The mobile of Samsung cancel re-connect function

[CFF.K]

Hi,

Our product has the HID of profiles and the connection is bonded link. So Auto re-connect in the system of mobile when the bond of the mobile around the device.

But our customer response that their mobile didn't re-connect to device sometimes.

I try to simulate their problem.  When the connect distance is too far cause the encrypt start processing is disconnected.

And then the system of mobile will turn off input devices of profiles. (Refer attachment)

In the result, the mobile cancel re-connect this device. The mobile restore auto re-connect after the user press this device on Bluetooth list or restart Bluetooth of mobile.

How do I modify adv packet or something of the profile to improve this condition?

[Sigurd]

Hi,

Are connecting and paring natively in the BLE settings on the phone, or is this a custom app?

What brand and model is the phone? Samsung, HTC, LG, Sony, etc

[CFF.K]

This is the BLE setting of natively is on all Andriod phone.

But user into this setting interface that the BLE device must is the HID profile.

You could refer below test:

Step1: To use the ble_app_hids_keyboard or ble_app_hids_mouse in the example.

Step2: Remember to add bond function into the example.

Step3: To use Andriod phone bonding with this BLE device.

Step4: Press the bond BLE device setting in the  Bluetooth of paired devices list. 

[Sigurd]

It works fine when I tested this with SDK 15 ble_app_hids_keyboard, and a Samsung S6. After going out of  range, the link will disconnect and keyboard-input on the phone is turned off. When going into range again, the phone and device connected again, and the phone turned on the keyboard-input again automatically.