Separately, ISIS competitor Google on Wednesday announced a of its Wallet, originally launched in September 2011, that will support credit and debit cards from Visa, MasterCard, American Express and Discover.

ISIS and Google both use near-field communication technology to allow owners to make payments at stores and for transportation. The ISIS consortium includes AT&T, T-Mobile USA and Verizon Wireless.

The ISIS pilot launch date July 27 by TMoNews.com, which also reported that ISIS smartphones for the trial will include the HTC Amaze 4G, Samsung Galaxy S II (but not the S III) and the Samsung Galaxy S Blaze 4G.

An ISIS spokeswoman earlier this week said ISIS is "on track to launch in its pilot markets, Austin and Salt Lake City, this summer." However, she said there were no other details on timing to share.

Other reports have said the ISIS pilots will use Android and BlackBerry devices as well as the , equipped with a special sleeve that contains the NFC chip. The next-generation iPhone, which recent reports say on Sept. 12, is expected to use Bluetooth 4.0 for making mobile payments instead of NFC, according to a number of analysts.