Others versions of the model are:
A830, released early May, is a 5'' model with flashlight. It is larger and comes with an 2200mAh battery.
specifications are the same as the A820 and has an slightly different casing (147 x 73 x 9.4 mm - 165g)
A820T, again the same specs but It doesn't come with WCDMA 3G support, but is GSM/EDGE unlocked
and has an slightly different casing.
A820e, is the Qualcomm version using a Snapdragon 200 S4 Quad Core (MSM8225Q) SoC running at 1.2Ghz(?)
It also has an 8mp camera, has an Adreno 203 gpu and comes with an flash on the back. (Antutu 10910?)
Its not officially available for the western market but supports GSM/CDMA2000 1xEV-DO and has an slightly different
casing and higher price tag.