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HTC HUA-R-E173 Where can I get a SIM card that will work internationally? The easiest way to get a SIM that works in a foreign country is in the foreign country itself. But often this is actually not the easiest way to get a foreign SIM. When you're traveling, you don't to have time to find a cell phone store, and sort out what you need, perhaps in a different language, and potentially have things go wrong. For this reason, many people choose to buy a pre-paid SIM for the country or countries they'll be traveling to before they leave home. There are several types of cards that are offered by companies worldwide. Some SIM cards come allready prefilled with airtime and cost slightly higher than the ones with zero balance.

Is one of the most popular prepaid SIM cards because of the number of countries it can operate in, low airtime rates. When you get a Mobal SIM you automatically receive your own UK based phone number that doesn't expire for as long as you keep using the card. If you buy the SIM before you leave, you have a chance to make sure you understand how it works, and will also know its phone number, which you can then conveniently give to people so they know how to contact you. What are the advantages of buying international pre-paid SIM cards? If you travel internationally, the is a cheaper alternative to roaming service. Mobal international SIM card can be used in over 160 countries around the world including USA, United Kingdom, Mexica, Italy, Israel, Australia, Brazil, Canada, China. When buying international cards there is no contract that has to be signed with a service provider, you don't have to commit to a one or two year term like with local providers.

You just buy the SIM, use it as much or as little as you like, and stop using it whenever you choose. As there are no monthly fees, international prepaid SIM can often be used in place of your regular card, however you will still be able to use your existing service and switch the SIMs whenever you want. • You pay only for shipping initially, call charges are debited from your credit card when call data is received from the networks • No monthly fees, and there never will be • No minimum usage requirements • Absolutely no additional roaming charges or hidden extras • Keep the same phone number every time you travel. My phone doesn't use a SIM card. Can it still be unlocked? All GSM phones are used with SIM card, Subscriber Identity Module, a smart card that securely stores the key identifying a mobile phone service subscriber, as well as subscription information, preferences and text messages. If you can't find such card in your phone it doesn't belong to GSM standart and might be using AMPS, D-AMPS (TDMA), CDMA, iDEN or other.

For example Verizon, Nextel and Sprint are non-GSM carriers and can not be unlocked. When I turn on my cellphone the message on the screen reads 'Insert correct SIM card'. What does it mean?

This or similar messages that appear on your handset means that your mobile phone is locked. In order for this phone to be used with a service provider other than the one it was originally associated with it has to be Unlocked. Some other messages that you can get when your cell phone is locked: Enter Subsidy Code, Contact Service Provider, Insert Correct Sim Card, Wrong Sim Card, Incorrect Sim Card, Phone Restricted, Can't Undo Restriction, Phone Locked Return For Service, Enter Unlock Code, Enter Special Code, Sim lock.