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For every action, there is an equal and opposite reaction. Popular mobile tipster Upleaks leaked a series of videos and images of the purported HTC One M9, revealing the unannounced flagship's complete design, software and camera. As it turns out, the videos were pulled down from YouTube instantly and the Twitter account of Upleaks has vanished into thin air 

(Update: @upleaks Twitter account is back sans leaked videos). If the leaked videos are of any significance, we are looking at upgraded HTC flagship.

Although the originally leaked videos no longer exist on YouTube, the downloaded copies of the videos still exist. The videos show the handset's design featuring a two-tone color combination, upgraded camera and a deeper integration into the phone's themes.

In one of the three leaked videos, the complete design of the HTC One M9 is shown. According to GSM Arena, the key highlights are metal body with two-tone colour finish, BoomSound speakers with Dolby Surround and upgraded camera on both sides. The other videos focus on the handset's overhauled UI, extensive camera features and a new home screen that changes based on users' location, much like Aviate.

Design-wise, the HTC One M9 does not seem much different than the current flagship. But the overall upgrades make the new handset worthy. On the camera front, there are major developments including a 20-megapixel rear-facing camera and UltraPixel front snapper suitable for low-light shooting. There are photo editing tools such as double exposure and three-finger swipes for sharing media that add to the camera improvements.

HTC is expected to make the big announcement on 1 March in a press conference in Barcelona. Even though there is a strong indication that these videos show the real deal, official confirmation will certainly make more sense.