https://devzone.nordicsemi.com/f/nordic-q-a/3590/ble_app_ancs-not-receiving-notifications-after-power-cycle-helpI&#39;m able to flash ble_app_ancs to the nrf51822, and I&#39;m able to debug it successfully. I&#39;m also able to pair with my iPhone 5S running iOS 7.1. After the initial pairing, I am able to receive notifications from my iPhone. As new notifications come inen-USTelligent Community 13Wed, 27 Aug 2014 15:53:19 GMThttps://devzone.nordicsemi.com/thread/13025?ContentTypeID=1Wed, 27 Aug 2014 15:53:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1d1af400-af84-40b6-9f9c-4fefc086fd39pteracuda<p>This is bizarre. If I build the project via gcc on my Mac, then I get the behavior I described where notifications only come across after initial pairing. After power-cycling the nrf51822, the device reconnects to my iPhone, but no notifications are received. If I build the exact same (untouched) example via Keil 4 on Windows 7, then I&#39;m able to receive notifications after power cycling as you described.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/13024?ContentTypeID=1Wed, 27 Aug 2014 05:53:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b6d71c0-9190-4f21-8dd6-bf8c564e9deaTakatoshi Nao<p>It works for me after power off and on nrf51822. I didn&#39;t change anything. Did you try to unpair from iphone? You can unpair from settings&gt;bluetooth.</p><div style="clear:both;"></div>