https://devzone.nordicsemi.com/f/nordic-q-a/4480/s120-scan-range-is-shortHi. We are doing a few test on the S120 range with the Softdevice v1.0.0. We have a peripheral device that we can scan and connect it with iphone within 50-60m. However when we tried to scan it with our S120 device it only has around 20m range. Ween-USTelligent Community 13Mon, 17 Nov 2014 16:35:18 GMThttps://devzone.nordicsemi.com/thread/15891?ContentTypeID=1Mon, 17 Nov 2014 16:35:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2f73c78e-4e63-40c4-9f1b-895e78c451cfAsbj&#248;rn<p>To answer your question first, the only thing you can do in software is to adjust the output power used from the nRF51822. If you are not using +4 dBm already, then you could try adjusting this.</p> <p>With regard to the range you see there could be a few explanations behind that. I&#39;m not sure what your application looks like and how you are configuring the stack, but to give some examples. It&#39;s likely that the iPhone has a better accuracy on its timing than what&#39;s available on your nRF51822. 16 MHz accuracy on the nRF51822 is directly related to the carrier accuracy and the 32 kHz is used for stack timing. You might also have a board with a less ideal antenna/design compared to the performance of the iPhone. This might not be that much when you only are using it as a peripheral, but when you use your board as both peripheral and central it could be twice as bad.</p> <p>If you connect them using both nRF51822 as peripheral and central, can you then keep the link at a longer range than you need to establish the link?</p><div style="clear:both;"></div>