https://devzone.nordicsemi.com/f/nordic-q-a/41034/link-layer-payload-size-negotiation---nrf_ble_gatt_data_length_setHi, I have the exact same issue as mentioned in the below case - Ticket - LE Data Packet Length Extension does&#39;t work But as this was 2 years ago, I wanted to know if anyone has come across and found out if any versions of iphone or android nowen-USTelligent Community 13Fri, 30 Nov 2018 10:32:04 GMThttps://devzone.nordicsemi.com/thread/159677?ContentTypeID=1Fri, 30 Nov 2018 10:32:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2c124ed8-7a05-4974-9946-5513092fef6dSusheel Nuguru<p>You phone should support it (IOS 10).&nbsp;</p> <p>Please check <a href="https://forums.developer.apple.com/message/213491#213491">this</a></p><div style="clear:both;"></div>