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iOS 4.0.1 Update for iPhone (Changes Signal Bars); iOS 3.2.1 for iPad (Fixes Wi-Fi) Released

By 22 comments Last updated November 17, 2011

UPDATE:

iOS 4.0.1 Resolves iPhone 4 Proximity Sensor Issue for Many Users

Error 9 and Other Problems Updating iPhones to iOS 4.0.1

iOS 4.0.1 Fixes Microsoft Exchange Issues

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Apple has released iOS 4.0.1 for the iPhone 3G, iPhone 3GS and iPhone 4, and iOS 3.2.1 for the iPad.

Release notes for iOS 4.0.1 state that the update “contains bug fixes and improvements,” which include the promised:

“improves the formula to determine how many bars of signal strength to display.”

iOS 3.2.1 for iPad, meanwhile, lists these enhancements:

  • Improved Wi-Fi connectivity (addressing an issue AppleToolbox covered extensively)
  • Fixed an issue that could prevent copy and paste of single-page PDF attachments in Mail
  • Addressed an issue that could cause video playback to freeze
  • Improved reliability of video-out when using iPad Dock Connector to VGA Adapter
  • Added Bing as an option for Safari’s search field

The new releases can be installed by connecting your iPhone or iPad to your computer, selecting the device from the left-hand pane in iTunes, then clicking “check for update.”

Back up your device in iTunes before applying the update. Some users have reported loss of contacts or other data during the update process.

No word yet on other specific bug fixes in this release. Stay tuned…

Notice any differences after the update? Let us know at [email protected].

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Show 22 Comments

  2. Stephen says

    Had the same prob after update phone was dead. I went to at&t, they changed my sim card now all is GREAT. Give a try its free.

    Reply

  3. waleed says

    hello
    i have 3gs iphone which i recently update my software to 4.1 but no i dont get any signal it was working perfectly before now what shall i do

    Reply

  4. Robin says

    My iphone is useless since the new update. it was great before now no signal. Missing calls etc, Come on apple 🙁 How can i undo the update? and get back on mobile. grr!

    Reply

  6. Tammy says

    Same problem after the update. All I get is “no signal” or “searching” which drains my battery. If I do get a signal it is 1 bar, while the iphone my friend is using next to me is 5 bars and no problems. This is ridiculous. Called AT&T, they said it was a software problem that I have to take up with apple?!?!?

    Reply

  7. Neil says

    I’ve just updated from 3.2 to 4.0.2. I’m now receiving very little signal and very often its saying no service. Any ideas on how to restore 3.2 without sshh files.

    Thanks

    Reply

  8. CptNeil says

    Before the update was getting full bars all the time, I noticed my signals are now always at 1. But when I make a phone call, bars raise to 5! When the call is over, bars goes back to 1. I sometimes don’t get the wifi signal when there’s wifi.

    Please fix! Thanks!

    Reply

  9. Fredrik (Norway Telenor) says

    I couldn’t make the iPhone 3G work so I bought a iPhone 4 a couple of days ago and sent the old 3G to service. Luckily we have 2 years of warranty in Norway 🙂

    Reply

  10. Sam says

    first month of having the iphone 4 software on it was fine, no problems, but recently i cant send txts, constantly have no signal, took a hour today to get signal in my room, was trying to make a phone call, with two bars of signal, and it still wasnt working.

    Reply

  11. Jason says

    I don’t think it is the updates causing the dropped called and no signal bars I think it’s the network cause I haunt up graded and same thing is yapping to me

    Reply

  14. Fredrik (Norway/TELENOR) says

    After updating my iPhone 3G to iOS 4.0.1 it tends too lose the signal all the time and I am left with “No Service”. It is really annoying because I cant make phonecalls or send/recive messages. I cant figure how to sucsessfully downgrade to iOS4.0 🙁 Any ID?

    Reply

  15. Ricardo says

    i have a 3gs running on 4.0.1 and i think its great no problems with signal bars at all!!!
    really happy with the upgrade.

    Reply

  16. Javier says

    after the update 4.0.1 my iphone 3gs have poor signal in places where the signal was very good. I´ve also difficulties to make and receive calls all the time. The upgrade is BAD. It does not work at all. Guys do someting to correct this NOW. Is really stupid to release an update to worsen things !!!

    Reply

  17. hoss says

    i did the update 4.0.1 on my 3gs and i have poor signal, one bar at my house i used to have 5 bars, and i get dropped calls all the time, i thought atnt was problem so it turns out everyone is having same problem with this stupid update… apple do something about this, its bull shit. my friend has a 3g phone with old update gets full bars at my house, so he did the update 4.0.1 to see what happens and hes phone got 1 bar he lost reception. so thats proof that the new update is BAD!!!!

    Reply

  18. Linda Newcomb says

    The 4.0.1 for the iPhone 3G is terrible. I wish I had never done it and tell everyone not to do it. I have lost most of carrier signal, which is AT&T. My Microsoft Outlook will not update most of the time without turning the phone on and off numerous times, and now that is not even working. iPhone is terrible slow, just horrible. You guys need to do something.

    Reply

  19. lee smith says

    ever since this new update i have had no service most of the time and signal i did get is about 1 bar please help dudes

    Reply

  21. Ibrahim says

    Before iOS 4.0.1 on my 3G, the carrier signal strength was full, now it is missing at least one bar all the times.

    Reply

  22. Bill Baker says

    experiencing lots of dropped calls and poor signal quality after the update to 4.0.1. have ruled out any hardware problems.

    Reply