The increase is part of a bigger picture however, which has seen uploads from mobile phones jump 1,700% in the past six months. The company puts this down to more video-enabled phones on the market and it becoming easier to upload to the site from your phone.
Music Ally has got the full announcement, which also suggests the ability to link your YouTube account to your Facebook or Twitter accounts has also encouraged more people to log on and upload.
So have you ever uploaded a vid from your mobile to YouTube? Have you been one of the 3G S users to contribute to the 400% increase? Let us know below.