Apple iphone 4g (also to be called as iphone hd) the features include a much higher upgraded display screen resolution of 640 x 940 pixels, 3g connectivity, an a4 processor, a 5 mp camera with 720p hd video recording support, a front camera for video conferencing, wi-fi, bluetooth, digital compass, social networking integration, battery life has been improved compared to the previous version, tougher anti-jailbreaking measures have been implemented. iphone 4g specifications*: dimensions 115.5 x 58.7 x 9.4 mm weight 140 g display - 3.