iPhone 3g Slow after iOS4 Upgrade

8 years ago in How do I?, Troubleshooting by Brent | 2 Comments

Like most of you out there, I upgraded my iPhone to iOS4 right when it came out. And like most, have hated the upgrade because my iPhone 3g ran like crap afterwords. It was so slow, I could hardly use it at all. Crashes, mega slow, and all sorts of crappy performance issues. Nothing seemed to work. After scouring the Internet, I finally found a couple posts and threads that addressed the issue. What I gathered was that the iOS4 update needs some loving from your iPhone hardware to work right. Basically, it seems it needs to “rebuild itself” on the software side. My first attempts were to turn the phone off and back on but this didn’t work. Turns out it needs a “hard reset”, not just a power off (one would think these were basically the same things, but nope). Here’s what I did and it fixed everything:

  • Press and hold BOTH the Sleep/Wake button and the Home button
  • You will see the shut off screen. KEEP HOLDING
  • Wait for the Apple logo
  • Release the buttons
  • Wait a bit until it comes back up (mine took a couple minutes)

Bingo! It’s back to its old self with iOS4. Now I have my phone back and all is right in the world. Well… Except that I don’t have the iPhone 4 yet, but that’s another issue entirely. Hope this helps you out as well.

Edit: I guess there’s another way by doing a complete backup, reset to factory defaults and restore through iTunes, but who wants to do that? I guess if the previous method doesn’t work for you, give the old restore a try.

Have you experienced the same thing? How did you fix it? Please share!

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  • Wardy22

    The problem is when they designed the software, they didn't take the hardware into account. While you lose some of the functionality, the main thing you still get is the folders. To be honest, that is the best function of the upgrade. I have my 3GS, just because my contract isn't up yet, but as soon as it is, I will have the iPhone 4.

  • Disgruntled 3Ger

    I have been having the same problems times 100! Not only is my 3G slow, but it crashes and freezes completely at least 5 times a day!!! When it does this I can't do anything. I have even let it sit there for 2 hours and it was still frozen. The only thin I have been able to do to get it out of most of these crashes is a hard reset by holding both buttons down for 10 seconds (sometimes that doesn't even solve the problem). For the past few weeks I have been reading forums on q million different fixes to the problem. I installed apps to help free up memory, I have completely restored the phone to factory settings and wiped everything to try and fix the horrible horrible performance. If you asked me one month ago about the iphone I would have told you I would be a proud owner of one for life, but now after this mess and the thought of getting the iPhone 4 with all of it's problems sounds horrible! I NEVER thought I would say this, but I am now shopping the market for iPhone alternatives (and a bonus without AT&T).
    My beloved iphone that I have with me 24-7 and literally have my entire life on thanks to all the useful apps has now become a paper weight/ flash light to get my way to the bathroom in the middle of the night (we'll see if the next update finds a way to ruin one or both of those functions as well).

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