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  • Verizon iPhone Has Dual-Mode GSM/CDMA Chip


    Separate teardowns of the Verizon iPhone 4 done today by iFixit and 9to5Mac have both determined that the new phone's cellular modem is compatible with both GSM and CDMA, lending credence to rumors that future iPhones will be dual-mode "world phones," with the same device able to work on networks using either cellular standard. The Verizon phone cannot be used on a GSM network, as it lacks a SIM card, but the inclusion of this chip suggests that Apple may move away from separate GSM and CDMA product lines as soon as the next iPad.

    The Qualcomm MDM6600 "Gobi" chip found inside Verizon's iPhone 4 - the same one that's in Motorola's Droid Pro world phone - supports both GSM HSPA+ with data rates up to 14.4 Mb/s and CDMA's 1xEV-DO rev. B with data rates up to 4.9 Mb/s (though Verizon's network currently only uses rev. A which maxes out at 3.1 Mb/s). The Verizon phone will only work on CDMA systems not only due to the lack of a SIM but also because of the antennas: as iFixit notes, "this phone supports two cellular frequency bands, while Apple supports five bands in the GSM version."

    Another minor change noted was the moved and redesigned vibrator which, as iFixit found, has a "quieter, softer feel, and makes a better sound when on a table." Apparently this is a linear vibrator, rather than the counterweighted rotating electric motor used in the GSM iPhone 4.

    Source: MacRumors, image via iFixit
    This article was originally published in forum thread: Verizon iPhone Has Dual-Mode GSM/CDMA Chip started by Paul Daniel Ash View original post
    Comments 29 Comments
    1. Norb's Avatar
      Norb -
      I kind of figured as much. I can't imagine Apple would want to keep releasing two of each product just for the sake of being able to be on gsm and cdma.
    1. feidhlim1986's Avatar
      feidhlim1986 -
      Quote Originally Posted by Norb View Post
      I kind of figured as much. I can't imagine Apple would want to keep releasing two of each product just for the sake of being able to be on gsm and cdma.
      They will still have to make a version with a SIM card tray and slot and a version without. Until the talked about built-in SIM, but I don't see iDevices having that this year and hopefully never.
    1. santacruzlocal's Avatar
      santacruzlocal -
      Lets see what kind of hacks come out of that !!!
    1. delusion950's Avatar
      delusion950 -
      this is awsome dual chip. its good to know it could be unlocked.
    1. EskimoRuler's Avatar
      EskimoRuler -
      Quote Originally Posted by feidhlim1986 View Post
      They will still have to make a version with a SIM card tray and slot and a version without. Until the talked about built-in SIM, but I don't see iDevices having that this year and hopefully never.
      Can it have a sim tray even though it would be on verizon and if on AT&T it would use it?
    1. sLevin1fo's Avatar
      sLevin1fo -
      Apparently they made it on the pre order. Lots of Verizon customers are coming in w/ iPhone 4's today. Yes, I work for Verizon Wireless.
    1. feidhlim1986's Avatar
      feidhlim1986 -
      Quote Originally Posted by EskimoRuler View Post
      Can it have a sim tray even though it would be on verizon and if on AT&T it would use it?
      It could. Apple are OCD with detail and I can see them just making a separate casing for Verizon models without an opening for a SIM
    1. Norb's Avatar
      Norb -
      Quote Originally Posted by feidhlim1986 View Post
      It could. Apple are OCD with detail and I can see them just making a separate casing for Verizon models without an opening for a SIM
      I personally would not mind opening my phones back cover to install a sim but I dunno how that goes with warranty and so on. Also with things like getting your phone online, they would have to preinstall it (I don't know how the process works as of now).
    1. Lombardo Joe's Avatar
      Lombardo Joe -
      When I was on Verizon my Blackberry Tour had a slot in the back for a SIM, even though I used a CDMA network. Granted, Apple might not choose to do so, but it's possible. Wouldn't it be more cost effective to just have one model?
    1. steve-z17's Avatar
      steve-z17 -
      Interesting..
    1. whereswaldo's Avatar
      whereswaldo -
      It would be a lot better for apple and the consumer if they didn't have to make two iphones with two different cases
    1. thechronic's Avatar
      thechronic -
      What is the difference between the new linear vibrator, and the old rotating electric motor counter weight? Does it only oscillate on one plane?
    1. StealthBravo's Avatar
      StealthBravo -
      I guess so. Interesting
    1. jwil736's Avatar
      jwil736 -
      Wouldn't the CDMA/gsm combo chip cost more than just a CDMA? I couldn't see apple paying for hardware that they do not intend on using...
    1. mikerlx's Avatar
      mikerlx -
      Quote Originally Posted by Norb View Post
      I personally would not mind opening my phones back cover to install a sim but I dunno how that goes with warranty and so on. Also with things like getting your phone online, they would have to preinstall it (I don't know how the process works as of now).
      Remove the 2 small screws slide up half an inch and iPhone 4 back comes off easy. No warranty void.
    1. Italia411's Avatar
      Italia411 -
      Quote Originally Posted by Lombardo Joe View Post
      When I was on Verizon my Blackberry Tour had a slot in the back for a SIM, even though I used a CDMA network. Granted, Apple might not choose to do so, but it's possible. Wouldn't it be more cost effective to just have one model?
      I work for Att and I could swear as well Verizon's blackberry storm was unlock-able to Att's gsm network. It had a sim slot.
    1. Mrteacup's Avatar
      Mrteacup -
      I don't know if I understand but I hope apple stays with AT&T also very unlikely but hey I can think what I want
    1. Italia411's Avatar
      Italia411 -
      Quote Originally Posted by DRFP View Post
      So where are you going to get the special Micro sim? Or are all going to the micro sim?
      The storm had a normal sim card. I think the micro sim was apples bright idea to try and detour unlocking last I knew the iPhone 4 is the only phone in the world with micro sim.
    1. Italia411's Avatar
      Italia411 -
      Quote Originally Posted by Italia411 View Post
      The storm had a normal sim card. I think the micro sim was apples bright idea to try and detour unlocking last I knew the iPhone 4 is the only phone in the world with micro sim.
      As long as u have Att u can get micro sims. eBay works too.
    1. GenesisDH's Avatar
      GenesisDH -
      Quote Originally Posted by Norb View Post
      I personally would not mind opening my phones back cover to install a sim but I dunno how that goes with warranty and so on. Also with things like getting your phone online, they would have to preinstall it (I don't know how the process works as of now).
      I wouldn't be surprised if they intentionally remove any hardware that connects to the SIM's metal contact surface/chip.
      Quote Originally Posted by DRFP View Post
      Yes but will they? Or will the "CDMA" version come as not allow GSM? Hmm...........that would be stupid but par for Apple
      I can see Apple having a GSM/WCDMA, CDMA-only, and a CDMA/GSM/WCDMA 'world' version to sell, all using the same hardware but differentiated by model IDs and software. The 'world' version selling for a bit more than the GSM or CDMA-only versions, just like the applicable versions of the Droid 2.