During development, the myTouch 4G Slide was known as the "HTC Doubleshot", which was leaked to the public as the phone's official name.
Release
The myTouch 4G Slide was released to the United States on July 26, 2011 through T-Mobile USA. The phone confirmed rumors written in multiple blogs.
Design
The design of the myTouch 4G Slide is a refinement of that of the myTouch 4G. From the front, the phones look similar; the main differences between the two are small changes to the four physical buttons and a slightly smaller screen. The backs of the phones, however, are noticeably different. The myTouch 4G Slide is thicker than the myTouch 4G due to the Slide's physical keyboard, which is not present on the myTouch 4G.
Hardware
Physical keyboard and input
The myTouch 4G Slide stands out amongst other Android handsets because of its uncommon physical slide-out four-row keyboard. The Keyboard is backlighted when the Ambient Light Sensor detects low light, but this leaves the keyboard hard to see in many common situations. An aftermarket app called Tasker includes control to force the keyboard backlight to stay on. The phone has four physical keys on the front: Home, Menu, Back, and the Genius Button; along with an optical trackpad. "Genius" is a custom voice command and text-to-speech system powered by Dragon Dictation technologies. The Genius Button replaces the Search button from the myTouch 3G. On the sides, the phone has its camera and volume adjustment buttons. On the top, the phone has its lock/power button.
Screen
The myTouch 4G Slide has a 3.7", 480-by-800 pixel, WVGASuper LCD touchscreen. The multi-touch display is designed to be used with either a bare finger or multiple fingers.
Processor and memory
The myTouch 4G Slide features a 1.2 GHz dual-core Snapdragon S3 processor and 768 MB RAM, and supports up to a 32 GB MicroSD card.
Cameras
The myTouch 4G Slide features a rear-facing 8-megapixel camera capable of recording 1080p video at 30 frames per second, with a dual flash that helps illuminate objects in low-light conditions. The built-in camera software comes with features including Sweepshot, Burstshot, HDR, and zero shutter lag. In addition, the myTouch 4G Slide has a VGA camera on the front of the device designed for video calls and self-portraits; it is allowed to be used by other applications. The camera has been highly praised by various reviewers. Notably, the technology blog Gizmodo suggested that the myTouch 4G Slide's camera was "the best camera phone ever".
Battery and power
The device comes pre-installed with a 1520 mAh Li-ionrechargeable battery designed to be user-replaceable. Battery life is stated to be 12.4 days in standby using HSPA+ and 9.8 days in 2G, with a talk time of 6.9 hours or 8.9 hours.
Interface
A modified HTC Sense 3.0 user interface was added to the 4G Slide. Some differences in the Sense modification include a different screen bottom designed specifically for 4G slide, and having only 5 desktop screens instead of the original 7.
Alternative firmware
There is an unofficial port of CyanogenMod 11.0 for the device; the CyanogenMod development team is making efforts towards official inclusion in the list of supported devices. Various other mods and firmware releases also exist.
Networks
The device features quad-band GSM connectivity for 2G networks. For HSPA+ UMTS bands I, II and IV are supported, providing speeds up to 21.1 Mbit/s download and 5.76 Mbit/s upload.
