Hi, I have a custom BTLE sensor (nordic chipset [1]) that works flawlessly when first paired. However, on subsequent app launches it never sends didUpdateValueForCharacteristic. I can switch apps to Settings and "Forget" the sensor. Then, I can use the same workflow to trigger -peripheral:didUpdateNotificationStateForCharacteristic:error and it starts sending data. If I relaunch the app, the sensor doesn't work until I "Forget" it again. Basically, it gets to here and continues once… and after that, silence: [peripheral setNotifyValue:YES forCharacteristic:self.receiveCharacteristic]; Any ideas on why this is happening? I’ve stubbed out all of the delegate methods and nothing is out of the ordinary. Thanks! Caylan References: [1] http://www.nordicsemi.com/eng/Products/Bluetooth-R-low-energy/nRF51822-Devel... _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com