https://devzone.nordicsemi.com/f/nordic-q-a/89144/phone-s-screen-can-t-be-used-keyboard-when-phone-connects-to-hid-deviceDear Nordic Engineers Our customer use NRF52840 make a electronic lock .They would like to use HID to unlock bike when phone connects to the lock. They are base on ble_keyboard samples. In the program they set err_code = sd_ble_gap_appearance_seten-USTelligent Community 13Tue, 21 Jun 2022 11:02:23 GMThttps://devzone.nordicsemi.com/thread/373411?ContentTypeID=1Tue, 21 Jun 2022 11:02:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5b7f5c3d-e0c8-427d-b647-16ff952dd047tesc<p>Hi,</p> <p>If the device is a HID keyboard device, or otherwise appears as a keyboard, then it is reasonable for the phone to remove the on-screen keyboard. Since you have connected a physical keyboard, it would be logical to use that connected device for keyboard instead of the on-screen keyboard.</p> <p>If a lock appears as a keyboard for a phone, then they are most likely on the wrong track and should reconsider the overall architecture of their solution. They should use a different method for communicating from the lock to the phone. For that they should not use the HID keyboard on the lock. Instead they should either create a completely new custom BLE Service with characteristics for communicating between lock and phone, or base it off of the Nordic UART Service, or find a different suitable BLE Service that fits their need.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>