If you’re like me, you upgraded your iPhone 3G to iOS4 as soon as it was available. Sure, multitasking wasn’t supported on the 3G, but features like app folders and integrated mailbox were too cool to pass up. Like me (and many others), maybe you also noticed that after the upgrade your iPhone 3G was slow, unresponsive, lagging and prone to app crashes. Well, I came across a tip that fixed all my performance issues. Thought I’d pass it along. Maybe it will help you, too:
- Turn off Spotlight Search: Go to Settings | General | Home Button | Spotlight Search, and uncheck everything
- Reboot your iPhone 3G: Just a normal power down and restart
- Turn Spotlight Search back on: Go back to same screen as step 1, and re-check everything you unchecked in Step 1
I’m not sure if there is corruption or a compatibility issue with the Spotlight Search database. Whatever the issue is, this did the trick for me. YMMV, but give it a try. It can’t hurt.
Let me know in the comments if it works for you, too.
UPDATE: I’ve been reading more about this issue, and wanted to add a bit of information about my upgrade process. It was not a smooth upgrade by any means. In order to get iOS 4.0 working in the first place, I had to first sync my iPhone 3G, and do a backup. Then I had to do a restore install of iOS 4.0 and sync my apps and data back to the iPhone. After that, I did a hard reboot of the 3G. I didn’t do the above steps for Spotlight Search until some time after I upgraded again to iOS 4.0.1. Some people have been saying that the restore install and/or hard reboots have improved their iPhone 3G performance. My performance definitely did not improve until after I turned Spotlight Search off and back on. However, it’s possible that the restore install and/or hard reboot played a role in fixing my phone as well.
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Hi there,
Just wanted to say thanks for passing on this tip – it appears to have helped my 3G performance since the upgrade to OS4.
Keep up the good work! And Greetings from the UK!
Andrew :)
The Spotlight change with rebooting seems to have made my 3G run so much quicker now. Hope it holds up for awhile. Thanks for posting this info!
Arg… to me it didn’t work, as slow as before!!!
what about ios4.1, is there any fix for us poor iphone3g users?
Glad it worked for you, Andrew and Tom!
Sorry you had no luck, Pasquale. My phone has the 4.0.1 firmware (not the original 4.0). If you haven’t gone to 4.0.1 yet, that may help.
Your Tip made a huge improvement for me. My issue definitely was caused by spotlight search. I mainly use spot light for Contacts, so I’m just leaving that as part of the search and will experiment if using it for mail is the trigger that caused the problem.
Very Cool. Posted on my FB.
Awesome! Thanks, Rob.
Dave,
I took your advice and so far it is making a big difference in the performance of my 3g. Thanks so very much!
I found my way here via the forums at apple.com I’m glad I followed the link and glad I tried your solution. Keep up the good work Dave.
This seems to have worked! Thanks a lot…I almost chucked my 3g into the river a few times out of frustration. Looks like you saved me $100.
Glad to hear from you about your successes, Kevin and Greg.
For anyone that isn’t having any luck after trying this fix, I added an update to this post with some relevant details about my upgrade process. Some of the tips that others are posting as fixes for this issue were steps that I took during my initial install of iOS 4.0. In the interest of getting clear information out, I posted those steps above so you can compare that to the steps you may have tried.
Again, I can’t promise that these steps will fix any performance issues you may be having, just passing on information that has helped me.
Also, some better news is on the way. Jacob Friedman at TheNextWeb.com reports that iOS 4.1 seems to permanently address the performance issues with iPhone 3G and iOS 4.0 & 4.0.1:
http://thenextweb.com/apple/2010/07/27/does-ios4-1-fix-slow-iphone3g-units-yes/
Thanks for the tip. My 3G phone has been driving me crazy since I made the upgrade. I followed you directions and the speed definitely improved. I also just read that the iOS4.1 update is supposed to fix the problem for good. Can’t wait.
Glad it helped you, Dave. I’ve also read that 4.1 fixes the issues with 3G. It’s in beta for developers, so hopefully we’ll see it soon.
Great job. Got bluetooth connectivity back. Phone acts much better.
Thanks very much
Thanks so much. You ended days of frustration! Clean fix indeed.
Thanks Bro..
Much better now.. :)
Keep rocking.
Thanks! I was going batty. The opening of apps is still an issue, but it did help to speed up the phone otherwise.
Why doesn’t Apple know about this…the employees just throw their hands up in the air and say, “Upgrade!” to which I respond, “Oh, so this is a scam to force me to upgrade!”
Your tip is very appreciated!
So glad to hear this is helping so many people out!
Malia, I can’t presume to speak for Apple, but I think it’s a much different situation for iPhone users to pass tips along to one another than it is for Apple to use something like this as their official fix. As these comments show, it’s not something that’s giving everyone 100% success and it’s still not even clear to me exactly why this fix works.
So, I can’t begrudge Apple too much for not passing along a tip that some dude wrote on the Internet that kinda might work for some people.
