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Frequently Asked Questions

After what time SIM-card is locked?

GE Mobile - FAQ
GeMobile SIM card doesnt have an uptime (expiry date) and it wont be locked, even if its out of credit. In case of having zero balance you can receive calls from where the calls are free of charge.
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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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Do Japanese phones use a SIM card? Are they locked? Can I unlock them?

Japanese Cellular Phones FAQ
It depends. All PDC, cdmaOne and PHS phones and most CDMA2000 phones: They do not adopt a SIM card and cannot be unlocked. Most "FOMA" phones, SIM card-based CDMA2000 phones and some "SoftBank 3G" phones (e.g. 702NK/II): They cannot be unlocked so far. Some "SoftBank 3G" phones (e.g. 802SE etc.): They can be unlocked.
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How do I know if my phone is SIM locked?

Global Riiing, (GSM 900/1800), Prepaid SIM Card
You can either ask your mobile phone supplier or insert your UM+ SIM card into your phone and switch it on. If a normal screen is displayed your phone is unlocked. If the screen displays an error message such as "Enter Subsidy Code" or "Phone Restricted" or asks to enter a code other than the PIN code your phone is probably SIM locked.
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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 â?" 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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Prepaid SIM Card Buyer's Guide
The SIM (Subscriber Identification Module or Subscriber Identity Module) card - a.k.a. "smart card" - holds all of a subscriber's personal information and phone settings. In essence, it is the subscriber's authorization to use the network. It also holds the phone number, personal security key and other data necessary for the handset to function. The card can be switched from phone to phone, letting the new phone receive all calls to the subscriber's number.
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phone unlocking faq
A sim card is a small plastic card with a chip on one side which is inserted into a mobile phone (usually behind the battery) and contains network and phone number details. It is also possible to store data such as phonebooks and SMS (text) messages on the sim card. All of the essential information about a user's mobile account is held on the sim card, therefore you can use your sim card in another person's phone to make and recieve calls and messages and it will be billed to you as normal.
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What is a SIM card (SIM chip)?

FAQs
The SIM (Subscriber Identity Module) card (SIM Chip) is the brain of your handset. The SIM card is approximately the size of a credit card. The SIM chip is removed from the card holder and inserted into the back of the handset. It’s about the size of a postage stamp, with embedded circuitry on one side. When inserted into a GSM handset, the SIM when activated by Cable & Wireless facilitates mobile service on a particular GSM network.
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bMobile Handsets and Mobile Devices - Handset FAQs
The SIM (Subscriber Identity Module) card is the brain of your handset. The SIM card is approximately the size of a credit card. The SIM chip is removed from the card holder and inserted into the back of the handset. Itâ??s about the size of a postage stamp, with embedded circuitry on one side. When inserted into a GSM handset, the SIM when activated by Cable & Wireless facilitates mobile service on a particular GSM network.
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How do I add more "talk time" to my SIM card?

Frequently Asked Questions
In prepaid phone lingo, adding more talk time is known as "recharging" or "topping-up" a SIM card. Recharging a SIM card is as easy as entering a code number into the handset. Recharge voucher cards with recharge codes on them can be purchased at many convenience stores, magazine kiosks and cell phone stores. They are also often found at post offices, train stations and airports. Please note that you can only purchase recharge cards within the country of origin.
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During which time period my number / SIM card 5+ I have bought is valid?

FAQ
Validity of the number / SIM card is 60 days as of the moment of activation thereof (first outgoing call or SMS sent) or after you have credited your account last time. If you failed to credit your account within 60 days – your card will be “frozen”, making it impossible to make any outgoing calls (except for crediting account) or send SMS. However, you will be able to receive calls and SMS within 60 days.
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If the SIM card costs $50, do I get $50 worth of talk time?

GSM Service-TriBand Roaming FAQs
When you purchase the prepaid SIM card, you are buying the brain that inserts into your GSM cell phone and makes it work. There is always some credit included with new SIM cards, but the amounts vary from country to country. Additional airtime is purchased locally and usually available at or near face value. For example, a 25 Euro voucher will credit your SIM card 25 Euros. The remaining cost for the SIM card is a set-up fee which pays for service on this particular pre-paid account.
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How can I check if my mobile phone is SIM locked?

ACN Mobile
Simply insert a SIM card from a different network operator than the one currently being used into the phone. If the phone works it is unlocked.
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Are your phones sim locked? Will they work on any network?

Techoni Mobile Phones Australia - The latest mobile phones a...
Techoni sells mobile phones and PDAs that will work on any compatible network. You can use any standard sim card with a phone purchased from us. When you purchase a phone from Techoni, you are purchasing an outright phone. You are not locked into any contracts with any mobile phone carrier. You have the choice on which carrier and service you use.
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