iPhone 4 Firmware Updated to 4.0.1, Doesn’t Fix Antenna Issue [video]

AppleApple has released the firmware promised to fix the signal bar issues with the new iPhone 4. To make this clear, the problem, for me, seems to be a hardware issue. When I hold the iPhone in any way that covers the gap between the two antennas, I lose signal strength. I’ve demoed this in the video below. Now, does the firmware fix the problem? Let’s find out! I’ve also recorded what happens when holding the iPhone in the same way on the new firmware, 4.0.1.

Screen shot 2010-07-15 at 1.49.09 PM

As you can see in the video, the problem has not been solved by a software update. Also, the new antenna bars are ugly…


Apple claims the update “Improves the formula to determine how many bars of signal strength to display” and is compatible with iPhone 3G, iPhone 3GS and iPhone 4.

Screen shot 2010-07-15 at 1.50.02 PM

The download is 579.3 MB for iOS 4.0.1 for iPhone 4.

Screen shot 2010-07-15 at 1.50.17 PM

Did iOS 4.0.1 fix your receptions problems on iPhone 4

View Results

Loading ... Loading ...
1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)


  1. This is not the fix for reception/antenna issues. Is is only to fix the bar indicator formula.

  2. I voted “I Don’t have a iPhone 4” only because of the bad reception problem, Constant dropped Calls. I went back to ATT and Switched back to my 3Gs.. I’ll wait for version 5 of the phone.

  3. My iPhone Classic died one month ago. So I was looking forward to the new iPhone 4. After all the bad press about the reception problems and also because of the ridiculous pricing for simlock-free iPhone 4 in Germany (1100€) I bought a Samsung Galaxy S now and wait for iPhone 5 AND T-Mobile loosing the exclusivity in Germany.

  4. A software upgrade is not likely to fix a hardware condition that is limited by the laws of physics. Remember – every device that transmits is affected by a body’s proximity.

  5. I updated my Jailbroken iPhone 3G (at 3.1.3) using the method I always use:

    1) Backup the iPhone using iTunes. Backup my cydia package list using PkgBackup.

    2) “Restore” from within iTunes to official 4.0.1.

    3) Jailbreak.

    4) Restore from my backup in iTunes.

    5) Install PkgBackup and use it to restore my Cydia apps.

    So, now, I have iPhone 3G jailbroken using redsnow-0.9.5b5, running iOS 4.0.1. My biggest problem is that mobilesubstrate crashes on startup so none of my cool extensions work anymore. I had to uninstall it to get a stable iPhone (which means no Winterboard, no custom lock screens, no qTweeter, etc.)

    Bummer, but I do like the multitasking and the builtin folders. Hoping that mobilesubstrate gets fixed for the latest iOS 4 sometime soon and I can get those extensions working again.