https://devzone.nordicsemi.com/f/nordic-q-a/28478/transmission-currenthello Now i am useing the DK of nRF52832 and SDK14.0.0 of ble_app_uart. I am experimenting to transmit data from external equipment to nRF 52832 and send data to smartphone from there. The picture is shown in below. gyazo.com/9a3bc4b48b031475e6d5dbd3180c2c9ben-USTelligent Community 13Thu, 04 Jan 2018 13:32:43 GMThttps://devzone.nordicsemi.com/thread/112624?ContentTypeID=1Thu, 04 Jan 2018 13:32:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:25d7f6d9-da57-433e-bda9-91aeb261bc59Stian R&#248;ed Hafskjold<p>Yes, this looks like the BLE transmission. 1 mA is a too low, but the resolution on your equipment is probably not good enough to show the peak current. You can have a look here to see the BLE transmission current: <a href="https://devzone.nordicsemi.com/power/">devzone.nordicsemi.com/.../</a></p><div style="clear:both;"></div>