Get to know your 3G Card Reader. From features to general operating tips, the manual below offers a comprehensive look at our reader.

For help setting up your 3G Reader, check out the article SumUp 3G: Setup Guide.

 setupguideicon.png  General usage

In order for the SumUp 3G Card Reader to operate and process payments, it only requires a network connection. For optimal usage, please ensure you are processing payments in areas that are above ground.

 simcardicon.png  SIM Card

The built-in SIM card provides the card reader with unlimited free data by connecting to the best available network, meaning no extra costs. It is imperative you do not replace the included SIM card or tamper with it. The reader will only work with the SIM card provided and will not work with a different SIM card.

 chargingicon.png  Charging

Charge the SumUp 3G Card Reader with the included USB type C cable by connecting it to your computer or another power source. Note: The reader is able to accept transactions while charging.

 connection.png  Connection

With the included SIM card, your device should automatically establish a connection anywhere where cellular network is available.
If your device is having difficulty establishing a connection and displaying the message “Connection Error”, try the following tricks:

  • Restart the device. Power off your device by holding the power button down for 4 seconds or until the 4 green LEDs turn off. Wait a few additional seconds and then turn the device on again.
  • Change your location. Open areas and those near windows are ideal for connection.
  • Contact SumUp Support. Our Support Team is available via email or by phone to assist you with any issues you may have.

 generaluseicon.png  Transaction History

Gives you an overview of all your transactions with details such as date, time and amount. You can also see whether your transactions were successful, failed, refunded, paid-out, or charged-back in one glance.
Select a transaction from the list to send a receipt or issue a refund.

 menuicon.png  Settings

Check out the 3G Card Reader’s menu options.

To enable the tipping function on your reader, go to the menu, scroll to “Settings”, select “Tipping” and then select “Tipping on”. Your reader’s screen will now display a tipping option after the amount for a transaction has been entered, allowing the customer to enter the amount they wish to tip. The tipping function can also be disabled later by following the above steps and then selecting “Tipping off”.
Language Settings
To manage the language settings of the device, go to the menu screen, then select “Settings” and then “Change Language” where you can choose the language for your device.
Log out
To log out of the reader, select "Settings" and then "Log out". This capability is useful when sharing the reader among other business partners and employees.

 myaccounticon.png  My Account

To see which account you are logged into on your 3G reader, go to the menu screen, and exit it by pressing the cancel button or the back button. Your merchant ID and account name will then be displayed on the screen for a few seconds.

 refund.png  Issuing Refunds

To issue a partial or full refund from your device go to your "Sales History", click on a transaction and scroll down to "Refund transaction". Then simply choose between "Full refund" or "Partial refund". You can also issue refunds in your dashboard at

powerofficon.png  Standby mode VS Power off

Standby mode allows the reader to remain connected to the cellular network which enables you to be ready for a transaction at a moment’s notice. Briefly press the power button to have the device go into standby mode.
Note: The reader will automatically go into standby mode after 4 minutes without use.

To completely turn off the device, hold down the power button for around 4 seconds or until the 4 green LEDs turn off. Kindly note that after the device has been switched off, it will need to reconnect to the cellular network once it is turned on again.

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