The HTC One (M8) Review

Video

Since the rear facing camera only has a 4MP sensor resolution, there’s no support for 4K video recording - the maximum supported video resolution is 1080p. The available video modes are: 1080p30 (20Mbps High Profile H.264), 1080p60 (also 20Mbps High Profile), slow motion (720p) pand HDR video.

The camera preview in the video modes is pretty good. I noticed some dropped frames when recording 1080p30 but nothing substantial. The preview window when recording HDR video definitely dropped frames, to the point that it was fairly distracting. The resulting video itself was consistent in frame rate but not smoothly responsive to changes in dynamic range.

Extreme Power Saving Mode

This is a feature that seems to be all the rage these days. HTC now includes support for an Extreme Power Saving Mode that can be manually or automatically set to turn on when your battery reaches 20%, 10% or 5% remaining capacity. In the Extreme Power Saving mode you’re locked out from all but five apps (phone, messages, HTC Mail, HTC Calendar and Calculator ). The display brightness is clamped to 170 nits and max CPU/GPU frequency is limited to 1.2GHz and 320MHz, respectively. All four cores remain capable of being plugged in. Background data is also restricted - only SMS/MMS and phone calls will come in automatically. Emails need to be manually refreshed, and all other apps are quit upon entering the mode. The sensor hub is powered down, which disables features like the Motion Gestures and Pedometer.

The Extreme Power Saving Mode features a large, simplified UI. The 5-inch display is evenly divided into large touch targets for each of the five apps as well as a button to exit the mode. The notification shade is disabled as well. You’ll still get alerts for things like open WiFi networks, but you’ll have no way to join/dismiss them while in this mode.

HTC claims up to 15 hours of standby time on the new One when running in Extreme Power Saving Mode (with 5% battery remaining). I still haven’t devised a good battery life test for these modes but I plan on measuring screen on standby time as soon as I get an opportunity to do so.