Changing service names and characteristic names

[dmleone]

SDK 15.2 API6.1

I am using the ble_app_blinky and ble_app_blinky_c examples and when i connect I see the "Nordic LED Button Service" and inside that i see 2 chracteristics "Button" and "LED". I modified the code a little to add another characteristic because i have 2 buttons and the LED i want to exchange for another type of device.

How can i change the service name from "Nordic LED Button Service" to "My service name" and "Button" to "Something Else" and "LED to "Not LED". 

From what i have read it appears this is not possible and this values have been added in some deep SIG data, i am very new to Bluetooth, and it seems that any non-standard oir registered service will always displayed as Unknown service. However internally within that service we can modify a user description where i can name the characteristic. I did this and can read the user defined characteristic, but again i would prefer to have it as a main visible service name not as a characteristic value i need to read in order to see.

[Bjørn Kvaale]

From what I can see, it does not seem this is that easy to do (link 1, link 2). It seems that the reason the service is unknown from the smartphone side (nRF Connect for Mobile) is that the UUID is not defined in the database. Service UUIDs that the smartphone app has in it's database (such as predefined Bluetooth SIG names) will show the service name, but custom services will show "Unknown Service" (link).

[dmleone]

So the display on the app is a result of the phone app itself and not necessarily the info stored within the bluetooth packet?

[Bjørn Kvaale]

Yes, it seems so. The phone app does not have the custom service name in its database, which is why it uses unknown service instead.