Google is taking a page out of Dropbox's book and offering free extra storage for certain HTC One handsets. The HTC One Max got 50GB of storage space out of the box, but we've been tipped that those with the handset's smaller sibling will net an additional 25GB of room in the cloud, all thanks to the international Sense 5.5 (and Android 4.3) update that readers have already started receiving in Europe. These expansions are in addition to the complimentary 15GB of Drive space available to all Google users, bringing the allotted storage totals to 65GB and 40GB for the One Max and One, respectively. There are a few caveats, though. According to Mountain View, the HTC One Developer Edition isn't eligible for this due to its unlocked bootloader. Furthermore, you can only activate this promo once per Google account, which rules out gaming the offer to get even more space. Got all that? Good -- there's a quiz later.