Can't discover custom service on android phone

[Valdiolus]

Hello, I am useing nRF52832 with custom-made board.

SD 5.0.0 and 14.0 SDK

I have a strange issue - i am using custom-made service to transfer data from/to smartphone.

I test device with android 8 phone(Huawei P20lite), android 7 phone and iPhone7 (Huawei P9)

I have tested device with android 8 phone and iphone, but forgot to test with android 7 phone (last test was with 11 version of the FW)

And now, after few monthes and FW version 18 device successfully works with android 8 and iphone, but doesn't work with android 7 phone.

In our application i see "cannot fetch the service", and also in nRF Connect app i see only Generic Access Service. And in the same time in android 8 phone nRf Connect shows all 3 services (Generic Access Service, Generic Attribute and custom service).

I tried to compare code of both versions, but in the gap and gatt section they are same.

Can someone help me or give the direction where should I dig in?

upd. Also the same issue with some another phones with Android 5-6

[Sigurd]

Hi,

If you connect to the device with the Android 7 phone using nRF Connect, click on the 3 dots in the upper right corner, and click "Refresh services", are you able to discover the services?

[Valdiolus]

Hi,

Thanks for asnwer, it helped me! After that i can see all services in nRF Connect and in our app.

But how can I do "Refresh service" in our app? Or can I do this in FW?

[Sigurd]

Try a "refreshDeviceCache" and then do the service discovery again. Alos see this and the pdf in this blog post.