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Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

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11–20 of 35 posts

Re: Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

#11

My iPhone is currently running 3.1.2 - is it still possible to upgrade to 3.1.3 somehow?

3.1.3 is a largely unnecessary update that doesn't do much besides fixing certain jailbreak exploits. I would recommend sticking with 3.1.2 - that's what I'm doing.

http://en.wikipedia.org/wiki/IOS_version_history#3.1.2

Re: Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

#12
My 3G seems to be the same in terms of speed. iBooks has pretty lousy performance on it though.

The new mailboxes make it worth it for me.

Jailbroken? Don't enable wallpapers and multitasking. You'll find out why it isn't supported officially by Apple. Absolute shit performance if you do.

Re: Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

#14
post #12

My 3G seems to be the same in terms of speed. iBooks has pretty lousy performance on it though. The new mailboxes make it worth it for me. Jailbroken? Don't enable wallpapers and multitasking. You'll find out why it isn't supported officially by Apple. Absolute shit performance if you do.

Yeah I upgraded mainly for the new Mail features (grouped conversations and archiving for gmail). The phone isn't jailbroken, but I'm going to try a full restore and see what happens.

Re: Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

#15
I updated my 3G to iOS4 and noticed a serious performance hit along the same lines as the original poster. Rebooting the phone brought things back up to speed though, with some functions seeming snappier than they were under 3.x (Safari being the stand-out example). The phone has been running fine over the past couple of days since the reboot, so I'm not sure if there's a problem with how the upgrade is carried out on the phone that causes the slowness, or if there are some memory issues in iOS4 that will necessitate periodic rebooting of 3G models.

Re: Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

#19
post #5

My 3Gs internet stopped working after the upgrade and I have no idea how to reenable it.

My phone simply forgot the mobile internet configuration after the upgrade. Annoying, but (probably) pretty easy to look up on your carrier's website.

Re: Tell HN: My iPhone 3G is unusably slow since upgrading to iOS 4.0

#20
Your device is slow because apps are constantly triggering low-memory conditions. Memory was very tight on the 3G, even before iOS 4. This is precisely why multi-tasking isn't enabled.

Safari alone is consuming most of your device's memory, by a very large margin. It stays resident in memory when you return to the home screen, and it's one of the last apps to be killed in low-memory conditions. The problem is that much worse if you do a lot of browsing on your iPhone or iPod; Safari just grows and grows. This is why the problem appears to be fixed when you reboot your device.

Here's the tip: You can quit Safari by closing all of its tabs and then returning to the home screen. You should do this periodically; I did this whenever I was finished with a browsing session. With Safari out of the way the rest of the software on your device should run at normal speed without triggering any low-memory conditions.

My primary devices now have 256 MB of RAM instead of 128 MB, and I no longer have to worry about Safari's memory consumption.

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