The Siemens A31 was announced at 2005, November. The Smartphone is released at Discontinued.The Smartphone is released at Discontinued.It has 1.5MB.The device comes in 1 variants: 1.5MB.The Smartphone has 102 x 46 x 17.6 mm, 75 cc (4.02 x 1.81 x 0.69 in) thickness . It comes in 2 color variants, which are Anthracite, Ruby Red.This device packs Removable Li-Ion 820 mAh battery.