UART Service not found when connecting to Nordic_UART (ble_app_uart)

[fon_brown]

I am using nRF5_SDK_15.0.0_a53641a with a nRF52 Development kit. The board is Rev 1.2.4 (the sticker on the bag says nRF6827 and the sticker on the chip says PCA10040). I am using Keil uVision 5 and have downloaded soft device s132 from s132_nrf52_6.0.0. I downloaded the soft device using nRFgo studio because the instructions for uVision did not work. The ble_app_uarf builds and runs, and evidently advertises "Nordic_UART" because my iphone 5 running the nRF toolbox shows it as an option when I run the UART sub-app and press the connect button, but when I select Nordic_UART, the connection seems to be made and immediately terminate because the UART service is not found. When I show the log I get the following:

Any input would be appreciated.

[tesc]

Hi,

Was this the first example that you tested using that DK? If not then this might be a caching issue where the phone remembers the old GATT table on the device and serves that one to the app.

In any case, can you connect with nRF Connect for Mobile, and see what services and characteristics are found?

Regards,
Terje

[fon_brown]

Your suggestion that it is a caching issue seems to be well founded. I installed nRF Connect and found that the heart rate monitor service was listed, which was the first app that I tried. I turned off my iphone's bluetooth then turned it back on and now the UART is the only service listed. The nRF toolbox seems to work unless I accidentally back out of the UART sub-app without disconnecting first. I can work with that for now. Thanks for your help.