q-a/61817/catch-ble-evt-0x12Hi, Everything works perfect between my phone app and my nrf52832-chip except on some phone-modells. That is a Huawei P20 pro and a Samsung S8. My application is sending files (ca 1mB each) but on those two devices the app loses connection to the chipen-USTelligent Community 13Tue, 26 May 2020 14:00:55 GMTRE: Catch BLE EVT 0x12https://devzone.nordicsemi.com/thread/251739?ContentTypeID=1Tue, 26 May 2020 14:00:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d30b72c5-db8f-4162-b75c-caf39783d952awneil[quote userid="87618" url="~/f/nordic-q-a/61817/catch-ble-evt-0x12"]BLE EVT 0x12[/quote] <p>That&#39;s Connection Parameters Update:</p> <p><a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v11.0.0/ble_serialization_s130_events_gap.html#nrf51_evt_conn_param_update_encoding">https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v11.0.0/ble_serialization_s130_events_gap.html#nrf51_evt_conn_param_update_encoding</a></p> <p>BLE debugging tips:</p> <p><a href="https://www.argenox.com/library/bluetooth-low-energy/ultimate-guide-to-debugging-bluetooth-smart-ble-products/">https://www.argenox.com/library/bluetooth-low-energy/ultimate-guide-to-debugging-bluetooth-smart-ble-products/</a></p><div style="clear:both;"></div>