It’s too much work, like using a manual typewriter. (“I couldn’t send two e-mails on this thing,” said one disappointed veteran.)

It’s no help that the Storm shows you two different keyboards, depending on how you’re holding it (it has a tilt sensor like the iPhone’s).

When you hold it horizontally, you get the full, familiar Qwerty keyboard layout. But when you turn it upright, you get the less accurate SureType keyboard, where two letters appear on each “key,” and the software tries to figure out which word you’re typing.

For example, to type “get,” you press the GH, ER and TY keys. Unfortunately, that’s also “hey.” You can see the problem. And trying to enter Web addresses or unusual last names is utterly hopeless.

Furthermore, despite having had more than a year to study the iPhone, R.I.M. has failed to exploit the virtues of an on-screen keyboard. A virtual keyboard’s keys can change, permitting you to switch languages or even alphabet systems within a single sentence. A virtual keyboard can offer canned blobs of text like “.com” and “.org” when it senses that you’re entering a Web address, or offer an @ key when addressing e-mail.

But not on the Storm.

Incredibly, the Storm even muffs simple navigation tasks. When you open a menu, the commands are too close together; even if your finger seems to be squarely on the proper item, your click often winds up activating something else in the list.

Image The Storm can display a touch-screen Qwerty keyboard, above, or SureType keys. Credit... Lucas Jackson/Reuters

To scroll a list, you’re supposed to flick your finger across the screen, just as on the iPhone. But even this simple act is head-bangingly frustrating; the phone takes far too long to figure out that you’re swiping and not just tapping. It inevitably highlights some random list item when you began to swipe, and then there’s a disorienting delay before the scrolling begins.