How to Buy a Cell Phone

Key Phone Features

Wireless standard: World travelers are more affected by wireless standards than are users based strictly in the United States. Most of the world uses networks based on the GSM (Global System for Mobile communications) standard. U.S. carriers, however, use a variety of networks in addition to GSM. U.S. carriers work on the CDMA (Code Division Multiple Access), TDMA (Time Division Multiple Access), iDEN (Integrated Digital Enhanced Network), AMPS (Advanced Mobile Phone Service), GPRS (General Packet Radio Service), EDGE (Enhanced Data rates for Global Evolution), and/or EvDO (Evolution Data Optimized) standards. AT&T runs on the AMPS, EDGE, GSM, GPRS, and TDMA networks. Sprint Nextel uses the iDEN network exclusively. Sprint and Verizon Wireless run on CDMA and EvDO; Verizon also uses AMPS. T-Mobile supports GSM and GPRS networks. It is important to note that while AT&T runs on both GSM and TDMA networks, the services and the phones that use them do not interoperate.

Band support: The more radio bands a phone supports, the more frequencies it picks up. Quad-band phones, as their name suggests, operate across four frequency bands. Theoretically, they provide better coverage than triple-, dual-, or single-band phones. These so-called world phones are compatible with four GSM frequencies--850 MHz (prevalent in the United States), 900 MHz (prevalent in Europe), 1800 MHz (prevalent in Asia), and 1900 MHz (also available in the U.S.). As a result, they function around the globe. You can also find tri-mode phones that work on two digital frequency bands in addition to an analog network, a particularly handy feature if you travel to rural areas.

Design: You can choose among flip-open, clamshell-style phones; nonflip, candy bar-style phones; slider-style phones that--obviously--slide open; and swivel phones that twist open. Low-end flip phones may lack a separate caller ID screen, but many new phones sport dual screens--a small, external LCD on the cover plus an internal display. If you buy a nonflip phone, make sure it has a keypad lock that prevents inadvertent dialing--a helpful feature when you put the phone in a pocket or bag.

Whichever type of phone you choose, check its ergonomics. Is it comfortable against your ear, and can you hear callers without constant adjustment? Can you use the phone with one hand? Consider hands-free use: Can you comfortably hold the phone to your ear by scrunching your neck and shoulder? Also, look for the placement of the headset jack--a jack located on top of the phone is often more convenient than one located on the side.

Size and weight: Part of what makes a phone easy to use is its portability. A typical standard cell phone weighs about 4 ounces, and most nonflip models are about the size of an energy bar--approximately 5 inches long, 2 inches wide, and 1 inch thick. An exception is a smart phone with a full QWERTY keyboard, such as a Palm Treo or BlackBerry device. Though these hybrid units continue to get smaller and slimmer, they are larger than a basic cell phone, and you should keep that in mind if you plan to use one for long phone calls.

Battery life: Most new phones allow at least 4 hours of talk time and 2 to 6 days on standby. Some phones can last up to 14 days or more on standby. Keep in mind that several factors affect battery life; high-speed 3G networks tend to be power-hungry, for example, and the phones that support them often have shorter battery life. The signal strength of your cellular service also has an effect, since a phone that constantly searches for signals will run itself down quickly. Depending on the phone, recharging the battery should take about an hour or longer. When you buy a phone, consider optional accessories such as a higher-capacity battery and a portable charging adapter for use in a car.

Screen: If you intend to send and receive text messages, surf the Web, or use the phone's organizer, make sure the screen is up to snuff. Make sure it's big enough for you to take full advantage of the phone's features. If you're going to surf the Web or edit office documents on your phone, a screen that's less than 2 inches diagonally will feel very small.

The screen's contrast and backlight strengths are also important. The phones we've seen show marked differences in viewing quality. If your phone allows you to adjust such settings, you can make text and graphics easily viewable--even in bright places. These days, most phones offer color screens, which are easy on the eyes.

When the first-generation iPhone launched in 2007, it touched off a touch-screen frenzy. Since then, more and more phones have come out with touch screens. If you're looking for such a phone, keep in mind that not all touch screens are created equal. Some--like the iPhone's screen--support multitouch, which means they can register more than one touch point at a time. This technology allows you to pinch and grab the screen to zoom in and out on a Web page, for example. Other phones support single touch only, and can register only one tap at a time. Some touch screens also offer a type of feedback--either a slight vibration or a sound--when they register your touch, which can prevent you from tapping needlessly. Finally, consider ease of use: How simple is it to scroll through items on a particular touch-screen menu? Can you adjust the sensitivity of it to your liking?

Keypad: If you can't figure out how to use certain functions on a phone pretty quickly (with or without consulting the manual), try another; remember, though, that if you're looking at a phone that packs a lot of features, you should spend some time learning how to use them. Regardless, the keypad layout and menu system should be intuitive. The buttons should be responsive and easy to press. Check out the navigation buttons on the keypad. A joystick-style knob on some phones can make navigating menus quick. Most handsets come with up/down and left/right arrow keys. Buttons that protrude slightly are much easier to use than flat or recessed keys.

Many smart phones come with a small QWERTY keyboard. The tiny keys may not suit everyone, but they can save you a great deal of time if you plan to use your phone for sending e-mail messages and editing office documents. Even very small QWERTY keyboards can be much easier to use than a software-based keyboard on a touch-sensitive screen.

Operating system: If you're looking to do more than make calls and send text messages with your phone, you should consider the platform on which it runs. The mobile operating system you choose will greatly affect the capabilities of your phone. Smart phones that run the Windows Mobile OS, for example, usually come with mobile versions of the Microsoft Office suite, so you can view and edit documents when you're away from your PC. Windows Mobile is available on a wide range of handsets from all carriers, so you'll have plenty of choice in hardware. The Palm OS is not as widely available, but it retains a devoted following, largely because of its easy learning curve; you'll also find a good deal of productivity software available for Palm OS-based phones. The Symbian platform, which is available on most Nokia smart phones, is not as user-friendly, but it supports a range of business and productivity apps.