LG's G Pad and Acer's Liquid S2 phone revealed before Ifa

LG and Acer are both claiming "world firsts" with their latest product launches, revealed ahead of Berlin's Ifa tech show.

LG is returning to the tablet market with the G Pad, which the company is marketing as the only 8in (20cm)-class device to feature a "full-HD display".

Acer has announced the Liquid S2 , the first smartphone capable of recording video in the 4K "ultra-HD" format.

It allows the companies to get the jump on rivals in what will be a busy week.

Sony, Samsung, Panasonic, Lenovo, Toshiba, Philips and Dyson are among other companies to have scheduled press conferences between 4 and 11 September at the consumer electronics event in the German capital.