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Thread: Question about some iPhone things...

  1. #1
    iPhone? More like MyPhone
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    Default Question about some iPhone things...
    Ok couple of questions:

    1.What is GSM???
    2.What is Data Roaming?
    3. Now 3G is it the internet things (use internet without ADSL) or is it the thing that makes iPhone go faster?

    Lol sorry for dumb questions....

    Edit: What is Umbrella? What does it do to the iPhone?

    Not Umbrella for rain :P
    Last edited by robben10; 2010-05-20 at 03:14 PM. Reason: Automerged Doublepost

  2. #2
    1. GSM is the TYPE of network that the iphone is running on.
    There are 2 types of cellular networks, GSM and CDMA. AT&T is GSM, which is usable glabally. CDMA (like Verizon) is only used in the US.

    2. Data roaming is using data on your phone while your outside of your carrier's (ATT for example) service area.
    So, if your in Mexico you will be "roaming" on someone else's network and if you use data (like jumping on the internet) its data roaming.

    3. 3G is a data service type....in terms of speed. It is the quickest data service ATT offers currently.
    Its like the difference between a dial-up connection at home, or DSL.

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    robben10 (2010-05-20)

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    Umbrella is a tool used to back up SHSH files for 3GS phones only. It allows 3GS users to restore their phones to a previous firmware (the version the SHSH was backed up on).

  5. #4
    iPhone? More like MyPhone
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    So do I need it if I already have SHSH saved on "Make my life easier"??


    Oh and if I use Data roaming in Syria where I currently live, would it work or is it only for AT&T
    And 3G does not work if u are not At&t???

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    Its optional for you to back SHSH files up to your comp with Umbrella. If its on Cydia youre fine. A lot of people back it up on both just to be safe.

    You cant get 3G to work if you have a AT&T phone and a diff carrier.

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