2. Grease is your enemy.
Get yourself a good cleaning cloth immediately because you’ll need it. How do the the words ‘smear & smudge’ sound? I recommend Calotherm (www.calotherm.co.uk/branded/index.htm).

3. Fat fingers fumble.
Get used to mis-hitting keys if you’ve got stubby fingers. It’s fair to say that touchscreens don’t like chubby people.

4. Pockets get picky.
From now on your pocket holds one device only. Forget about throwing your keys, coins and assorted knick-knacks in with your new touchscreen gizmo, because that’s a recipe for disaster. Scratch, crack or worse.

5. Resolution, what resolution?
Prepare yourself for lots of repeated key presses. Stylii or fingertips will both need lots of work to select the thing you want first time. Patience is a virtue eh?

6. Forget about one hand SMS texting.
Your new screen needs two handed love for any form of complex text input, stylus or no. Live with it.

7. Screen protectors have a price.
Remember that glare washout and grease smear? Add on a screen protector sheet and watch the problems triple in intensity. Safety costs, people.

8. Trapped dirt hurts.
Bad luck if you get dirt or dust trapped underneath the screen surround. You’ll recognise the symptoms of ‘touchscreen trauma’ when it starts selecting items for you by itself.

9. It’s complex baby.
Touchscreens are very complex items. Unlike keypads there’s a lot of things that can go wrong. Deteriorating response, unruly calibration, lock outs. Be prepared for some interesting and annoying problems.

10. The eyes have it.
Touchscreens give no tactile feedback, so you’ll have to look at the screen constantly to operate your device. No fast SMS texting on the move, no quick call from a single press of the green button, no dial by touch operations at all. Enjoy.

Bonus point:

Speedy it ain’t. All that eye candy comes with a speed penalty, folks. Clicking through a keypad sequence is always going to be at least twice as fast as via a touchscreen interface. Learn to slow down and smell the icons, why doncha?