HTC announced and released HTC One M8 smartphone on March 2014 that comes up with an android OS v4.4.2 Kitkat up-gradable to v5.0 lollipop and planned upgrade to v6.0 Marshmallow. This phone has a dimension of 146.4 x 70.6 x 9.4 mm (5.76 x 2.78 x 0.37 in) with 9.4mm thickness and weighs about 160 grams. This phone supports GSM/ HSPA/ LTE network configurations.It uses nano SIM card. The display is of 16M colors and has Super LCD3 capacities touchscreen. The screen size is 5.0 inches and the screen-to-body ratio is 66.7%. The screen resolution is 1080 x 1920 pixels which is exactly 441 ppi pixel density. It supports multi touch and comes up with Corning Gorilla Glass 3 protection with HTC Sense UI 6.0. It has got Qualcomm MSM8974AB Snapdragon 810 chip-set and CPU comprises of Quad-core 2.3 GHz (US/EMEA)/ 2.5 GHz (Asia, China) Krait 400 processors. The GPU used is Adreno 330. The internal memory available is 16/32 GB and it contains 2 GB RAM. It also supports micro SD slot that could be upgraded up to 128 GB.
The primary camera comprises of a Dual 4 MP, f/2.0, 27 mm, auto focus, dual-LED (dual tone) flash  while secondary comprises of 5 MP, f/2.0, 1080 p@30 fps, HDR camera. The video feature is 1080 p@60 fps, 720 p @120 fps, HDR and stereo sound recording. The microphone jack is 3.55 mm and has got stereo loudspeakers. The WLAN supported are Wi-Fi 802.11 b/g/n/ac, Wi-Fi Direct, dual-band, DLNA and hotspot. The Bluetooth version is 4.1, A2DP, apt-X. It also has Stereo FM radio with RDS. The USB available is v2.0 micro USB (MHL 3.0 TV-out), USB Host. It also comes with compass, accelerator, gyro and proximity sensors. The messaging can be performed via  threaded view, Email and Push mail. The GPS technology is A-GPS, GLONASS. The browser is HTML 5. It comes with fast battery charging feature that charges 60% in 30 mins and contains Google Drive with 100 GB cloud storage. The battery used is Non-removable Li-Po 2600 mAH battery that gives up to 271 h(2 G)/Up to 496(3 G) standby and talk time up to 14 h(2 G)/Up to 20 h(3 G). The colors available are Gunmetal grey, Amber Gold and Glacial silver.