From what I’ve read, Apple is addressing the poor 3G performance with a permanent fix in iOS 4.1. So, they know it’s a problem and have apparently figured out a proper long-term solution, rather than my kludgy little workaround.
Thanks fo rthat Dave – only problem i had was when i followed your fix, after reboot “Spotlight Search” was no lom=nger in general menu ! So couldnt turn it back on again. I-Phone 3G still slow ?
Sorry you are still having issues, Kevin. “Spotlight Search” is under the “Home Button” menu, not “General”. I suspect you may be looking in the wrong place for it.
Thank you SO MUCH for your tip. I’ve been ready to throw my phone at the wall ever since upgrading to OS4. Thanks to your instructions everything now works properly again and at the speed I was used to with OS3. Love coming to you from the UK.
Yeah this fix worked for me too. So I have 4.0.1, 4.1 is different right? 4.1 isn’t out yet right?
Glad this fix helped you, Rina and Michael.
Yes, 4.0.1 is different than 4.1 (which is not officially released yet). There is a version 4.0.2 which just came out this week that fixes a pretty severe security flaw. I haven’t installed it yet and don’t know if it also addresses the slowness issues with iPhone 3G. I’ll try to install it tomorrow and post a follow-up.
Thanks man, this worked for me aswell. I searched the web for a solution and Im glad to of found this. Thank you!!
My problem may have been answered many times over..I am a total technophobe! I connected`my 3G to my PC to charge it, itunes opened up and offered software upgrade to version 4, so I accepted. It seems to have backed up the phone, removed the software then tried to install the new version, but then froze. All I get now is the white apple in middle of black screen, and occasionally the installation bar that only ever fills by a small amount. My PC now calls the phone “unknown” and nothing will work…tried putting it through another PC to override and re-install the software, still no luck. I would have to drive hundreds of miles to get to a store to see an Apple Genius. Any help gratefully received. Thanks
Hi Bev,
You might try a restore install of iOS 4. You can find out more about it in this blog post. There is also another article you can read about it on Apple’s website.
It’s not difficult to do, but it’s not exactly for the faint of heart. You said that you think your iPhone data was backed up before iTunes put iOS 4 on your phone. When it goes right, the phone is completely reset, the new iOS is installed and then all your settings and data are synced back to the iPhone. However, it’s impossible to know if you will lose any pictures, e-mail, music, apps, or any other data by doing a restore install. I’ve had success doing restore installs before, but there is no guarantee that a restore install will work for you. I just want to emphasize that you’d be doing the restore install at your own risk.
If you try it, please let me know how it goes.
- Dave
Thanks for the tip! I was about to throw my 3G iPhone (running iOS 4.0.2) in the trash and go with a droid on Verizon’s network! Now, I think I’ll wait for the next iPhone release and upgrade.
Thank You so much for the tip, Dave!
Cheers from Germany.
Any idea why this works?
The good news keeps flowing in from all over the world!
Just did the upgrade from 4.0.1 to 4.0.2. The install went really smooth (the smoothest since before I went to 4.0). So far, so good with no slowness issues.
@MH:
I don’t know for sure but I can give you my educated guess. Let me emphasize that this is based solely on my interpretation of the symptoms, not on any further empirical evidence or official word from Apple.
Spotlight Search allows you to do full-text searches of various data repositories on your iPhone, and it gives you results in real-time. This tells me that there is a Spotlight Search daemon that is constantly running, and updating a database index of all of the text in these areas for quick and efficient retrieval.
I think there was either new Spotlight Search daemon code, or a new database schema (or maybe both) introduced with iOS 4.0. Perhaps as part of the upgrade, the old index database was converted to a new format. Maybe some unexpected data or some small database corruptions caused an imperfect database upgrade. Something like this may have caused the daemon to eat up more and more resources to process communication with the database (thus there were fewer resources for other processes and your iPhone seemed slow).
My best guess is that turning off the full-text features (step 1) flushes out the full-text index of data, rebooting (step 2) just resets the daemon, and turning the full-text features back on (step 3) starts repopulating the database with clean data.
(Of course, if any Apple engineer out there knows the real answer, feel free to anonymously post it here…)
THANK YOU! Turned off all the spotlight stuff and left it off since I don’t use it anyway. It’s like a new phone! Did I mention THANK YOU?
-Sam
Whatever this trick did it seems to work – everything is much more responsive now – back to 3.1.x levels it seems. Especially my calendar app was unbearably slow before but it now works as you would expect.
Tryin’ out the fix, will take a few hours to see how it works I think. My slow downs were somewhat subtle, but noticeable.
Now if I can get my ATT bars back up. They seem to have settled at at one to two bars… in the out of doors! ;o( . By the way after turning off
Spotlight on my phone, my iMac seems to even be working better
LOL! Thanks for the tip.
Wow, worked great on my 4.0.2 upgraded 3G! Thank You!
Just tried your work around on my 3G running OS version 4.0.2. Working like a new phone again. Thank You!