Just in case anyone cares…
According to a recent interview that Mr. Gates gave on Fox News, the ex-CEO of Microsoft is now using phone with an Android operating system. He did not say which Android phone is he using, nor what device was he using before that. Presumably it was a Windows phone, but no one knows for certain. When asked about iPhone, he only said ”no, no iPhone”.
That is all, at least unless you want to delve into realm of gossip and conjectures.