https://devzone.nordicsemi.com/f/nordic-q-a/8246/how-to-know-what-kind-of-peer-is-connecting-to-my-deviceHi guys, My device is in peripheral role and it normally connects with phones/tablets/computers. I tried to search for device information service but this service is not available on iOS devices. So, is there anyway other way to know my peer&#39;sen-USTelligent Community 13Fri, 17 Jul 2015 17:47:37 GMThttps://devzone.nordicsemi.com/thread/29733?ContentTypeID=1Fri, 17 Jul 2015 17:47:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:826cf73c-2eb1-4f6f-8088-1423ea65b2eeTorsten Robitzki<p>No, there is nothing in GATT/GAP that would be similar to a http agent header (for example). If the central has a public address, you could eventually derive the manufacture of the central device. In the other way, your peripheral device can define an appearance: <a href="https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.gap.appearance.xml&amp;_ga=1.229027228.1800461708.1407160742">link text</a></p> <p>cheers, Torsten</p><div style="clear:both;"></div>