iPhone 4/S using 3G, or actually 3.5G?

Discussion in 'iPhone' started by PracticalMac, Oct 25, 2011.

  1. PracticalMac, Oct 25, 2011
    Last edited: Oct 26, 2011

    PracticalMac macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
    #1
    Reading up on the various network data bandwidths (on wiki), we have:

    • EDGE (2.75G) (type 1 MS) 236.8 kbit/s 236.8 kbit/s
    • UMTS 3G 384 kbit/s 384 kbit/s
    • EDGE (type 2 MS) 473.6 kbit/s 473.6 kbit/s
    • EDGE Evolution (type 1 MS) 1,184 kbit/s 474 kbit/s
    • EDGE Evolution (type 2 MS) 1,894 kbit/s 947 kbit/s
    • 1xEV-DO Rev. A 3.1 Mbit/s 1.8 Mbit/s
    • 3xEV-DO Rev. B 14.7 Mbit/s 5.4 Mbit/s
    • HSDPA/HSUPA (3.5G) 13.98 Mbit/s 5.760 Mbit/s
    • 4xEV-DO Enhancements (2X2 MIMO) 34.4 Mbit/s 12.4 Mbit/s
    • HSPA+ (2X2 MIMO) 42 Mbit/s 11.5 Mbit/s <- T-Mobile & AT&T uses, different frequencies
    (EV-DO is part of CDMA2000, used by Verizon and Sprint)

    It looks like iPhone is using 3.5G (when available), more specifically an upgraded 3G (3rd Generation mobile telecommunications) performance.

    So am I understanding this mash-up of terms correctly?
     
  2. VandyChem2009 macrumors 6502a

    VandyChem2009

    Joined:
    Oct 25, 2011
    Location:
    Houston, Texas
    #2
    It depends on the network. If you are on At&t than you are using the 3.5G. but if you are on Verizon or Sprint you are using 3G.
     
  3. PracticalMac thread starter macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
    #3
    Well, V and S use CDMA, and that does not seem to follow the same generation progress as the GSM (if one could even say the GSM networks have clearly defined generations)

    4x EV-DO seems to have higher bandwidth then 3.5G
     
  4. J Griz 757 macrumors regular

    J Griz 757

    Joined:
    Dec 24, 2010
    #4
    I own a 4s, so that makes me one real G. Holla.
     
  5. PracticalMac thread starter macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
    #5
    iPhone, there fore iAm :p
     
  6. PracticalMac thread starter macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
  7. FreakinEurekan macrumors 68040

    FreakinEurekan

    Joined:
    Sep 8, 2011
    Location:
    Eureka Springs, Arkansas
    #7
    3.5G and 4G are just marketing terms, they don't have any real distinct meaning in this context.

    If you have an iPhone 4S on AT&T, it can make use of AT&T's HSPA+ capability on towers that support it. AT&T markets HSPA+ as "4G" but some (pedants mostly) have decided is 3.5G, or 3.75G, or 3.9G. Whatever it is, it's faster than EDGE and HSPA - up to 14.4Mbps down.

    On T-Mobile (USA), the fastest protocol any iPhone can access is EDGE, which is <1Mbps. T-Mobile's 3G (and 3+G) frequencies are "non-standard" and the iPhones (Even the 4S) won't use them.

    If the iPhone 4S is on Verizon or Sprint, the fastest capability is EV-DO Rev A, which is firmly and universally called 3G (up to around 3Mbps down). No iPhones will use Verizon or Sprint's faster protocols (WiMax and LTE).
     
  8. PracticalMac thread starter macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
    #8
    Excellent! Thank you so much for the info, and you are right, AT&T is also moving to HSPA+, but on different frequencies.
     

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