iPhone/iPad can't discover nRF52 (or nRF51)

[Yano]

Hi, I can't seem to pair my iPhone 6s or iPad Air (both v9.2) with demos (uart and temperature) running on my PCA10040. LED1 is flashing indicating that it is advertising but I can't detect anything! I did try a PCA10037 but that didn't work either? I'm sure my nRF51 prototype did work but it doesn't anyone?! Does anyone have any suggestions as to what is going on and how I could debug this issue? Thanks

[Yano]

OK I sorted it out, you don't see BLE devices in Settings/Bluetooth until they have been connected by the app (in this case Nordic UART). Sorry. its been 6 months since I last used BLE on an iPhone (that's my excuse anyway).