Isis Mobile Wallet, the mobile payment joint venture between Verizon, T-Mobile, and AT&T, has finally gone nationwide as of this morning. After what seemed like an eternity of testing, those who live in Salt Lake City, UT and Austin, TX are no longer exclusive members of this mobile payment community. Apps for each carrier’s version of Isis are available on Google Play, along with showcases of the service in individual carrier stores.

For those not family, Isis Mobile Wallet allows you to use your phone as your wallet. Thanks to tap-to-pay terminals at retailers and checkout stands nationwide, your phone can be used to pay for goods with credit cards stored securely on your device. Isis currently only supports Chase and American Express though, so even after a couple of years of testing, it’s not exactly the powerhouse mobile payment system we were hoping it would be. It does support loyalty and merchant cards in case you were looking for a place to digitally store those.

But assuming you have a Chase or American Express card that you’d like to attach to Isis, you’ll first need to pickup an “enhanced” SIM card from your carrier that will allow Isis to work. You’ll also have to own one of the 40 smartphones that have been deemed Isis-ready.

If you make the cut, the newly revamped Isis app that hit Google Play today should include a tutorial on how to get you up to speed and cards added. The previous version of Isis was, to put it bluntly, terrible. Hopefully this new version is much easier and smoother to use.

So, this is the moment we have all been waiting for. Isis is typically thought of as the reason we were blocked from Google Wallet for so long, however, it feels like it has completely under-delivered with its lack of universal credit card support. Or maybe I’m just still irked by the Google Wallet fiasco. Either way, feel free to give it a shot and let us know how it goes, assuming your device is supported.

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