Luckily, there are a few pics and specs to accompany the filing, which tell us it weighs 120g (4.2 ounces) and measures 132.6 x 65.5 x 6.18mm (5.2 x 2.6 x 0.2 inches), meaning it could be the super-slim P series handset a Huawei exec hinted at in January.

ENGADGET

With the exceptions of the iPhone and the Galaxy S series, a successful handset today might sell 20 million units.

ENGADGET: Switched On: Extreme takeover, Home edition

As the flagship handset in ZTE's high-end Grand Series line of products, the ZTE Grand S is the company's first FHD smartphone and the world's thinnest within 5 inch FHD quad-core smartphones, enabled by the Qualcomm Snapdragon S4 Pro processor, a product of Qualcomm Technologies, Inc.

ENGADGET: ZTE Grand S unveiled: at 6.9mm, it's the 'world's thinnest' 5-inch, 1080p phone