5 sec delay after pressing home button

If this behavior started recently vs. from the day you got the phone I recommend you power it down completely (button on the top) and back on again. If that does not resolve the problem do a Reset per

http://www.apple.com/support/iphone/troubleshooting/phone/#

If you had this 5 sec delay when you first used the phone, take it to Apple.

Phil

I am experiencing the same problem. I've just started a discussion about this three days ago:

http://discussions.apple.com/thread.jspa?threadID=2143230&tstart=0

Are you having troubles connecting to wireless networks as well?

OK, looks like more ppl are having this problem. Just googled a bit and found other threads on different forums as well. Since it happens on original 3G phones too I think it's a software issue that hopefully will be fixed in 3.1.

And yes, you're right - neither resetting or restoring does seem to fix this.

lukin22 wrote:
OK, looks like more ppl are having this problem. Just googled a bit and found other threads on different forums as well. Since it happens on original 3G phones too I think it's a software issue that hopefully will be fixed in 3.1.

I suspect that's wishful thinking, since in reality very few are having this problem; you're just not hearing from those without this delay because this forum is like an ER and who goes there without being ill or injured.

My advice is to take the iPhone to Apple and have them check it out. What you are seeing is not normal for an iPhone with OS 3.0.1 and is unlikely to go away when you install 3.1

Phil

I posted this on another thread, but here's the fix;

I ended up calling Apple again today and they told me that I wasn't supposed to restore from backup but just start all over again as a new phone when I do the factory restore
Be sure to back up your photos on your camera roll as they will be deleted.
You can resync everything else but apps will have to be re-downloaded because they'll be gone too. Also notes, lists etc.

Apple's thinking is there might be errors in the backup and by using it to resync you're just loading the problem back on to your phone.

I am having the same issue with 3.1 on my iPhone. It seems like it is searching for the WiFi connection after pushing the home button from a sleep state. Once connected, it allows me to enter my passcode. The delay seems to be related to negotiating the network connections.

Mine just kept searching for the networks. Never got to the login.
I don't think it's a 3.1 deal.
These phones are computers and they get buggy sometimes. The best way to fix it is to restore to factory. Gets rid of the errors and whatnot.
Call Apple, they'll give you the same advice.

I don't have a 5 second delay, but what I noticed is, when pressing the home button, it's slower to wake up the phone than pressing the very top botton on the phone. ANyone notice this? The top button is instant, whereas the home button takes about 1 second.

So I did a factory restore on iPhone 3GS last night and have not experienced any of the delays or sluggish screen responses so far. I hope this approach lasts. The unfortunate piece is the amount of time to input all of my lost settings.

I'll give 3.1 a try and if it doesn't help I'll still can get in touch with Apple. It's however strange that this started with software 3.0 both on the 3G and 3GS and hasn't been there before 3.0.