I don't wipe it that much to avoid wearing out and scratching the screen. That's actually a cause of scratching.
If I do find a need to wipe it(like after a call), I'll use a cloth. Only wipe once every 2 weeks to look for scratches, the only reason i wipe.

I didn't go for an SP as the screen looked pretty.  Also I thought if the screen can stand it, why spend? It was a trial for the phone. As I didn't find any scratches that were able to be seen without giving me a headache, then I decided I'll stick with no protection.

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Added on June 23, 2009, 6:13 pm
I did that to other phones as well. 
There's a funny story, I played around with my friend's P1i. I didn't know it was a touchscreen. But force of habit as always made me touch an icon on the home screen, and to my surprise it worked!
One time, when operating a phone with a keypad, i didn't look like a fool. 

i thought the tube already hv the alphanumeric in landscape mode.

yeah i think depending on your phone orientation

I don't wipe it that much to avoid wearing out and scratching the screen. That's actually a cause of scratching.
If I do find a need to wipe it(like after a call), I'll use a cloth. Only wipe once every 2 weeks to look for scratches, the only reason i wipe.

I didn't go for an SP as the screen looked pretty.  Also I thought if the screen can stand it, why spend? It was a trial for the phone. As I didn't find any scratches that were able to be seen without giving me a headache, then I decided I'll stick with no protection.

@knuckleballer:
Look at the size of the video. Not the file size(MB) but the frame size. If any of the axis exceeds the phone's resolution(640x360), it won't play the video, just audio.

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Added on June 23, 2009, 6:13 pm
I did that to other phones as well. 
There's a funny story, I played around with my friend's P1i. I didn't know it was a touchscreen. But force of habit as always made me touch an icon on the home screen, and to my surprise it worked!
One time, when operating a phone with a keypad, i didn't look like a fool. 

had my eye on that, but found out that it is actually a hard cover, not soft. afraid that it might scratch the phone and accumulate dust as what the crystal casing did to my K700i before. furthermore, the bulk seemed to have some issues, the items reached the buyers in bad condition, had cracks and all. perhaps the seller would be more careful in the future but i'd rather be going for a soft cover for now

i thought the tube already hv the alphanumeric in landscape mode.

why risk it? if there is a damage u will cry.

Yes it is, we hope that thing will be replaced with auto switch next firmware. I had sent my feedback to nokia, don't you wish that feature in our tube Goth? 

I dunno about u all. My phone only with screen protector not even a scratch. Will use a macro shot with SLR to show.

I also dont understand why ppl spend so much on all the casing. If you are a person everyday drop phone u need it

Already 4 months old my tube

Waaa, what a risky trial. Maybe you can report to us time to time how your uncovered screen doing. 

  I plan my next phone will be touchscreen too, seems hard to revert back to the old norm.
I believe lot of tubers here also had same embarrassing moment when come to that kinda situation. 

I dunno about u all. My phone only with screen protector not even a scratch. Will use a macro shot with SLR to show.

I also dont understand why ppl spend so much on all the casing. If you are a person everyday drop phone u need it

Already 4 months old my tube

here