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  1. #1
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    Lock Verizon iPhone 4 to 3G/EVDO Only mode

    Is it possible? I know it was possible on older AT&T iPhones but that method doesn't work anymore.

  2. #2
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    Bump. No one knows how to do this?

  3. #3
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    Not possible. The phone will automatically select the best available air interface, no need to override it anyways.

    PRL Interpretations
    XFF's AlphaTag software
    Cellular and PCS License Maps
    Quote Originally Posted by gpatrick900
    I am a little confused. My Verizon phone was able to roam on GSM because they used TDMA. Tell it was shutdown. The phone recognizes it as Analog. If PCS has TDMA, It could be technically be used on GSM.
    Quote Originally Posted by Tabla View Post
    Y'know, I'm used to hysterical 14-year-old ******** on the internet, but this is exceptional. Never before in human history have so many nerds hyperventilated so publicly over so little.

  4. #4
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    If the phone were locked to EV-DO, you would not be able to use the phone for voice. All incoming calls would go to voicemail.
    Earl F. Parrish

  5. #5
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    That's the reason I want to lock it to 3G. When I have the mobile hotspot turned on I don't want calls coming through and disturbing the connection.

  6. #6
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    A telephone is primarily designed for voice calls. I would expect that a data connection would be interrupted to execute the device's main functions. If data are actively being transferred, the call goes to voicemail. If there are no data being actively transferred, the data connection is paused to allow the call to go through.

  7. #7
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    Doesn't the Verizon iPhone support call forwarding? Just forward your calls someplace else while you're using the mobile hotspot.

  8. #8
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    Quote Originally Posted by efparri View Post
    A telephone is primarily designed for voice calls. I would expect that a data connection would be interrupted to execute the device's main functions. If data are actively being transferred, the call goes to voicemail. If there are no data being actively transferred, the data connection is paused to allow the call to go through.
    I've done this with multiple phones in the past, and yes the data connection is interrupted if a call comes, but ONLY if the phone is NOT locked to EVDO/3G only mode. Otherwise the call just goes straight to voicemail. The data connection would override the phone call and text messages (which normally halt the connection for a second or two). I live in a rural area and game over Xbox Live using the hotspot, which is why I would like to lock 3G sometimes.

  9. #9
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    Quote Originally Posted by quagmire View Post
    Doesn't the Verizon iPhone support call forwarding? Just forward your calls someplace else while you're using the mobile hotspot.
    I don't talk on the phone that much so I don't care about that feature. The other reason I would like to lock the phone to EVDO/3G only is to prevent the phone from switching to 1X while browsing/downloading/gaming, allowing a more reliable connection. On AT&T iPhones it was possible to do this, but I guess Apple/Verizon isn't allowing it. I did this previously with my Palm Pre, but Sprint has crappy service at my location.

  10. #10
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    Quote Originally Posted by lquarles View Post
    I don't talk on the phone that much so I don't care about that feature. The other reason I would like to lock the phone to EVDO/3G only is to prevent the phone from switching to 1X while browsing/downloading/gaming, allowing a more reliable connection.
    You would not get a more reliable connection by forcing the phone to EV-DO. It already prefers EV-DO over 1xRTT whenever possible. By restricting it to EV-DO only, it would simply give you "No Service" instead of reverting to 1xRTT when necessary. That's hardly more reliable.

    On AT&T iPhones it was possible to do this, but I guess Apple/Verizon isn't allowing it.
    That's not true. On AT&T you used to have the option of restricting the device to 2G only (versus automatic 2G/3G), but it never had an option for 3G only.

  11. #11
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    Quote Originally Posted by XFF View Post
    You would not get a more reliable connection by forcing the phone to EV-DO. It already prefers EV-DO over 1xRTT whenever possible. By restricting it to EV-DO only, it would simply give you "No Service" instead of reverting to 1xRTT when necessary. That's hardly more reliable.
    My service isn't weak enough that it would completely drop to "searching" but sometimes it's weak enough that it will connect to 1X if that signal is stronger than the EVDO, even though a weak EVDO signal yields me decent speeds. On my past phones locking EVDO with 0-2 bars never dropped it to "searching" and worked pretty consistently.



    That's not true. On AT&T you used to have the option of restricting the device to 2G only (versus automatic 2G/3G), but it never had an option for 3G only.
    On AT&T iPhones there is a file buried somewhere (I forget it's name) that only jailbroken phones can access that, after making a small edit, can/could allow the phone to lock into 3G which prevented access to 2G. That file is also on the CDMA iPhone but that process doesn't work for it.




    Sent from my iPhone using Tapatalk

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