Configuring a PAX Terminal Cellular Connection Using a SIM Card
This section describes how to configure the PAX terminal cellular connection using a
SIM card.
If your Wi-Fi connection is out of range, the PAX terminal can use a cellular
connection to connect to the internet. Although using a cellular connection is slower
and possibly more expensive than using a Wi-Fi connection, it is an effective back-up
method.
A SIM card is required in order to configure a cellular connection for the payment
terminal. The SIM card provides access to 4G/3G networks for a cellular
connection.
IMPORTANT
A SIM card is not provided with the payment terminal, so you must purchase
it separately. Your service provider can recommend which SIM card to use with your
PAX terminal.
In order to help reduce data and operating costs, you can work with Customer Supporthttp://support.visaacceptance.com to remotely install software updates and
apps on your terminal using only a Wi-Fi connection.
Inserting the SIM Card into the PAX Terminal
Follow these steps to insert the SIM card into the PAX terminal:
Figure:
PAX A77 Terminal Back View Showing SIM Card Slot Locations
- Turn off the power to the terminal.
- On the back of the terminal, slide the battery cover latch to the right, then remove the compartment cover.
- Remove the battery from the compartment.
- Insert the SIM card into the lower-left corner of the compartment with the contacts facing down to match the contacts on the terminal. The diagram on the inside of the compartment shows where to insert the SIM card.
- Replace the battery in the compartment.
- Replace the compartment cover, then slide the cover to the left to close it.
Entering the SIM Card PIN into the PAX Terminal
Before you can enter the SIM card PIN into the PAX terminal, you must insert the SIM card
into the PAX terminal.
Follow these steps to enter the SIM card PIN into the PAX terminal:
Figure:
PAX Terminal Settings and SIM Cards Screens

- Turn on the power to the terminal. The terminal prompts you to enter the PIN for the SIM card that you installed.
- Enter the PIN carefully because you are allowed only three attempts to successfully enter the PIN. After the third attempt, you must enter a personal unlocking key (PUK) before your mobile carrier blocks the SIM card.
- When you enter the PIN successfully, the payment terminal detects the SIM card. A notification appears on the screen.
- To verify that the SIM card is recognized and enabled, tap theSettingsicon on the terminal Home screen.
- Enter your password, if prompted. The Settings screen appears.
- In the Wireless & networks section, tapSIM cards. The SIM cards screen appears.
- Verify that the SIM 1 field is enabled and that the SIM 2 field is disabled.
- Tap the back arrow until you reach the Home screen.
Configuring the Cellular Network Connection for the PAX Terminal
Before you can configure the cellular network connection for the PAX terminal, you must
enter the SIM card PIN. For more information, see Entering the SIM Card PIN into the PAX Terminal.
Follow these steps to configure the cellular network connection for the PAX
terminal:
Figure:
PAX Terminal Settings and More Screens

- On the terminal Home screen, tap theSettingsicon. You are prompted to enter the system password.
- If you are a first-time user, enter the default Settings password:pax9876@@. Tap theCheckmark. The Settings screen appears.To change the default password, in the Device section, tapPassword. Follow the prompts to change your password.
- If you changed your password before, enter your system password. Tap theCheckmark. The Settings screen appears.
- In the Wireless & networks section, tapMore. The More screen appears.
- ChooseCellular networks. The Cellular networks screen appears.
- Enable theData enabledfield by sliding the toggle switch to the right.
- To exit the screen, tap the back arrow until you reach the Home screen.