ZTE brings affordable 5.7-inch phablet to T-Mobile

In this year's second quarter, ZTE was tied with Motorola for fourth place in the U.S. smartphone market, with a 6 percent share, according to research firm Canalys.

The ZMAX could help ZTE tap the U.S.'s growing phablet market, where the Samsung Galaxy Note is a top product, according to research firm IDC. The U.S. is the world's second largest phablet market behind China, IDC added.