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Although the text of the screenshots might look different in your app, the suggestions are the same.

Communication Error / COMM ERROR

This means that there was an error in communication between the card reader and the mPOS app.

The app might request permission to turn on Bluetooth

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suggestions:

Ensure that you are within Bluetooth range
Restarting the card reader
Disconnecting/reconnecting the Bluetooth connectivity
Remove the card reader from the saved Bluetooth devices and re-pair the device

Network Error/Send Error

Frequently, this means that the internet connection is not working properly or, in rarer cases, Handpoint's back-end system or the systems it connects to are temporarily out of service.

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suggestions:

Check internet settings
Connect to a cellular hotspot point, rather than WiFi, to avoid firewalls
Restart the internet connectivity

Processing Error

An unexpected error was encountered during transaction processing.

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suggestions:

Please retry the operation

Device Not Initialized

The card reader didn't fetch its configuration settings during the initial setup, or there was an error registering the device in the Handpoint system.

suggestions:

Try updating the card reader

Bad Request

This is a response message from the processor/acquirer, and could have multiple causes.

suggestions:

Please proceed escalate to Handpoint following the providing support guide (step 4)

System Error! Invalid Keys

This is a message that may appear on the device screen. This is because the device has been dropped or has been turned off for a long time.

suggestions:

The reader must be replaced or sent for repair (this error cannot be resolved remotely).