https://devzone.nordicsemi.com/f/nordic-q-a/59779/iphone-ble-communicationWe have a door lock product. At first, the capacitance value of bluetooth frequency deviation was not adjusted, and then it was very difficult for apple to connect with vivo phone. Later find someone else to adjust the capacitance value, the connectionen-USTelligent Community 13Thu, 02 Apr 2020 06:53:26 GMThttps://devzone.nordicsemi.com/thread/243086?ContentTypeID=1Thu, 02 Apr 2020 06:53:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:535f2be9-0933-4eeb-9312-14f020e669e4Andreas<p>Hi,</p> <p>&nbsp;</p> <p>OK, the frequency deviation should be very good.&nbsp;For LFCLK you need to go through what <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.0.1/structnrf__clock__lf__cfg__t.html">accuracy </a>is configured when you initialize the Softdevice, standard 20ppm crystal might be too tight for <em>your board</em>.</p> <p><br />Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/243061?ContentTypeID=1Thu, 02 Apr 2020 01:16:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f41915c6-3489-4aec-afe4-d7efddedfe0cxiaobai<p>Currently only the Iphone6s has a high loss rate, while other models have negligible loss rates.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/242971?ContentTypeID=1Wed, 01 Apr 2020 13:14:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d3874e83-992a-4835-90c0-640bbe985014xiaobai<p><span>frequency deviation：2kHz。LFCLK&nbsp;：default setting。</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/242970?ContentTypeID=1Wed, 01 Apr 2020 13:12:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ebc43835-5f5e-42ed-86d5-71b304a69984xiaobai<ul> <li> <p class="src"><span>I have two iphone&nbsp;6s and 52832 with a packet loss rate of at least 40%.</span></p> </li> </ul><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/242963?ContentTypeID=1Wed, 01 Apr 2020 12:53:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:991f39cf-f97b-4920-aa54-71ebd7cfacefAndreas<p>Hi,</p> <p>&nbsp;</p> <p>Sorry, I am not sure I understand. What is the frequency deviation now (how many kHz error)?</p> <p>&nbsp;</p> <p>What is your source for the LFCLK and what tolerance setting have you configured when initializing the Softdevice?</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>