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Support Unlocked Phone: Tethering does not work internationally with other SIM cards

Discussion in 'Android Devices' started by EdwardMiller, Mar 11, 2012.

  1. EdwardMiller

    EdwardMiller New Member
    Thread Starter

    Mar 11, 2012
    Even though T-Mobile "Unlocked" my Samsung Galaxy S2 and i pay the tethering charge in the US (which works fine), when i go to other countries and use their SIM cards, i cannot tether. When i try i get an error that says "...Invalid SIM"

    In all three countries: Australia (Telstra and Vodaphone), England (3) and the Bahamas (BTC) the phone calls, access to the internet at 3g and 4G speeds, emails and texts all work just fine. But when i try to tether, the blue icon for tethering flashes quickly and then gives and error "...Invalid SIM" If i try these same SIMs on my Nexus One, they all work and enable all communication functions including tethering.

    I called T-Mobile and they say that they gave me an unlock code that works for the whole phone and they can do no more. I called Samsung and they say that T-Mobile has possibly put in a change to the code to control tethering and charge for it. This bit of code stops me from using the tethering internationally. Then i called back T-Mobile and they say the only change they made was to add some bloatware and nothing more. With this run around, i am stuck.

    What can i do to enable tethering with my many international SIM cards on this fantastic phone?


  2. ZeroOne

    ZeroOne Guest

    i wonder if rooted tethers could help or pdanet,easytether? i am curious if you find out please post and tell others how you overcame this situation thanks.
  3. fuzzuy

    fuzzuy Member

    Nov 21, 2009
    It is not TMobile or samsung it the service provider you are using it i know for Englad (3) for sure that they want to sell you there own hardware so that's why they don't allow tethering, and i am sure that will be the case for the others also as service providers has ability to snif about your usage and they can tell that you are using a phone or using it as a WIFI hotspot, which they don't like it :)

    Any one else can correct me here if i am wrong :)
  4. davidtheprof

    davidtheprof Active Member

    Oct 29, 2010
    I've had no problem tethering with foreign sim cards with the Samsung Vibrant (Galaxy S)- and didn't need to pay monthly charge!
    have not yet tried with new SII

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