|Slogan||"Inspiration comes faster"|
|First released||13 February 2011|
|Successor||HTC Vivid 4G|
|Related||HTC Desire HD|
|Form factor||Slate smartphone|
|Dimensions||122 mm (4.8 in) H
68 mm (2.7 in) W
12 mm (0.47 in) D
|Weight||164 g (5.78 oz)|
|Operating system||Android 2.3.5 with HTC Sense 3.0
Released 31 July 2012
|CPU||1 GHz Qualcomm Snapdragon MSM8255|
|Memory||768 MB RAM|
|Storage||4 GB ROM|
|Removable storage||8 GB microSD, up to 32 GB supported|
|Battery||1230 mAh Lithium-ion battery|
|Data inputs||Multi-touch touchscreen display
Ambient light sensor
|Display||4.3 in (11 cm) class diagonal widescreen
480x800 S-LCD TFT LCD at 217 ppi
|Rear camera||8 megapixel autofocus with dual LED flash, backside illumination|
|Sound||Dolby Mobile and SRS sound enhancement|
|Connectivity||2.5G (GSM/GPRS/EDGE): 850/900/1800/1900 MHz; 3GPP (HSPA+ 850/1900 MHz); Wi-Fi (802.11 b/g/n); Bluetooth 3.0; USB 2.0, DLNA|
|Other||Wi-Fi Hot Spot, FM radio, A-GPS, 3.5 mm stereo audio jack, Micro-USB|
The HTC Inspire 4G is the first smartphone available on AT&T Mobility branded as "4G". It was first announced at CES in January 2011 and was released in February 2011. The Inspire 4G is a variant of the HTC Desire HD that was sold in Europe so the Inspire has the same design and similar specifications except that the Inspire supports AT&T's HSPA+ 4G network.
The Inspire features a 1 GHz Qualcomm Snapdragon processor and an 8 MP camera and dual LED flash, in-camera editing, live picture effects, and a 720p camcorder to capture HD video. It has a 4.3-inch class (480×800) WVGA (16M Colors) TFT capacitive touchscreen covered by Gorilla Glass, a special crack and scratch resistant material made by Corning with multi-touch input support.
The HTC Inspire 4G has 768 MB RAM and 4 GB of internal flash memory data storage. There is also a single microSDHC slot, which can accept a microSDHC card with a capacity of up to 32 GB of data storage.
The Inspire launched with Android 2.2.1 Froyo with the custom HTC Sense 2.0 skin as the user interface. The OS was later updated on 8 August 2011 to Android 2.3.3 with Sense 2.1 and again on 31 July 2012 to Android 2.3.5 with Sense 3.0.
In May 2011, AT&T issued an update allowing unknown sources to be installed, which allows users to sideload applications. On 25 July 2011 AT&T issued Android 2.3.3 Gingerbread, HTC Sense 2.1, and various fixes to the phone.
On 31 July 2012 HTC released software update 3.20.502.52 OTA. New features included: Android 2.3.5, HTC Sense 3.0, Task Manager, and AT&T Address Book. Fixes/Updates included: Call optimization improvements, improved security functionality, SMS/MMS contact display fix, background data use improvement, and slightly longer battery life. This was the last official update for the phone's operating system. In March 2013, AT&T issued a security update for various HTC and carrier applications used in the previous software update.
Original specs pointed out the existence of HSUPA to enhance the upload speeds under the 3G network, but as early adopters inquired about slow upload connections, AT&T replied that the Inspire 4G is not HSUPA capable. However, the Inspire 4G is fully capable of HSUPA, but it was disabled by AT&T for unknown reasons. By 30 April 2011 AT&T issued an over the air (OTA) update enabling HSUPA for the HTC Inspire 4G.