Both feature 720p screens and 8-megapixel cameras.
Following the unveiling of the ZTE Grand S at CES 2013, the Chinese handset manufacturer appears to be working on two additional 5-inch smartphones.
Dubbed the ZTE U956 and ZTE V987, both devices feature 5-inch 720p displays. Comparatively, the Grand S offers a full HD display.
The V987 sports the same design as the Grand S, but has a slightly larger chassis. The device appeared on a Chinese regulatory database, which confirmed it's powered by a 1.2GHz quad-core processor, as well as sporting a 8-megapixel camera. Its battery, meanwhile, is a 2,500mAh pack.
The ZTE U956 houses the same 8-megapixel snapper found in the V987, while an unknown source claimed the smartphone would also boast a quad-core processor. Its price is rumored to be $240.