Yahoo! has today updated its Yahoo! Mail apps for Android and iOS to introduce support for threaded messages (which it is calling “Conversations”), themes, and 1TB of storage for every user. That’s enough to store 500,000 to 1 million attachments, Yahoo! says, or 6,000 years’ worth of emails for the average user.

Google chairman Eric Schmidt has dismissed claims that Android is insecure by claiming “it’s more secure than the iPhone.” The platform, which has more than a billion users worldwide, goes through rigorous real-world testing, Schmidt said, before promising consumers would be happier with Android “more than you can possibly imagine.”

We knew inline adverts were coming to Gmail’s mobile apps after Google added support for them in its latest Android update, and this week they’ve started appearing in users’ inboxes. Just like in Gmail on your desktop, the ads are displayed under the ‘Promotions’ tab and they cannot be turned off, but you can dismiss the ones you’re not interested in.

Microsoft is trying to persuade HTC to make new smartphones that run both Android and Windows Phone, and it’s willing to cut or eliminate its own license fee to make it happen. The software giant is hoping the move will encourage consumers to try out the Windows Phone platform and eventually make the switch to it — but could the scheme backfire?

Google is already serving you Gmail ads on your desktop, and soon you’ll see them on your mobile, too. Although they aren’t active just yet, there is evidence for them in the latest Gmail for Android release, which was made available to download via Google Play last week.