How to Buy a Cell Phone

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, candybar-style phones; slider-style phones that--obviously--slide open; and swivel phones that twist open. Flip phones can be more difficult to use with one hand because the cover may be heavier than the base, and a few low-end models lack a separate caller ID screen on the cover. Fortunately, 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? How about hands-free use: Can you comfortably hold the phone to your ear by scrunching your neck and shoulder? Also, look for 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 nonflip phone weighs about 4 ounces and is about the size of an energy bar--5 inches long, 2 inches wide, and 1 inch thick. Anything above that is considered large. An exception is a PDA phone, like a Palm Treo or BlackBerry device. These phones more closely resembles a PDA on steroids than a cell phone.

Battery life: Most new phones allow at least three hours of talk time and two to six days on standby. Some phones can last up to 14 days on standby. Keep in mind that usage affects battery life, as does the signal strength of your cellular service. 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. Six lines of text are sufficient for most folks; anything less will make your eyes--and your thumb--sore from scrolling. Some handsets let you adjust the font size to fit more text on the screen, but the more digits you pack in, the tinier they get. Consider a PDA phone if you plan to go online or send lots of messages; many models come with a large LCD.

An LCD'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.

Keypad: If you can't figure out how to use certain functions on a phone within a few minutes (with or without consulting the manual), try another. 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 PDA phones and a few standard cell phones come with a small QWERTY keyboard. The tiny keys may not suit everyone, but for those who need them, they're easier to use than a software-based keyboard on a touch-sensitive screen.

Voice communications and organizer: Mobile phones bombard you with call-management features--voice-activated calling, voice recording, phone books, call histories, speed dialing, and so on. Enabling some of the features (such as caller ID, call waiting, and three-way calling) depends on your service plan. Most phones also provide security features that can restrict incoming and outgoing calls, lock the keypad, and protect or mass-delete phone book entries. Some handsets also provide a speakerphone. Some even function as two-way radios, connecting you with others on the same carrier; and in many cases, such communications don't count as airtime--a great benefit for IT personnel and other roving staff.

If you want to talk on the phone hands-free (a must if you use the phone while driving), look for a model that comes with a headset or an earphone. If you don't want to mess with cords, consider a phone that supports Bluetooth; it allows you to pair it with a wireless Bluetooth headset.

Wireless data: Nearly all new cell phones are capable of doing tasks such as sending and receiving e-mail and IM, downloading custom ring tones and simple games, or connecting to the Internet (usually through a minibrowser that's designed to work best with text-only versions of popular sites like Amazon, Google, and Yahoo). Such features, however, are heavily dependent on your provider and your service plan.