https://devzone.nordicsemi.com/f/nordic-q-a/5985/bug-report-cts_c-adjust-reasonAccording to ble specification [1] and based on my test with iOS, the cts_c library seems to have bugs on a process decoding adjust reason data. Here is a simple diffs (line 168-171 on components/ble/ble_services/ble_cts_c/ble_cts_c.c ). // Reasonen-USTelligent Community 13Thu, 12 Mar 2015 12:39:19 GMThttps://devzone.nordicsemi.com/thread/20881?ContentTypeID=1Thu, 12 Mar 2015 12:39:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6eaa5a11-fe95-4d35-b629-44621f6f72dfStefan Birnir Sverrisson<p>Thank you for the feedback. I have reported this to the SDK team.</p><div style="clear:both;"></div>