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Can you use a cingular SIM card in a prepay phone?


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Answered 2008-05-08 06:51:50

If you are a "post-paid" AT&T customer, then you should be able to just insert your SIM into the AT&T pre-paid phone. internet is not guaranteed to work. If the phone is locked to another carrier, you will have to get a Subsidy Unlock Code from the old carrier first.

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On GSM Tracfones, if the phone has been unlocked a Cingular SIM card can be used. If the phone is a CDMA phone, no SIM cards can be used.


i have a pcs phone and i have an old cingular phone i really liked it has a sim card pcs does not can it be done


Yes if your Razr is from Cingular or unlocked. You can not use a T-Mobile Razor with Cingular prepaid sim card or Globaltravellersim prepaid international sim card unless your phone is unlocked.


Well, the sim card works just like any other sim card in a CINGULAR phone, but if you have the unlock codes to your other phone, I'm sure it will work.


yes, as long as the i wireless sim card fits!



tmobile usually locks their phones, so you would have to call and get it unlocked. Cingular doesn't usually lock their phones though, so the tmobile card should work in a cingular phone.


When you have a sim card most times you just pop out your sim card and put in any other phone. So I would say yes you can as long as it's not CDMA ( no sim card ) you will be fine.


Yes: As long as you have another Cingular cellular phone, that uses the GSM technology, there is no problem* (the Apple iPhone is an exception to the rule).Your SIM card is your "phone", the single object that provides celluar service service to you. The physical phone is simply a device. Without the SIM card, it's useless.Cingular, now the New AT&T, uses the most common network in the world, called GSM (Global System for Mobile Communications), which is used in approximately 70% of the world. Therefore, essentially, you can put a Cingular SIM card into any GSM phone.** There are some stipulations that can alter this answer.


Technically speaking, a Cingular phone can be used with T-Mobile, as you only need to switch the SIM card. However, the phone may be locked to Cingular, in which you need to unlock it to be used with another GSM network.



Virgin Mobile uses CDMA, so their phones do not take SIM cards.


yes you can, all u have to do is call the company and tell them to unlock the phone then it sould work


If you are trying to use the T-Mobile phone with your Cingular SIM, and maintain your Cingular service, you will have to call T-Mobile to get a Subsidy Unlock code, and unlock the phone to be used with Cingular's service.


Yes, but make sure it's a at&t pay as you go phone. I did it when my good phone died.


You can program your son's Cingular Razor Phone to be used for your AT&T account by switching out the SIM Card with a more recent one from AT&T. This way you don't have to buy a new phone.


One way would be to synchronize hte phones to a PIM on your PC, like outlook contacts. That's how I got my contacts from by Blackberry to my Treo 700w.


No, you cannot. T-Mobile SIM cards only with T-Mobile phones. The same goes for an AT&T or Nextel SIM card, they only work for AT&T or Nextel phones, respectively.


you cant. tmobile sim cards only work in phones with tmobile service providers. however you COULD unlock the phone.


passcode for the SIM or the phone itself? Contact Cingular customer support or your owner's manual on the handset


Verizon phones do not work with SIM cards. My Blackberry curve is Verizon, which doesn't use SIM cards but there is a slot for a SIM card so I would imagine you could.


If the phone is from the same carrier then yes, it is very simple. If you were to try and put, for example, a T-Mobile SIM into a Cingular phone or vice versa, you will need to "Unlock the phone" first.


the sim card does the connection to your phone to another phone


Its possible if you rewire it correctly




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