Turn the handset on its sides and you'll notice some minor alterations. To accommodate the CDMA antenna, the ringer mute switch on the left side has been moved slightly closer to the volume controls. It makes no difference in usability, but the change means that most current iPhone 4 cases, including the bumpers that Apple gave out for free last summer, won't fit properly. Over on the right side, the SIM card slot has vanished because the handset runs on CDMA.

Apple moved the Verizon iPhone's ringer mute switch closer to the volume controls. In its place is the antenna gap that's on the top side of the AT&T phone.

In another change, the gap that sits next to the headset jack on the GSM version has moved to the left side just above the ringer switch. Apple wouldn't discuss the specifics with CNET, nor would it confirm which portions of the antenna serve which features (on the AT&T phone, one portion of the antenna was for Wi-Fi and Bluetooth, and the remaining portion of the antenna powered cellular calls). We're not prone to conspiracy theories, but it wouldn't surprise us if Apple tweaked the antenna design following last summer's "antennagate" drama. But more on that later.

A feature you gain
Inside, the Verizon handset offers a few more differences, both good and bad. Big Red initially beat AT&T by offering a personal hot-spot feature that can support up to five devices. You can establish the connection through and Wi-Fi, Bluetooth, or a USB cable and use all three methods at the same time. Though AT&T with, the carrier limited the number of devices that can make wireless connections to just three.

Before you can use the hot spot, though, you'll need to activate the option with Verizon. The feature will cost an additional per month, which is cheaper than Sprint's monthly charge, but more expensive than T-Mobile's .99 fee. For that price you're limited to 2GB per month, after which you'll pay for each additional gigabyte. On the whole, those charges aren't outrageous for what you get.

Once you're set with the carrier, the hot-spot option will appear in your Settings menu. Then, after you set a password and choose which connectivity options you'd like to use, you can get started. We tried connecting a number of devices including a laptop computer, an iPad, an AT&T iPhone 4, a LG Optimus S, a RIM BlackBerry Torch, a, and a T-Mobile MyTouch 3G.

For most devices, the connection process over Wi-Fi was quick and painless. The MyTouch 3G was able to find the hot spot, but for some reason it could hold the connection for only 5 seconds before dropping it. The Ideos, meanwhile, was not able to locate the iPhone, even when they were next to each other.

Though those hiccups weren't encouraging, they could be the fault of the other phones. What's more, once we tossed them aside, the hot spot performed well even at full capacity. Web browsing on the laptop, for example, was only a few seconds slower than what we normally experience on CNET's wired network. Uploading a Facebook photo took about 10 seconds (versus the usual 5 seconds), and we were able to load a number of graphics-heavy Web sites without any problems. We had a similar experience when using a USB cable for the PC; it was a bit slower than normal but nothing drastic.

Browsing on the iPad and phones was satisfactory as well. Like on the computer, it took a bit longer to perform tasks then when we were connected to CNET's Wi-Fi, but the speeds weren't painful. Connecting through Bluetooth was trickier; we weren't always able to establish a connection and then keep it once we had it. Battery life on the hot spot was respectable. When, the iPhone went 5.2 hours before dying. That's just a bit more than the T-Mobile MyTouch 4G running the same test.

The Verizon iPhone tracks how many devices are connected through the hot spot.

Even with those few issues, the hot spot is user-friendly and it makes the Verizon iPhone an even better mobile-computing device. You don't get individual notifications when you connect a new device, and you can't see what is connected at a given time, but a status bar at the top of the display conveniently tracks how many gadgets are linked up. Yet, as with so many other things on the iPhone, the hot spot isn't the first or the best we've seen of its kind. It may do things differently, but it's not better. Remember that some handsets, like Sprint's HTC Evo 4G can support up to eight devices.

Features you keep
Outside of the hot spot, you can expect the usual iPhone goodies. You'll get the 5-megapixel camera with LED flash, front-facing VGA camera, Bluetooth, digital compass, e-mail and messaging, iPod player, voice control, voice memo recorder, assisted GPS and Google Maps, Safari browser, access to apps and media through iTunes, and FaceTime over Wi-Fi.

The Verizon iPhone has the same camera features as the AT&T version.

The polished interface also remains the same, though the Verizon iPhone currently runs iOS 4.2.6; the AT&T iPhone runs iOS 4.2.1. Apple said 4.2.6 is a version unique to the Verizon handset and that its only changes are support for CDMA and the hot-spot feature.

The Verizon iPhone's photo quality also is no different form the AT&T handset.

Though the phone is impressive, the smartphone market is a thousand times more mature than it was in 2007 when the original iPhone hit, and even in 2010 when the iPhone 4 first went on sale. We don't doubt that the Verizon iPhone will be successful, but it faces heavy competition from rival carriers and even from within Verizon's own lineup. Some offer features that the iPhone can't touch, and there are plenty of people who have interest in buying Apples device. The iPhone is on a new carrier, but it remains just one player in a very competitive field.

Source: www.cnet.com