https://devzone.nordicsemi.com/f/nordic-q-a/18561/nrf52-s132-not-connecting-properlyHello, I am using the uart example with modifications to add SAADC and TWIS. It woked well for a while but now it does not connect properly to my iPhone. I reverted to the HRM example. That works but when I reload my application the device name &quot;Nordic_UARTen-USTelligent Community 13Tue, 27 Dec 2016 15:20:59 GMThttps://devzone.nordicsemi.com/thread/71641?ContentTypeID=1Tue, 27 Dec 2016 15:20:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f6d48257-6649-4e24-9700-d5a0092377a6Petter Myhre<p>Great! Yes, iOS can keep the connection at the system level.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71640?ContentTypeID=1Tue, 27 Dec 2016 15:17:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4762a0e9-342e-4bdf-8a5c-267592860277Claude<p>I fixed my problem, upgraded to SDK 12.2, yes there is also a cache problem on the iPhone app. In nrf Toolbox UART after a connection a &quot;back&quot; navigation disconnects on the iPhone but no GAP_DISCONNECT event on the nrf52, it thinks it is connected. A reset is needed.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71639?ContentTypeID=1Fri, 23 Dec 2016 12:13:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:90682f27-f0fd-4b5e-92c2-9396d67b8eabPetter Myhre<p>Sounds like a cache problem. Try:</p> <ul> <li>Turning off and on Bluetooth in Bluetooth Settings</li> <li>Forgetting known devices in Bluetooth Settings</li> <li>Restarting your iOS device</li> </ul><div style="clear:both;"></div>