Hello, i post two threads on the bluetooth-forum but got no answer. My problem: iPhone 4s is a central and scan for peripheral as peripheral i use the CSR1000- at this point i use random resolvable advertising address so first didDiscoverPeripheral -peripheral=null-> okay, no problem-> connectPeripheral->didConnectPeripheral->Pairing appears(IOS6 read some characteristics without my control)->discoverServices->didDiscoverServices-> all thinks are good and i can write or read something. after connection i "cancelPeripheralConnectioN" so scan again: second didDiscoverPeripheral: -peripheral:->not NULL->okay, i got a UUID from peripheral-> connectPeripheral->DidConnect->discoverServices-> didDiscoverServices never appears. try to write or read something->failed->peripheral.services=NIL try to save the service and characteristic->CoreBluetooth[WARNING] <CBConcreteCharacteristic: 0x210f77e0> is not a valid characteristic for peripheral <CBConcretePeripheral: 0x21046190 UUID = <CFUUID 0x21097780> D5753532-9E1D-6C0A-3378-C15977F3E057, Name = "Peripheral", IsConnected = YES> so no valid for this peripheral-> i look at the wwdc2012, at the last page-> central-caches services and characteristics how i can see the cached services and characteristics? thank you for help RomanC _______________________________________________ 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