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International Cell phone use

Hello there,
I hope I can find an expert for this problem I am having. I plan to travel to Germany very soon. I just found out that my current cell phone does not have german capabilities, unlike my old phone which I used on my last visit a few years ago.
So, my question is, Can I take my old phone which used to be with Cingular and still has the Cingular Sim Card in it, take it to Germany and buy a german Sim card over there, or even over here on the internet ( I found some sim card sellers who claim world wide capability ) and then in Germany just start making phone calls ??
Maybe my train of thought is wrong but would that work ??
I think something about unlocked or locked comes to mind, would my old phone if the service with Cingular has been disconnected 2 years ago work with a different sim card or is it still locked ??
thanks for your time, hope I can get this figured out !!

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In reply to: International Cell phone use

I use ATT and travel internationally, so I am familiar with what you need.

If the old phone worked last time, then it does have the correct frequency bands for starters. However, if you don't remember using a pre-paid SIM last time, you will want to know if it's unlocked. If you are already 100% certain of this, great. You can go over there and purchase a pre-paid SIM at the kiosk and enjoy. Otherwise, the best way to determine if it's unlocked is to borrow a friends T-Mobile SIM card and test it out on the phone in question. If you can place a call with a T-Mo SIM on your old phone, this means it's unlocked. If not, simply call ATT's international desk for this service. 1-(916)-843-4685 Typically, they email you what is called a subsidy unlock code for your specific handset (IMEI number is required from phone). This can take up to 7-10 days, but I've received them for very new phones right over the phone and also overnight via email. YMMV.

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International cell phone use

In reply to: sure

Hi Sure,
thanks so much for the great info, so I remember using the phone last trip no problem, my provider back then was Cingular and now I have sprint, I don't know if ATT will still provide their service to me regarding the unlocking of the phone since I switched away from them, but I can try. My husband has a nextel phone with a sim card and I can try to see if that card will work on my old phone, correct? ?
Meanwhile I will try to call ATT with the number you provided !!!
Thanks again so much for your time !!!

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