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ble_app_proximity errors

Hi,

I'm testing ble_app_proximity example (...\Nordic\nrf51822\Board\nrf6310\s110\ble_app_proximity). I'm using Master Control Panel Android app version 2.0.3 and Nexus 5 with the latest Android 4.4.4. I've noticed a few errors that seems to appear randomly.

  1. When I try to connect to "Nordic_Prox" sometimes I get Error(0x81): GATT INTERNAL ERROR Error(0x85): GATT ERROR

  2. While reading the Tx Power Level sometimes I'm getting Error(0x89): GATT AUTH FAIL, on another phone with Android 4.4.2 these errors also occasionally occur. image description image description image description

Thank you in advance for any advice how to eliminate these errors