AT&T and Sprint Tuesday separately announced plans to start selling 32GB HTC One smartphones on April 19 for $199.99 with a two-year contract.
AT&T said it will be only U.S. carrier to launch a 64 GB version of the HTC One. The high-end device will sell for $299.99 with a two-year contract.
Meanwhile, T-Mobile USA said Tuesday that it will begin selling the HTC One device "sometime in the spring." T-Mobile said it will charge $99 down with 24 equal payments of $20 in a low-subsidy, no-contract plan.
Online reservations for AT&T's HTC One device will begin at 1 p.m. (CT) Thursday.
Online reservations for the Sprint HTC One begin on Friday at an undisclosed time.
AT&T is also offering for a limited time a free (with separate two-year contract) HTC Media Link HD wireless HDMI adapter with the device to connect the phone to an HD TV.
AT&T and Sprint each confirmed that the HTC One will be available in black or silver.
The HTC One runs a 1.7 GHz quad-core processor, sports an aluminum case and has a 4.7-in. full HD screen. It runs Android 4.1 and has a new HTC Sense interface that some analysts have compared to the tiles used in Windows Phone 8.
The device will run on the LTE wireless networks of both AT&T and Sprint (and in seven cities so far with T-Mobile), and has a bigger than average 2300 mAh battery.
Verizon Wireless Tuesday would not comment on its plans for the HTC One. Verizon is not listed as offering the HTC One on the HTC Web site.
AT&T posted a short video about the HTC One on its Web site with a full press release.
The HTC One is arriving several weeks later than the mid-March time frame that HTC announced in mid-February.
At the February announcement, one of the biggest innovations touted by HTC was its Ultrapixel camera, designed to take better photos in low light. The camera is rated at 4 megapixels, but HTC argues that it can capture more light and uses fewer, but larger pixels for better shots.
Several smartphones on the market now have 13 megapixel cameras.
Matt Hamblen covers mobile and wireless, smartphones and other handhelds, and wireless networking for Computerworld. Follow Matt on Twitter at @matthamblen, or subscribe to Matt's RSS feed . His e-mail address is firstname.lastname@example.org.