Testing some cool features, Dolphin Browser HD multi-tabs, video-chatting, RDP, video-games, I just did a 37 minute VOIP call using SIP on Fring and using my $8/month 1GB/month SIM card in my Huawei Mifi and it works pretty much perfectly. For some reason audio in Skype and in Fring video-chat is still buggy, but I am sure Archos will fix this in a firmware update imminently. Also see Part 1 of my video review of this product.