Sony's PlayStation Vita will have a 20mb filesize limit for 3G downloads for its Japanese launch, in line with Apple's similar policy on downloading over a mobile data network.
On Apple devices, download filesize is also limited to 20mb unless connected by wireless, a limit which Sony has decided to emulate, reports Japanese blog ASCII, translated by Andriasang.
Sony has indicated that this number may change in the future. Sony Europe has been contacted for clarification on whether the limit will apply to European territories too. Sony is yet to announce pricing or carrier parters for the UK.
Download speeds on the 3G model Vita are fixed to 128kbps down, with upload rates capped at 64kbps, allowing Sony's Japanese mobile carrier partner NTT DoCoMo to sell 3G access cards by the hour. However, the 100 hour card, priced at 4,980, grants users 3 hours of free high speed, 14 mbs down and 5.7 mbs up usage.

http://www.gamesindustry.biz/article...o-20mb-over-3g