A mockup render of the unannounced HTC One M9 Plus made the rounds on Twitter, courtesy of @OnLeaks. The image compares the M9 Plus to the regular HTC One M9 and is said to be based on a prototype of the device.
As you can see in the render above, the biggest difference between HTC One M9 Plus and One M9 is the presence of a physical home button below the display. The solution splits the BoomSound speaker in two and could also utilize a fingerprint scanner.
The circular camera of the handset should hardly catch anyone by surprise. It has already appeared in live photos.
HTC One M9 Plus might debut with two different chipsets - a MediaTek MT6795 model could cater to the Chinese market, while a Snapdragon 810 version will be sold elsewhere. The rest of the device's rumored specs include 5.2" QHD display, fingerprint scanner, 3GB of RAM, and 32GB of expandable memory.