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Frequently Asked Questions

Where can I get a SIM card that will work in the country that I travel too?

globalunlock.com - Frequently Asked Questions
You can easily buy a foreign SIM Card from a local service provider in the country that you are traveling too. For a complete list of GSM network providers around the world, please click here. Many times, buying a SIM Card from an local cell phone provider is not the easiest way to get a foreign SIM. When you travel, you do not want to always have to find a cell phone store in order to buy a foreign SIM, in the case where they speak a different language, and communication is not easy.
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Will my country-specific SIM card work outside the country of origin?

GSM Service-TriBand Roaming FAQs
When you use a country-specific SIM card outside of its home country, this is known as "roaming". While this is often possible to do, there are some problems that make this undesirable for longer side-trips. First of all, the rates are much more expensive for making local and international calls and you don't get free incoming calls. Also, if you run out of credit, you rarely can purchase recharge vouchers outside of the country of origin.
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Will my country specific SIM card work when I am on my cruise?

Prepaid SIM Card Buyer's Guide
Coverage around Europe is limited to coastal areas and among many of the Greek Isles. When in port, service should be satisfactory. Please confirm whether the electrical service on the ship is European 220v or the US 110v for the charger. If coverage while away from port is critical please call us to help you with a solution. You might consider purchasing a transformer and socket adapters for your cellular phone - we carry these as well.
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How do I roam with my country-specific SIM card?

GSM Service-TriBand Roaming FAQs
Call customer service for your SIM card carrier to request or confirm that your SIM has roaming capabilities enabled. Roaming with some SIM cards may NOT be possible at all. Make sure to ask customer service if there are any variations in dialing to or from your number when roaming. (Perhaps the use of a different country code or dialing prefix, etc.) Ask customer service to provide dialing rates for making and receiving calls when roaming for all scenarios of interest.
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What is a SIM Card?

FAQ| Frequently Asked Questions On Cell Phone and Cell Phone...
Ordinary cell phone service works so that the unique serial number in your phone (its ESN) is used by the cell phone service provider to identify who you are. The wireless service 'knows' that a particular phone's serial number is your phone and knows to send phone calls to that phone when someone dials your phone number. A GSM phone is not directly linked to you. Instead, it has a removable account card, called a SIM (subscriber information module) and this SIM has a unique serial number on it.
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Does the SIMBackup works with any SIM card? Which country specific SIM cards are not compatible?

TeleAdapt : FAQ SIMBackup
We are unable to produce a list of mobile operators at this time. There have been some SIM cards that will not operate with the product. Please call technical support for the latest updates.
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Why doesn't my Lebara SIM card work?

Lebara Mobile - Home
If one of these error messages is displayed, your telephone is SIM-locked. This means that your former mobile service provider has "locked" your telephone to their network. If you have been a customer of your former mobile provider for 6 months or more, you normally have the right to receive the code free of charge in order to unlock your mobile telephone. Contact your former mobile provider.
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Will the SIM card work in my mobile phone?

Study Work and Travel
Your phone must not be SIM locked. Check this with your local phone company. In nearly all cases it will work. If it doesn't we will refund the cost of the SIM card to you. Don't forget we can send you your number prior to arrival in Australia. If you need a phone we can easily supply this.
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Can I roaming in other countries with my country-specific SIM card?

To better serve you
Some country-specific SIM cards offer roaming capabilities. However, there may be some dialing restrictions.
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Are foreigners free to travel around the country?

Frequently Asked Questions from Russia-bound Travellers
Technically, you are supposed to have your destination on your visa. Silly laws, however, are compensated by very reasonable people, from traffic cops to district bosses, who will not make obstacles provided your actions and intentions are good.
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If I travel to multiple countries, will I require more than one SIM card?

