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HTC ThunderBolt
	HTC ThunderBolt (Verizon Wireless)
Brand	HTC
Manufacturer	HTC Corporation
Type	Smartphone
Slogan	"HTC Dream.”
Series	Desire HD
First released	Jan 2011
Availability by region	February 2011
Discontinued	June 2012
Predecessor	HTC Droid Incredible
Successor	HTC Rezound
Related	HTC Desire HD, HTC Inspire 4G, HTC Sensation 4G, HTC EVO 4G, HTC EVO 4G LTE
Compatible networks	Dual-band CDMA/EVDO Rev. A/EHRPD (800 1900 MHz); LTE 700 MHz (band 13)
Form factor	Slate
Dimensions	4.85 in (123 mm) H; 2.65 in (67 mm) W; 0.54 in (14 mm) D
Weight	6.23 oz (177 g)
Operating system	Android 4.0.4 Ice Cream Sandwich with HTC Sense 3.6
CPU	1 GHz Qualcomm Snapdragon (MSM8655)
GPU	Adreno 205
Memory	768 MB RAM
Storage	8 GB eMMC (2.58 GB available)
Removable storage	32 GB microSD card pre-installed
Battery	1400 mAh
Rear camera	8.0 Mpx with autofocus, 2 LED flash, with 720p HD video capture
Front camera	1.3 Mpx front-facing, with video capture
Display	4.27 in (108 mm) diagonal; 1.67:1 aspect ratio widescreen; TFT LCD capacitive touchscreen; 480x800 resolution at 215 ppi (0.38 Mpx); Corning Gorilla Glass, crack and scratch resistant
Connectivity	CDMA 800/1900 MHz EVDO Rev. A, 4G LTE 700 MHz, Wi-Fi (802.11b/g/n); Bluetooth 2.1 (upgradeable to 3.0) with A2DP stereo and EDR; A-GPS; FM tuner with RDS, 3.5 mm stereo audio jack, Micro-USB, Mobile Hotspot
Data inputs	Touch or Swype
Hearing aid compatibility	M4/T3

The HTC ThunderBolt (ADR6400L) was the first 4G LTE smartphone on the Verizon Wireless network. It is a CDMA/LTE variant of the HTC Desire HD. It was first announced at CES on January 6, 2011.

In addition to 4G service, the ThunderBolt is the first Verizon phone to support simultaneous voice/data over 3G without the help of Wi-Fi.^[6]

Launch

The phone was launched January 17, 2011. Best Buy was the first retailer to offer a pre-order on February 6, 2011. Wirefly and Amazon both allowed pre-orders a few days before the device was officially launched.^[7] This launch date, however, was much later than anticipated by consumers, frustrating many potential buyers.^[8]^[9]^[10]

There was so much pent-up demand for the ThunderBolt that it broke pre-sale records for at least one online vendor.^[11]

However, despite early demand for the phone, HTC has appeared to struggle in their attempts to address multiple complaints about the device. Some features were removed just prior to release, such as a built-in Skype app with video calling capability. Common reported issues include complaints of short battery life, frequent rebooting, and a much delayed and troubled rollout of an update to the Android Gingerbread platform.^[12]^[13]

Hardware

The ThunderBolt has a second generation 1GHz Snapdragon processor manufactured by Qualcomm, and runs on Verizon's 4G LTE Network. It has a 4.3-inch class (480×800) WVGA TFT capacitive touchscreen covered by Gorilla Glass,^[14] a special crack and scratch resistant material made by Corning. Two cameras are included; an 8-megapixel rear-facing camera, able to record 720p video, with a dual-LED flash, and a 1.3-megapixel front-facing camera. The phone has 768 MB of RAM and 8 GB of eMMC of internal flash memory data storage ( available to user apps & user app data). An external microSDHC card slot supports up to 32 GB more storage memory, which comes preinstalled. The ThunderBolt also comes with a kickstand that works in landscape and portrait positions for photo or video viewing. A LED notification light is located near the earpiece.

Software

The ThunderBolt shipped with Android 2.2 (Froyo) and it was later updated in September 2011 to Android 2.3 (Gingerbread). In early February 2013, the ThunderBolt was updated to Android 4.0.4 (Ice Cream Sandwich) and Sense 3.6.

The 4.0.4 update brought many new features to the Thunderbolt, including new camera filters and features, the ability to capture screenshots, and facial recognition to unlock the device. It also improved the device's stability and improved connectivity issues. Connectivity issues were the reason why HTC and Verizon Wireless did not immediately release the 4.0.4 update. The "Fit the puzzle piece" unlock screen prompt was replaced by “Drag down to unlock.”

Another new feature with the 4.0.4 update was the built-in data manager. This feature helps users manage and view their recent data usage. This feature would show a graph of data usage for the time period that the user had previously set. The feature would also keep track of the user's data usage, and would alert the user when they were close to their data limit, which the user would have previously set.