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Thread: Galaxy s2 wifi calling

  1. #1
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    Galaxy s2 wifi calling

    I want to buy a samsung galaxy s2 from walmart. Does it come with wifi calling? I read around and it said it had a software update to support wifi calling with a GBA sim card. What tje heck is a GBA sim card? And does one come with the phone? Because for a $100 cheaper i can get a lg optimus l9 with wifi calling, but it has a mini sim card.

  2. #2
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    Galaxy s2 wifi calling

    No idea what the gb??? SIM card is, but as to the wifi calling.
    Most TM phones can do wifi calling, my old TM phone had a icon that you had to use to wifi call through. Going through the regular diaper was normal call, if you used the other it was wifi call, it could wifi call over the phones 4g service (which was crap) or through your homes wifi if you had wifi on and cell data turned off.
    Problem with TM wifi calling is that it still counts against your min. If your monthly plan is 1000 min and you use 500 on wifi, it was 500 off your total 1000 for the month.
    Now if you have a unlimited plan this does to apply. But if you don't you need to be aware.

    GBA is Generic Bootstrap Architecture. I didn't look to far in to what it meant but it kinda looked like it was a locked sim. Like the sim was locked to the phones hardware some how.


    In mobile phones, Generic Bootstrapping Architecture (GBA) is one technology enabling the authentication of a user. This authentication is possible if the user owns a valid identity on an HLR Home Location Register or a Home Subscriber Server
    GBA is standardized at the 3GPP (http://www.3gpp.org/ftp/Specs/html-info/33220.htm) . The user authentication is instantiated by a shared secret, one in the smartcard inside the mobile phone and the other is on the HLR/HSS.
    GBA authenticates by making a network component challenge the simcard card and verify that the answer is similar by the one predicted by the HLR/HSS.
    Instead of asking the service provider to trust the BSF and relying on it for every authentication request, the BSF establishes a shared secret between the simcard card and the service provider. This shared secret is limited in time and for a specific domain.

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  3. #3
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    Quote Originally Posted by hawkeyeman View Post
    I want to buy a samsung galaxy s2 from walmart. Does it come with wifi calling?
    http://prepaid-phones.t-mobile.com/p...Contract#Specs
    Samsung Galaxy S II Prepaid Specifications: Wi-Fi Calling enabled phone.
    Quote Originally Posted by hawkeyeman View Post
    I read around and it said it had a software update to support wifi calling with a GBA sim card. What tje heck is a GBA sim card?
    http://support.t-mobile.com/docs/DOC-5059
    A GBA (Generic Bootstrapping Architecture) SIM is required to connect to the Wi-Fi Calling (WFC) / IMS network.
    Quote Originally Posted by hawkeyeman View Post
    And does one come with the phone? Because for a $100 cheaper i can get a lg optimus l9 with wifi calling, but it has a mini sim card.
    http://support.t-mobile.com/docs/DOC-5059
    A GBA SIM will come with devices that are capable of connecting to Wi-Fi Calling / IMS network.

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    Re: Galaxy s2 wifi calling

    Walmart Samsung galaxy does have wifi calling.

    Sent from my SGH-T889 using Tapatalk 2

  5. #5
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    Galaxy s2 wifi calling

    Again, most TMobile androids will/do wifi call, but if you are using the TM wifi call app it uses your min if you are on a min plan.
    If you are on unlimited it doesn't matter

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