Noob question about SIM cardsSupport

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  1. TnIan

    TnIan Well-Known Member

    Can you get a prepaid SIM that'll work in an Optimus T? If so, will this work in Mexico and/or Canada?

    Sorry for the idiot questions; I've never had a phone that even had a SIM card, so I don't know how that stuff works.

  2. fratermus

    fratermus Well-Known Member

    For our purposes, you can think of a SIM cards as basically holding your the account/service info. They are portable from device to device.* Non-SIM phones associate the phone with your account/service.

    Any TMO sim can be used in the Optimus T. Example: you can borrow a friend's TMO sim and pop it into your phone and it will work fine immediately.

    Any GSM SIM can be used* if the Optimus T is subsidy-unlocked. You can buy an unlock code off eBay (usually less than $10) to use a ATT sim, for example.* If you are an existing TMO user and you tell them you are travelling to Mexico they may give an unlock code for free.**

    If you are going to be in Mx for a while it might be cheapest to buy a local prepaid SIM to call local Mx numbers.

    If you will have access to wifi sometimes you might skip the local SIM and use wifi:
    1. to make VOIP calls back to the US using a SIP client or GrooVe app.
    2. to use Google Voice for SMS purposes.
    3. for email
    I think that's what I'd do.

    When I go out of country I take out my US SIM because data/sms/voice calls outside the US are generally outrageously expensive. Nightmare stuff. People have racked up multi-thousand dollar bills while unintentionally roaming, particularly on data. You have been warned.

    It's late and I don't know that I'm making much sense. Perhaps someone else will chime in with better or more helpful info.

    * barring technical issues like frequency bands, etc. It is common to not have full use of another carrier's data if the frequencies are unsupported by your phone.
    ** sometimes based on length of time with the carrier
    TnIan likes this.
  3. TnIan

    TnIan Well-Known Member

    So, basically, I need to unlock the OT (if it's locked), and then I can buy local prepaid GSM SIMs when traveling?

    Perfect. That's exactly what I was wanting to know. Thanks!
  4. fratermus

    fratermus Well-Known Member

    Yup, that's it.

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