Chinese technology firm Lenovo is reportedly working on a 5-inch full-HD smartphone, joining the likes of HTC in offering a 1080p display.

Several blogs have posted three screenshots showing off Lenovo's customized Android UI in 1080p, which were first shown on the Chinese Sina Welbo site but have since been taken down.

According to Engadget, the device, currently in its final phase of development, will be between 4.5-inches and 5.5-inches and will be announced in China shortly.

HTC Droid DNA is the first smartphone, already out in Japan as the HTC J Butterfly, to feature a 1080p full HD display. The handset is set to become available in the US on Nov. 21 with a $200 two-year Verizon contract.

The Android phone features a 5-inch 1920x1080p display at 440ppi. It's powered by a 1.5GHz Qualcomm S4 Pro quad-core processor, and boasts of 2GB RAM and 16GB internal storage.

Full HD appears to be the next frontier for smartphones to conquer, with all the major manufacturers rumored to be working on 1080p devices.

These features seem to be favoured by large 5-inch plus handsets, often referred to as 'phablets', which have screens big enough to take advantage of the higher resolution.

Both Samsung and LG are said to be planning to unveil full-HD smartphones early in 2013, according to Korean news site, MK News.

"Earlier in May, LG Display unveiled a five-inch display panel with a density of 440 ppi for smartphones at an exhibition of the International Meeting on Information Display," reported MK News back in October. "LG Electronics will be manufacturing full HD smartphones in H1 next year, using the 440-ppi display panel supplied by LGD".

The site also said that Samsung's smartphone division recently invested in full-HD AMOLED display panels from Samsung Display to load them on its smartphones also to be marketed in H1 next year.

Lenovo's new device is said to have dual-SIM connectivity and early pictures show it working on China Telecom's CDMA2000 China Mobile's 2G networks.