[LG G Flex] Tangodown78:
I'm on T Mobile as well I got the ota update and it was for a app

there appears to be several version of it for various carriers ISIS Search On Google

Looks like a NFC Credit Card storage system. It requires a new SIM card that is fancier

Description (Directly from Google play store)

IMPORTANT NOTES

To use the Isis Mobile Wallet® you need two things:

• An ISIS READY® SMARTPHONE that uses NFC (near field communication) technology to send payment info at checkout. The app is not supported on rooted devices.

Check here for the latest Isis Ready phones: http://www.t-mobile.com/isis

• A T-MOBILE ADVANCED SIM CARD that stores and protects your payment and other sensitive Wallet information.

To find out if you have what you need, visit https://www.paywithisis.com, a T-Mobile store, http://www.t-mobile.com/isis or call 1-800-937-8997 for support.

THE ISIS MOBILE WALLET IS HERE

The Isis Mobile Wallet is a free app available for use with many of the latest smartphones. With Isis®, you can pay with a tap of your phone.

• SHOP with confidence, knowing the Wallet is PIN-protected and if your phone is ever lost or stolen, one call can freeze your Wallet.

• PAY for purchases by adding eligible credit cards from American Express(1), Chase(2) or Wells Fargo(3) to your Wallet or setting up an American Express Serve® Account that you can add money to with your preferred credit card, debit card or U.S. bank account(4).

• SAVE(5) with special offers on purchases and earn loyalty points at participating merchants without having to carry around a bunch of coupons and cards.

HOW TO PAY

Paying with your phone is easy.

1. Open the Isis Mobile Wallet app and enter your PIN

2. Select a payment card to use

3. Hold the back of your phone over the contactless symbol on the terminal at checkout

WHERE TO PAY

You can use the Isis Mobile Wallet to pay anywhere contactless payments are accepted(6) - that’s hundreds of thousands of locations nationwide!

SUPPORTED BY T-MOBILE

Questions?

Customer service is just a phone call away. 1-800-937-8997

(1) American Express Credit and Charge cards - Eligible U.S. consumer and OPEN small business credit or charge Cards, issued by affiliates of American Express, can be added to the Isis Mobile Wallet. All use of this service and your Card in the Isis Mobile Wallet is subject to the Terms of Use at https://online.americanexpress.com/mobilewallet/us/mgmt/wallettou.jsp.

(2) Chase credit cards are issued by Chase Bank USA, N.A. Isis is responsible for the provision of the Isis Mobile Wallet benefits and services.

(3) Wells Fargo credit cards are issued by Wells Fargo Bank, N.A., subject to credit approval. Isis is solely responsible for providing all Isis Mobile Wallet services and benefits.

(4) American Express Serve - Eligibility, fees and restrictions apply. See the American Express Serve Consumer User Agreement and Terms of Use for the Isis Mobile Wallet at https://serve.com/legal.html for details.

(5) Any savings on purchase price may be reduced by interest or other charges you have to pay for the use of credit.

(6) American Express® Cards and American Express Serve in the Isis Mobile Wallet can be used anywhere American Express contactless payments are accepted. Please note that some merchant contactless terminals may not be enabled to accept payment with the Isis Mobile Wallet.

Qualifying Data Plan Required

Isis Terms of Service available at https://www.paywithisis.com/terms.html. Eligibility of payment cards, loyalty cards and offers depends on card issuer and merchant participation. Message and data charges may apply. Ability to tap or transmit loyalty and offer information varies among participating merchants. Isis, Isis Mobile Wallet, Isis Ready and the associated logos are trademarks of JVL Ventures, LLC. Contactless Symbol is property of EMVCo, LLC. Other third-party trademarks are the property of their respective owners. © 2014 JVL Ventures, LLC. All rights reserved.

http://youtu.be/yHMlk-nyYFo