This page describes general issues that can arise when using the Scanner Control and proposed solutions to these issues.

Device support

There are examples ( Huawei, OnePlus, some Samsung models and others ) of mobile devices that cannot be used with the scanner device. You can test whether the device supports the scanner as follows.

  1. Try connecting directly from the mobile device Wi-Fi to the scanner.
  2. Some mobile devices have a setting which disconnects from a Wi-Fi if the network does not provide internet access. Try turning this setting off.
  3. Try connecting directly to the scanner from a computer with Wi-Fi.
  4. Try factory reset on the scanner.

Cannot find the device

If the device is not in the list of detected devices (networks) then try these steps.

  1. Make sure that the application is allowed to use your location, and that the scanner is turned on and close by.
  2. If the device has just been turned on, it may take a minute to find the device.

Not connecting

If the app is not connecting to the device then try these steps.

  1. Make sure that the settings for IP and port (connection and destination) are set correct.
  2. Make sure that you selected the correct device. It is possible to select a Wi-Fi network, which is not a scanner, but then you will not be able to connect.
  3. Confirm that the password is correct. The application is not able to indicate whether the password is wrong or correct.
  4. Make sure that no other phones are currently connected to the scanner. Only one connection can be established to a scanner at a time.

Not scanning

When a connection is established, the app will show if labels can be read. The read count will indicate if data is received from the scanner.

If no readings are received then try these steps.

  1. Check if the scanner has been turned off on the device, as it will automatically turn off when not used.
  2. Check whether the LED on the scanner indicates that labels have been read.

Note: The scanner can sometimes lose the connection and then reconnect. It will buffer all readings, but this means that nothing is receieved for a short while and then several readings are received.

IMMS App lost connection

The Scanner Control app uses Wi-Fi to establish a connection to the scanner. So, if Mobile Data is not turned on the internet connection to the IMMS server is lost.

Recommended scanner firmware and Android versions