https://devzone.nordicsemi.com/f/nordic-q-a/64202/rf52-example-examples-ble_peripheral-ble_app_uartHi, I am using the example above on a PCA10056 development board with nRF5_SDK_15.2.0_9412b96. No changes have been made to the example code. After 3 minutes approx, the code ends up in app_error_fault_handler. The stack trace shows: ble_advertising_starten-USTelligent Community 13Wed, 29 Jul 2020 07:55:49 GMThttps://devzone.nordicsemi.com/thread/262115?ContentTypeID=1Wed, 29 Jul 2020 07:55:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab5c7004-7d5d-46d5-874a-593be185c915Vidar Berg<p>Hello,</p> <p>This example is configured to enter System OFF mode (i.e. deep sleep) when advertising times out after three minutes, and the chip can&#39;t go into sleep mode while in debug mode so that is why the program ends up in the error handler instead.</p> <p>To disable the adv timeout you can set the APP_ADV_DURATION to &#39;0&#39; (or BLE_GAP_ADV_TIMEOUT_GENERAL_UNLIMITED) and change the advertisement flags from BLE_GAP_ADV_FLAGS_LE_ONLY<strong>_LIMITED_</strong>DISC_MODE to BLE_GAP_ADV_FLAGS_LE_ONLY<strong>_GENERAL_</strong>DISC_MODE.</p> [quote user=""]Why does the&nbsp;<span>example end up in a fault condition when a mobile phone HAS connected?</span>[/quote] <p>&nbsp;Does it enter the fault handler while connected?</p><div style="clear:both;"></div>