https://devzone.nordicsemi.com/f/nordic-q-a/12925/eddystone-and-iphoneHi all. I am new to BLE and the nrf52 chip. What I would like to do is use the device as a beacon, and also being able to connect to the beacon from both iPhone and Android. From what I understand the iPhone can not start apps from listening to Eddystoneen-USTelligent Community 13Mon, 04 Apr 2016 12:55:05 GMThttps://devzone.nordicsemi.com/thread/49233?ContentTypeID=1Mon, 04 Apr 2016 12:55:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0412e352-52ab-4b39-a7ee-996b2b7a8a20Anders Strand<p>Hello.</p> <p>BLE advertising is when a device broadcasts an advertising packet of up to 32 bytes. When you write code for a BLE device, you can freely decide what to include in this advertising packet. You can read about BLE advertising in our advertising <a href="https://devzone.nordicsemi.com/tutorials/5/">tutorial</a>, <a href="https://devzone.nordicsemi.com/blogs/782/bluetooth-smart-and-the-nordics-softdevices-part-1/">this</a> blog about advertising, or <a href="https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gap">this</a> adafruit guide.</p> <p>An iBeacon or eddystone beacon is a device which broadcasts a certain advertisement packet. Both these beacon types have open advertisement packet structures, so they are easy to create.</p> <p>It would not make sense for an eddystone beacon to mimic an iBeacon. If it does, it is just an iBeacon. It might be to allow iOS devices to scan for them in the background though. Can you post a link to where you read about this? I agree that is was kind of hard to find precise information on the subject. <a href="http://developer.estimote.com/eddystone/">This</a> article over at estimote describes the difference between iBeacon and Eddystone well. The eddystone <a href="https://github.com/google/eddystone">github page</a> can also be helpful.</p> <p>Yes, the nRF52 softdevice can send out two profiles. You must switch the advertising packet periodically. See <a href="https://devzone.nordicsemi.com/question/4867/changing-advertisement-data-while-advertising/">this</a> and <a href="https://devzone.nordicsemi.com/question/63732/adc-values-in-advertising-data-dynamically-changing/">this</a> post about that.</p> <p>Beacon advertising is usually done in non-connectable mode. If you want to be connectable, this is something you set in your advertising config. See the above tutorial. The device will listen for connection requests for a little while after broadcasting the advertisement, and then sleep.</p> <p>-Anders</p><div style="clear:both;"></div>