NRF Connect v2.03 for IOS iphone 8

[jiandrade91]

Hello there!

I was trying to look up some default values to take an RF measurement and I was wondering what the default Tx power is for the Advertising portion of the app?

I popped it in my chamber and read that the advertising interval was about 33ms (got about three peaks per 100 ms span), but I dont know what power the radio is transmitting at. On the Andriod version of the app, I can choose the advertising interval and the power, but I cannot do this for the IOS version. Not a problem, but I was curious if it was 0dBm or maybe like 4dBm.

thanks!

[Joakim Jakobsen]

Hi!

From the documentation: 

"Core Bluetooth advertises data on a “best effort” basis, due to limited space and because there may be multiple apps advertising simultaneously. While in the foreground, your app can use up to 28 bytes of space in the initial advertisement data for any combination of the supported advertising data keys."
(ref: https://developer.apple.com/documentation/corebluetooth/cbperipheralmanager/1393252-startadvertising) 

Advertising on a "best effort" basis means that these parameters is decided by iOS, so we can't guarantee that the TX-power will be a fixed value. I'm afraid it's not possible control this or let users change it. 

Best regards, 
Joakim Jakobsen

[Dinesh Harjani]

Hi @jiandrade91,

I wanted to tell you that, thanks to your feedback, we've made this information (we can't set Adv. Interval or Tx Power level for Advertising) clear in the UI, so that other users don't have to raise the same question you did.

Thank you very much for your awesome feedback!