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In nrf51822 BLE Android, Unable to read characteristics after reconnecting (Android version 7.0 and 7.1)

If the nrf51822 device goes out of range then comes back in range, the application automatically reconnects with the device and tries to read a particular characteristic. This works fine on Android 5 and Android 6, however on Android 7.0 and 7.1, the device reconnects and even its services are discovered but unable to read it's characteristics.

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