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  1. #1
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    Field Test mode DBM signal Strength on Verizon iPhone 4

    Anyone know how to get to the field test mode on a Verizon Iphone 4 as illustrated by this page?

    http://www.anandtech.com/show/4125/u...4-announcement

  2. #2
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    I have been trying to find that very thing myself, its not the same as it is on at&t iPhone.

  3. #3
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    Entering *3001#12345#* on the dial screen (then press call) might get you there. I am running iOS 4.3 Beta 3 on my at&t iPhone and it works. Not sure why Apple would switch the field test numbers for the CDMA model.

  4. #4
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    I've already tried that, doesn't work. I agree that it seems odd that Apple would change it, but looks like they did.

  5. #5
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    Darn. Well hopefully someone posts up the numbers to access field test mode soon.

  6. #6
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    More I think about it, the more I think they may not have changed it, it may just be disabled like it was when iOS 4 first launched. When I try to access field test using the *3001#12345#* method, I can see call button flicker from pressing it, but nothing happens. When I try any other combination of characters it tries to call them.

  7. #7
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    Field Test mode for Verizon Iphone 4

    I tried many different listed field test modes for other Verizon Iphones that were listed on the web with no luck.

  8. #8
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    Jailbreak and install signal to see db numbers.

  9. #9
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    Quote Originally Posted by erybovic View Post
    Anyone know how to get to the field test mode on a Verizon Iphone 4 as illustrated by this page?

    http://www.anandtech.com/show/4125/u...4-announcement
    Held normally I was getting a reading of -65 dBm on the Verizon iPhone, but in full on death grip the signal strength dropped to -83 dBm.
    That is awful. When will Apple stop designing the iPhone to look nice and be more of a functional phone. If any other company made a phone that lost 19 dB of signal when held, no carrier would ever sell it. What are Apple fans going to do when the Verizon phone drops calls and they can't blame AT&T?
    Seems like it is cool to have these in your sig?

  10. #10
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    Quote Originally Posted by mandrsn1 View Post
    That is awful. When will Apple stop designing the iPhone to look nice and be more of a functional phone. If any other company made a phone that lost 19 dB of signal when held, no carrier would ever sell it. What are Apple fans going to do when the Verizon phone drops calls and they can't blame AT&T?
    Every phone will do that, not just the iphone.

  11. #11
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    Quote Originally Posted by harlenm View Post
    Every phone will do that, not just the iphone.
    Not to the same extent. When Anantech did the iPhone4 review when it came out, the Nexus One was a "terrible" performer and it lost like 14 dB. This is significantly worse.

  12. #12
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    Quote Originally Posted by mandrsn1 View Post
    That is awful. When will Apple stop designing the iPhone to look nice and be more of a functional phone. If any other company made a phone that lost 19 dB of signal when held, no carrier would ever sell it. What are Apple fans going to do when the Verizon phone drops calls and they can't blame AT&T?
    Mine drops, but its not quite that bad, more around 12-14 dB drop, I know that is still bad though. I'm not really worried about it too much right now, it works in places that my at&t iPhone 4 is unusable and that why I switched.

  13. #13
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    Apple removed field test mode in iOS 4. Only iPhone OS 1.0.0 through 3.1.3 has it.

    http://www.howardforums.com/showthre...ield-Test-Mode

  14. #14
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    True, it was not available in iOS 4.0, but was brought back in 4.1 or 4.2, I can't remember which one.

  15. #15
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    Quote Originally Posted by cmatthews View Post
    Mine drops, but its not quite that bad, more around 12-14 dB drop, I know that is still bad though. I'm not really worried about it too much right now, it works in places that my at&t iPhone 4 is unusable and that why I switched.
    Considering that each 3dB loss represents losing HALF of the power, it doesn't take much to be "bad".

    -Frank
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    Look here for a [VZW Coverage Map] to check your area. Select 4G before hitting [Refresh Map]

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