The HTC One M9 features the Snapdragon 810 octa-core processor and has the distinctive top-and-tail stereo front speakers that deliver superb sound quality for a smartphone, due to its BoomSound. The device also supports Dolby Audio too. The battery life of the HTC One M9 is similar to the HTC One M8 although it drains rather quickly if users browse the web.
It also features a 20-megapixel image sensor manufactured by Toshiba but does not offer class-leading dynamic range. And dynamic range is not something that a software update may be able to fix since it is more of a hardware issue. It is not clear how the software update will improve the camera of the HTC One M9 but it is unlikely that it would make groundbreaking improvements to it.
The HTV31 also comes with a 20-megapixel duo camera set-up on the rear with capability to record 4K videos as well as a 13-megapixel front snapper. It also has the BoomSound stereo speakers, a Snapdragon 810 CPU with 3GB of RAM and 32GB of internal storage with possibility of expansion via the microSD slot, and the similar 2,700 mAH battery with HTC One M9, details Android Central.
The differences with the HTC One M9 are that the HTV31 has a 5.2-inch QHD display and is capable of supporting LTE. It also comes with an IR blaster and NFC for those who require extra connectivity.