In June, AT&T launched the iPhone 4. Now, the carrier has followed that up with perhaps its most impressive Android phone to date, the Samsung Captivate.

The Captivate has a 4-inch, Super AMOLED touch screen, a 1-GHz Samsung Hummingbird processor, and a 5-megapixel camera on the back. Like all the Galaxy S phones, the Captivate's software is a mixture of Android 2.1, Samsung's TouchWiz add-ons, and AT&T's picks.

Mobile Managing Editor Sascha Segan had some hands on time with the phone and fears that AT&T's add-ons are where things get tricky for the Captivate. He specifically mentioned that "AT&T's built-in software is also more redundant and more irritating than other carrier's builds".

"For one thing, AT&T blocked the phone from installing applications from anywhere other than the Android Market," said Segan.

Because of AT&T's dedication to the iPhone, Segan's biggest concern is that "Unlike Verizon and Sprint, AT&T has no strong narrative around why you would want an Android phone".

Still he believes that Captivate is a solid smartphone. Other versions from the Samsung Galaxy S line will appear on these U.S. carriers as well: Cellular South, Sprint, US Cellular, and Verizon Wireless. Look for reviews of the units from T-Mobile, AT&T, Sprint, and Verizon soon on PCMag.com.