To better serve you
No, we offer the World Prepaid Travel SIM card that has access to multiple networks worldwide. There is no need to purchase multiple SIM cards when traveling to multiple countries.
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To better serve you
A SIM (Subscriber Identity Module) card is the heart of the GSM cell phone. It is a small chip, like the size of a dime. It is located behind the battery of most popular phones. See below "How to install a SIM card?" question. It carries vital information such as the phone number, the carrier that supplies it and accordingly the rates you will pay when placing or in some cases when receiving phone calls.
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O2 GSM prepaid cell phone FAQ
SIM stands for Subscriber Identity Module. A SIM card is a small "smart card" for GSM/GPRS mobile phones that contains your personal account profile as well as saves important information (i.e. network information, account services, your mobile phone number, stored telephone numbers, SMS messages and more). The SIM card must be inserted in the handset in order for it to operate.
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Customer Support | FAQs | SIM Cards
The acronym SIM means, Subscriber Identification Module. The SIM card is a chip that can be found in the back of the phones, underneath the battery. The SIM card contains all stored phonebook entries and service provider information.
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Autopage
Yes ??" it is possible to have more than one SIM card. Some people, for instance, use one in one cellular telephone when out and about and another in their car, yet have one number for both. It is also possible to have one SIM card and multiple phones, as the SIM card can be easily removed and transferred to any phone. Some phones are locked on to a particular Network, so ensure that your SIM card works in a new phone before buying it.
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Information Systems Designated Procurement: Hardware
A SIM card is the Subscriber Identity Module. It provides between 16 and 64 kb of memory which is used to provide your phone number, and to store others' phone numbers, SMS messages and other information. It can be moved from device to device (assuming the same carrier) so you can keep your phone number. You need the SIM card to send and receive email (and other data) as well as make and receive telephone calls. The SIM card is not used on all networks.
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BSNL Portal || FAQs
A SIM Card is nothing but a small pre-programmed chip, which is inserted into the mobile handset, and it contains subscriber information that facilitates interaction between the subscriber and the mobile network
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SearsConnect
A sim card, also referred to as a smart card is necessary for the operation of Global Standard for Mobile (GSM) phones. It stores your service information and can be used to store your phone book entries. The sim card comes pre-inserted and pre-activated with your new SearsConnect wireless phone.
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m0biles.com - FAQ
GSM phones use Subscriber Identity Module smart cards containing user account info. After plugging in SIM cards GSM phones become automatically programmed with user info. This means SIM cards can be programmed to display customized menus for individual services. Your SIM Card is basically the brain of any mobile device. It stores all information for you and your supplier and without one your phone wont work.
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Simply Connect - FAQ
A sim card, also referred to as a smart card, is necessary for the operation of GSM phones. It stores your service information and can be used to store your phone book entries. The sim card comes pre-inserted and pre-activated with your new SimplyConnect wireless phone.
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GSM Service-TriBand Roaming FAQs
The SIM (Subscriber Identity Module) card also known as a "smart chip" is basically the "brain" of the phone, providing cellular service as well as many other functions including call log, voice mail and SMS and GPRS (internet connection standards). SIM cards are the size of a credit card but they have a pop-out chip about the size of a postage stamp which fits into all modern GSM phones.
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Nokia Flash Reverse Electronic Engineering - FAQ: NOKIAFREE ...
A SIM card is a "Subscriber Identification Module" card, a small board containing a chip which holds your phone number and also some memory for use as a phone book or SMS bank. There are 16k and 32k SIM's around which have different sizes of memory available. A GSM-phone won't work without a SIM card, except emergency calls to 911, 112 etc... depending on countries.
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Services & Solutions
SIM stands for "Subscriber Identity Module." It is also known as a "smart card." A SIM card is the physical item that contains all necessary information for uniquely identifying a subscriber.
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Services FAQ
A SIM card is nothing but a small pre-programmed chip, which is inserted into the mobile handset, and it contains subscriber information that facilitates interaction between the subscriber and the mobile network" Any standard GSM handset. At present services will be available in 900MHz range. In future 1800MHz range will also be available in major cities / towns. No.The handset has to be procured by the customer as per his choice from the market.
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MoreMobility - FAQ
A sim card, also referred to as a smart card is necessary for the operation of GSM phones. It stores your service information and can be used to stored your phone book entries. The sim card comes pre-inserted and pre-activated with your new MoreMobility wireless phone.
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Digicell... Digital Cellular Phone Servie In Belize
The SIM is a microchip that is inserted inside the battery compartment of the GSM phones. This is an advantage from several viewpoints. The SIM contains all the necessary information such that you can use any GSM phone without complicated re-programming. Your network profile and your phone directory (among other information) are stored on the SIM itself. This adds a measure of security to the system as well as portability. To change phones, you simply place your SIM in the new phone.
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Skyphonics.com : Your PCS Source
A sim Card is a small electronic chip which contains your mobile number, phonebook, account information and provisioning. It's placed in a slot found on the cellular device, usually under the battery.
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