A Global System for Mobile Communication Subscriber Identity Module, or GSM SIM card, is a SIM card that uses the GSM network. Having this card in an unlocked cell phone while using the right frequency allows a cell phone user to use his cell phone in different countries around the world. The GSM network is the network used by most countries in the world, allowing mobile users to carry their phones from country to country. This network is not the primary network used in countries such as the United States, which is why many US residents have difficulty using their phones abroad.
In order to use a GSM SIM card, a user will need an unlocked telephone, that is, a telephone capable of using SIM cards from different telephone carriers that use the GSM network and operate on the receiving country frequency. In many European countries, the frequency is 900 MHz or 1800 MHz. A phone that uses the right frequency is important because even if a phone can be used in the GSM network, if it is not on the right frequency, it still will not work. When a user has an unlocked phone that wants to work on the GSM network, and the correct frequency, he can use the GSM SIM card. This card allows the user to use the same phone number internationally, no matter which country he is in.
Having a GSM SIM card allows a person to use the same mobile phone in different countries instead of having to buy a new SIM card or phone when traveling internationally. This is ideal for those who travel frequently or want to be able to use the phone while on vacation. Since the SIM card contains the user’s phone number and information, the chip can also be used on another person’s international phone while still billing the owner of the SIM card. This allows a person to either buy a phone from their own or hire one from a suitable carrier.
If a person does not have the current phone for a GSM SIM card, it is possible to rent an international telephone. This is possible because he can put the chip in different phones and use them in different countries. The information holds with the SIM card so the user can only pay a fee to use a compatible phone of his choice while traveling in another country. This allows him to use the phone without paying his domestic carrier’s roaming charges. Renting a phone allows someone to get a phone when they do not want or cannot use his phone abroad.
- A phone that works with a GSM SIM card.
- An unlocked phone is required to use a GSM SIM card.
- Some SIM cards are packed inside a larger card to protect them from damage before use.
- A GSM SIM card.