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Card Reader D135 Setup for MobilePOS

December 2, 2025

Description

How to set up the Card Reader D135 as a payment device for MobilePOS

What's in this article?

The Card Reader D135 is a portable device used with the Bank of America's Mobile Point of Sale Solution to take a credit card payment. 

NOTE: 
If you are using the D135 as a payment device for the Point of Sale Solution, refer to Card Reader D135 Setup for Point of Sale Solution for setup information.

What's in the box?

Your Mobile Card Reader D135 comes with a USB Type-C charging cable and an optional charging base.
D135 and accessories

1  Power up

The Card Reader D135 arrives powered down. Connect the Card Reader D135 Charging Base to power using the provided cable. The Card Reader D135 then slides into the Charging Base. Press firmly down to ensure connection for charging and communication. The Card Reader may also be charged by plugging the power cord directly into the Card Reader. Before use, fully charge the Card Reader.

When the blinking red indicator light changes to a solid green, the Card Reader is fully charged. Once charged, hold down the Power button on the side until it beeps, then release. Power down the Card Reader the same way.



D135 in charging base

2  Pair the Mobile Card Reader D135 with your device

Your Mobile Card Reader D135 must be fully charged before attempting to pair it with your phone or tablet. We recommend using the optional Charging Base.

To pair the card reader with your mobile device


  1. Ensure that the card reader is fully charged and that the Bluetooth setting on your phone or tablet is active.
  2. Press and hold the Power button on the Card Reader until the Card Reader beeps and the orange light comes on. 
  3. In the MobilePOS app on your phone or tablet, tap the Menu > Card Reader Setup > Pair Reader. The app will search for the card reader.
  4. When detected, the reader serial number will display. Tap the serial number button on the app.

    NOTE: If the card reader serial number does not appear, confirm that the reader is powered on, Bluetooth is enabled, and that your phone or tablet is within 10 feet of the reader, then tap Rescan.

  5. Tap Confirm to pair the reader to your device. When successfully paired, the card reader will show a green light only.

    NOTE: If a firmware update prompt occurs, follow the on-screen directions to download the updated software. This could take a few minutes.

  6. Open the MobilePOS app on your device.
  7. Enter your PIN passcode. The application opens a Quick Sale screen. You are ready to take a payment.

Take a card payment

The Card Reader D135 accepts chipped card insertions or contactless taps. Your customers can also swipe their cards or use a mobile or digital wallet on a device to make a payment. 

Smart Chip

Magnetic Stripe

Contactless

Mobile/Digital


Insert the card chip-side first and chip face up. When prompted, remove the card. Card Reader D135 insert emv chip payment


Swipe the card through the magnetic stripe reader with the strip toward the bottom of the terminal. 

Card Reader D135 swipe payment


Tap or hold the card within two inches of the top of the terminal. 

Card Reader D135 tap to pay



Hold the mobile phone/device within two inches of the top of the terminal. the customer will then need to approve the payment on their phone/device. 
Card reader D135 mobile payment

Terminal Care

For care guidelines, cleaning recommendations and other best practices, see Terminal Care.

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