When smartphone range is shorter than a peripheral(nRF5X), is there any way to receive an advertisement from the peripheral?

[benevbright]

Hi, I made a device with using NRF51822, named 'allb' the wearable device for babies. http://myallb.com

We're planning to make a new version of it with using nRF52840, which has a wider range and Bluetooth 5.0. But my question is that many smartphones do not have a chip that has long range. So, the range of nRF52840 would be much longer than the smartphones.

In this situation that they can't communicate each other, the connection between them will be disconnected. Question, I want to make the smartphone to receive a data even in that situation(Opposite is not necessary).

How can I achieve that? Sending Advertisement can be possible in this scenario? Is the advertising also needed a connection for both sides? (Then, it won't help to resolve my problem)

Or is there any other way?

Thanks.

[Sigurd]

Hi,

In this situation that they can't communicate each other, the connection between them will be disconnected.

If the phone does not support BLE 5 Long Range(CODED PHY/125kbps), you can still establish the connection between the phone and the nRF52840 using the normal PHY(1Mbps) defined in BLE 4.2. With the SoftDevice you can selected your preferred PHY, and you will get an event on the nRF52840 if the phone supported BLE Long Range(CODED PHY) or not.