https://devzone.nordicsemi.com/f/nordic-q-a/74796/nrf-52840-with-ble5-0-extended-advertisingHi all, I am having a ble 5 beacon broadcast on my nrf 52840 chips. I would like to know that if it is backward compatible so that ble 4 smartphone can receive the packet with trimmed size? Or is there any way to compatible with ble 4 smartphone.en-USTelligent Community 13Thu, 06 May 2021 10:32:43 GMThttps://devzone.nordicsemi.com/thread/308509?ContentTypeID=1Thu, 06 May 2021 10:32:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:259f8857-ad5b-4af5-8907-93c467161d0bMLai<p>As I am using sdk v15.2, I just modified the beacon example with change the properties.type to&nbsp;BLE_GAP_ADV_TYPE_EXTENDED_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED and the length of&nbsp;m_adv_data to&nbsp;BLE_GAP_ADV_SET_DATA_SIZE_EXTENDED_MAX_SUPPORTED. I have modified the application to&nbsp;<span>multiplex the advertising. Thank you.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/308469?ContentTypeID=1Thu, 06 May 2021 08:29:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e4ec7a8a-e7d1-4745-a44b-c11d873c19a6Simonr<p>Hi MLai</p> <p>You can support legacy advertising as well as extended advertising by advertising both with the ADV_IND and ADV_EXT_IND advertising sets (more info on that in <a href="https://www.novelbits.io/bluetooth-5-advertisements/">this blog post)</a>. However, as our SoftDevice only supports one advertising set at a time, you can&#39;t advertise both conccurrently. The way to solve this would be to have the application multiplex the advertising by running legacy advertising for X amount of time, and then restart the advertising entirely to advertise using extended advertising for another X amount of time.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>