https://devzone.nordicsemi.com/f/nordic-q-a/15721/device-disconnect-when-connection-update-failedHi I&#39;m doing one project that is taking data from uart and send to mobile app. I&#39;m facing one issue that is when I connected to peripheral it connected and take data from uart and send to mobile app successfully after some time peripheral get disconnectingen-USTelligent Community 13Fri, 12 Aug 2016 18:36:41 GMThttps://devzone.nordicsemi.com/thread/60005?ContentTypeID=1Fri, 12 Aug 2016 18:36:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b948eee8-b10b-4d99-93f3-5d6d99153883Yacire<p>Hi Raj</p> <p>What is the smartphone you are working with ? If it is an Iphone, you need the Bluetooth accessory design guideline for Apple (google it).</p> <p>You can do a Research on this forum abot this too.</p><div style="clear:both;"></div>