1 million. The number of HTC G1 sold in U.S.A by T-Mobile. Source [In French] Yet it is equipped with Android, an OS that HTC's competitors can also install on their smartphones. And this Android, except for some drivers and 4 applications softwares, are FOSS. These 4 applications softwares proprietary are: - gMail --> replaceable by a FOSS e-mail client. - gTalk --> replaceable by a FOSS IM Client. - Google Map --> require much work, but replaceable by a FOSS Map Software. - Adroid Market --> replaceable by a package manager (ex: PackageKit) to provide FOSS softwares. So we can say that the HTC G1 was sold with an OS almost pure FOSS to 1 million copies. There are exist even "100% FOSS version" of Android. If HTC can it, Nokia can it. PS: Some people ask for an example with numbers, it is.