https://devzone.nordicsemi.com/f/nordic-q-a/114035/ble-connectionI connected to the device with BLE, conn handler is 0 and it is sending data. I disconnected, I reconnected, conn handler is 1, it cannot send data. I disconnected again, I reconnected, conn handle is 0, it is still sending data. So when the conn handleren-USTelligent Community 13Mon, 19 Aug 2024 13:13:09 GMThttps://devzone.nordicsemi.com/thread/498856?ContentTypeID=1Mon, 19 Aug 2024 13:13:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77b9751f-c194-4641-a1ca-2f9c4ce83313Susheel Nuguru<p>The connection handler most likely wont change if you have a single connection. What is happening between first disconnect and connect? Are you doing any other BLE activity in another connection?</p> <p>What is your main application use case? How many connections can it handle? What do you mean by you are not able to send data when conn handle is 1? Do you get some errors and logs and error numbers? If yes, which API were you using?</p><div style="clear:both;"></div>