When encountering a SmartPlus-related door-opening failure, please first check: 1. whether the feature is configured correctly, e.g. select the right DTMF code on the SmartPlus Cloud platform; 2. whether the device firmware is the latest version, if not, upgrade it to the latest version and see if the problem still occurs.
Unlock Failure by Bluetooth
The failure may appear as “Opening Door Failed” on the touchscreen door phones. Or, the devices give no response. You can analyze the problem from the following perspectives: 1. The Bluetooth feature is disabled; 2. The permission in the SmartPlus App is disabled.
Enable the Bluetooth Feature Use the door phone X912 as an example. 1. Log into its web interface with its IP address. The initial username and password are admin. 2. Go to Access Control > BLE interface. Make sure the BLE feature is turned on.
Please note that the Trigger Distance determines the door-opening distance in Hands-free mode. The following factors also affect door opening. 1. The Bluetooth signal strength of mobile phones. 2. The presence of an obstacle between the mobile phone and the device. 3. The texture of bags or pockets where the phone is placed.
When encountering door opening failure, try putting the mobile phone somewhere else to reduce the barrier between it and the door phone.
Enable Bluetooth Permission in the SmartPlus App
On the SmartPlus App, tap Me > Authorization. Enable Bluetooth Unlock and select the unlock mode supported by the device.
Make sure the Bluetooth function of your mobile phone is also turned on.
Unlock Failure by NFC
The failure may appear as “Opening Door Failed” on the touchscreen door phones. Or, the devices give no response.
You can analyze the problem from the following perspectives: 1. The NFC feature is disabled; 2. The Mifare card encryption feature is enabled.
Use the door phone R29 as an example. Log into the device’s web interface with its IP address. The initial username and password are admin.
Enable NFC Feature
Go to Intercom > Card Setting interface. Make sure the NFC function is enabled.
Disable the Mifare Card Encryption
The Mifare card encryption feature is not compatible with the SmartPlus NFC feature.
Go to Intercom > Card Setting interface. Disable Mifare Card Encryption.
Tip 1. When unable to troubleshoot, please report the problem through the Ticket system and provide relevant information. | 
