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]

So back to my original question, in the position that smartphone and device can't be connected because of out of range but device's signal is enough to reach to the smartphone, Is there any way to send a data to the smartphone?

You can then try to send packets to the smartphone using regular advertisement packets. In this scenario I would recommend increasing the TX power on the nRF52 using the function sd_ble_gap_tx_power_set(). Default value is 0 dBm, but you can increase it to +9 dBm on the nRF52840.

For maximum range, tuning of the antenna is very important. Note that we at Nordic can tune the antenna on your product for free.