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I'm not going to because...

1. I don't want oversized signal bars.

2. I would like to see 5 bars occasionally. Even if it doesn't mean full signal. (according to apple :/)

I don't see any difference in the height of the bars....maybe a slight fraction, but nothing noticeable. Oh yeah, I do have one more bar than before.
 
I'm updating my iPhone 3G (downloading now).
Can't be much worse than 4.0...

Some issues I'm having with 4.0 include:
  • Dropped calls (more than ever before)
  • Sluggishness when unlocking, answering a call, using iBooks

Let's see if these things improve.
 
Nope holding out for the jailbreak...Even though they might say you can Im going to w8 to find out for sure
 
I'm waiting to see wazzup before upgrading my iPhone 4. I thought this firmware upgrade a joke when they announced it.
 
4.1 not updating...instead FAILING

Numerous posts detailing dead iPhones on 4.0.1 attempted install?
No way!

I'm waiting to see what Apple says tomorrow.



I tried to update my 4 to 4.1 and it said that it has failed, however i can restore back to 4.0 without a problem. Im confused and i will be voicing my opinion to APPLE CARE!
 
iPhone 4 update 4.1 not updating instead failing?!?!

I read on the main page where there was an update already for my i4 so...i went into iTunes to update it. Downloaded fine etc....however once in extracted and then the blue bar filled up again an error message popped up saying iPhone can not update...then it prompts you to send info to Apple etc...then says iTunes has detected an iPhone in restore mode you must restore. So I tried a restore and update it failed! Finally i went into my library and found 4.0 and it restored the phone back to normal! SOMETHING IS WRONG!!!
 
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