3G iOS4 resulting in sluggish performance and horribly slow calendar

Well good for you Keith, and if Apple wasn't treating Canada like some third world country and promising iPhone4 to be "coming soon" (when exactly is "soon"), I'd have done what you did. However, as you said, it's an answer, just not a good answer. Of course when I finally do get my iPhone4 it won't be bound to AT&T or any carrier for that matter, so I am willing to be a bit patient. until then though Apple, PLEASE FIX THE BUSTED CALENDAR AND LOUSY PERFORMANCE. Thanks kindly.

Ross

I noticed the same sluggishness after the upgrade. 16gb 3G. I also noticed that some of the rendering in apps isn't working correctly. I also noticed that I receive the "cannot connect to the app store" message alot, and that the connection to the app store is EXTREMELY slow. After anticipating the update for so long, I am very disappointed that I'll probably have to revert back. It seems to me its like putting Windows 7 on a 286 computer. iOS4 doesnt fit on the iPhone 3G.

Adding in my 2 cents here. Same calendar sluggishness issue after upgrade to ios4. Also mail slightly sluggish. Everything else seems to be working fine. I am very disappointed and will look for (hopefully) a solution on these forums or an Apple update....

Does not seen to be text and calendar that seem to be slow, went into Freememory on the 3 firmware was upto 35-40mb when completed but on the 4 firmware seem to be in the red lower than 2mb, when I ran the free memory went up a single 1mb but dropped. Something is eating the memory, sort it out do not want to go back now Apple.

Same Calendar/MobileMe suggishness here. Almost unusable. Also, overall performance degradation.

I can confirm this. I have 4 calendars synched to my 3G, when opening the cal app the entries show up, then disappear, then after about 5 - 10 seconds (varies) reappear.
Also typing any text in any app is really slow, much slower than with 3.1.3. With iOS4 it's like typing blindly and hope I hit the corrects keys. Scrolling in Safari or iCab mobile is sometimes not possible, sometimes I have to swipe about 4 or 5 times until I get a reaction from the application.
IOS4 in my opinion is really unusable on the 3G (I do not know how it is on the 3GS), I will try to revert to 3.1.3 and wait for my iPhone 4 to arrive.

I had to downgrade my 3G back to 3.1.3 after a week of fighting with the phone. It UI was way too choppy and slow to respond. I hope Apple resolves this issue soon, it is not like them at all to release such a troublesome OS.

Hi guys,

I think 3G is too underpowered for OS4. In normal "on the road" situations I have had to waste too much time for tasks I used to do on the fly.

I tried to restore OS 3, but even as iTunes said all went well, all I got was a few apps deleted. I am sure I backed all up alright, as the OS 4 installation kept me awake at night (it took LOOOONG).

How to restore OS 3?

Since updating my 3GS with i4.0, my email crashes within a second or two from opening and something is running because the battery runs down a lot quicker than before. Some apps appear not affected but the calendar does run slow. I would like to roll my phone OS back but, no can do.

Yes count me in, open the cal app wait a couple of seconds watch the appointment indicators disappear from the view then return, only then is the app usable. Just one of many un-responsive behaviours since the OS update, I would welcome a more responsive phone over some minor tweaks anyday. Going to the apple store is a waste of time as this is caused by firmware and all they will do is advise the usual first line reset advice, the best that can happen is that a minor fw upgrade will appear in a couple of days to resolve the major iphone 4 issue with some improved behaviour for the older generation phones.

In the meantime log a bug issue at apple.com/feedback

Same problems for me- the phone is now so slow it is almost unusable. Google Maps now crashes frequently, the SMS application is now almost unusable due to slow keyboard response, the App store has slowed considerably, Mail and Safari are only marginally slower however. I have tried hard resetting and restoring, but this only improves things for a short while. Seriously hope Apple release a fix to this shortly.

Well thanks to all for chiming in to hopefully convince Apple that this "upgrade" isn't. In the interim or perhaps forever, I have reverted to iPhone OS 3.1.3 with thanks to Lifehacker as Apple has no information on how to do this. Do be aware that unless you made the effort to copy your 3.x backups, they get hosed when the iOS4 update syncs the first full cycle so if you plan to put a functional OS on your 3G, you'll be starting fresh as the v4 backups are NOT backward compatible.

If the attached link gets removed, google Lifehacker downgrade to iPhone OS 3.1.3 and you should be able to find the page.

http://lifehacker.com/5572003/how-to-downgrade-your-iphone-3g%5Bs%5D-from-ios-4- to-ios-313


Good luck all.

JadedEye wrote:
Do be aware that unless you made the effort to copy your 3.x backups, they get hosed when the iOS4 update syncs the first full cycle so if you plan to put a functional OS on your 3G, you'll be starting fresh as the v4 backups are NOT backward compatible.

I found the required 3.1.3_Restore.ipsw file in my Trash (moved there by the iOS4 installer). Apple also erased many months of my iPhone backups, but I had copies on my Time Machine backup volume.

Since I upgraded, I notice all these annoying sluggishness issues withe the calendar - almost **unusable**

What's worse, the calendar colors, which you can't change **anywhere** have changed! So, two calendars which used to have different colors are now the same. Why the h * can't they provide a setting somewhere (even in iTunes would be OK) - this is so primitive. There's a difference between keeping things simple and making things idiotic!

- Apple really screwed up here!

PLEASE CORRECT OS4 so that it works acceptably fast on the iPhone 3G, or give us all free replacement iPhone 4s!

David