Inconsistent behaviour nRF51822

[Samra]

Hi I am using Bluetooth Gatt to read/write, discover services from nRF51822 device. But the behaviour is quiet unpredicatable. I am testing on KIT_KAT 4.4. Sometimes there are no services discovered, sometimes there is Service but no characteristic found, Sometimes both of these are discovered properly. Then when i try to write/read characteristic i get a bluetoothGatt status 133.

What could be the issue/issues?

Really stuck!! Please help!!

[Hung Bui]

Hi Samra,

Which central device you were testing with ? We experienced this kind of behaviour with Android 4.3 and 4.4. Things got better with Android 5 and later. I would suggest you to test with our nRF Master Control Panel app. And also to test with a phone running more recent Android version.

Note that in many case the phone will just cache the attribute table and don't do service discovery.