What is baseband?

Discussion in 'Jailbreaks and iOS Hacks' started by Redjericho, Mar 24, 2012.

  1. Redjericho macrumors 6502a

    Sep 16, 2011
    What is "baseband"?

    Everybody always talks about preserving their baseband like its a bad thing to update, I'm just curious what it is.
  2. 3bs macrumors 603


    May 20, 2011
    Dublin, Ireland
    I'm not sure what it is exactly but I know that the lower your baseband the more likely you are to be able to unlock your phone so you can use it on any carrier. I don't really know much about them cause I always get my iPhones unlocked so I don't have to worry about preserving a certain baseband.

    Edit: after some quick googling I found this "iPhone baseband is essentially the cellular modem firmware that is on your iPhone. You’ll probably have heard of baseband upgrades, the purpose of these upgrades is to improve the functionality of the cellular modem and also to keep the device locked to the intended carrier (in the USA, this is AT&T).

    This is why iPhone unlocks are updated and specific to different baseband versions, since ‘hacking’ the baseband is necessary to allow the jailbreak and unlocked iPhone to utilize the cellular modem on the phone, thereby allowing call, data, and SMS transfer to occur on the device." http://osxdaily.com/2010/08/09/what-is-iphone-baseband/
  3. biohead macrumors 6502

    Jun 18, 2010
    West Drayton, UK
    Baseband = the firmware that the radio part of your phone uses.
  4. Redjericho thread starter macrumors 6502a

    Sep 16, 2011
  5. awadeee macrumors 68020


    Jan 21, 2011
    Viper City
    The baseband is what the previous poster said, the radio your iPhone uses. Basically it's better to have a lower baseband because the lower the number, the earlier they came out (usually), which means that an unlock is more likely to have been developed for the lower basebands. However, not much progress has been made on an unlock that depends on the baseband in a long time, and with the availability of unlocked iPhone models in the USA directly at Apple stores, the focus on baseband unlocking has become a bit less of a big deal.

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