Is A New Sim Card Better Than An Old One The Unlocked GSM Cell Phones

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The Unlocked GSM Cell Phones

All these days, many types of wireless communication, digital devices are already in the big market. It is really amazing, all types and styles and different colors of mobiles with a high tech fit in the best GSM mobile phone brands. GSM mobile phones are designed to work with any service provider. In theory, all you need to do is change the SIM card in the phone. But some service providers ‘lock’ the phone they sell you.

Many mobile network operators lock a mobile phone to their network, making sure you can’t pick up and leave them whenever you feel like it. They do this by locking your phone’s SIM card to the phone itself, so no other SIM will work in it. But what if you want to switch networks? What if you leave your old contract and go to a shiny new (and cheaper!) operator, or simply switch SIM cards to use a local operator’s network when traveling abroad?

The phones are naturally unlocked

When originally manufactured, all GSM mobile phones are unlocked. That is, they can be used with any SIM card from any mobile phone service provider – always assuming, of course, that the mobile phone service provider has compatible GSM service in the same frequency bands in which you can the phone works. Most mobile phone service providers electronically ‘lock’ the phone so that it can only be used with their service. There are obvious reasons why they choose to do this – in particular, to force you to pay what are usually very high roaming charges when you take your phone off their network and use it elsewhere in the world.

Fortunately, this closure is reversible. With some phones, it’s possible to simply enter an unlock passcode into the phone and it unlocks instantly. Other phones must be wired up to a separate unlocking data terminal.

What is GSM? Is it different from normal cell phone service? How can I know if I have GSM or not?

GSM is a type of digital mobile phone service. The most common type of digital cell phone service in the US is CDMA, but almost every other country in the world uses GSM primarily or exclusively. For you as the user of your phone, there is no difference at all between using a phone on a CDMA system or a phone on a GSM system. Unfortunately, the two different systems are not compatible with each other.

Today, mobile phones become more innovative by applying technologically advanced applications such as GPS or Global Positioning System. Equipped with this remarkable device, mobile phones can now function beyond their basic functions. With the GPS system, mobile phones can be used as a tracking device that enables people to find the right places or even hunt a relative or friend to their exact location.

GPS or Global Positioning System is a device used to determine the specific location of people anywhere on earth. The central hub of the system depends on “24 satellites” that orbit the earth twice a day. The identification of certain locations was made possible using fully functional equipment that includes a variety of receivers and satellites.

Some mobile phones are already unlocked and some are not when you buy them from stores. You don’t have to worry if your cell phones are unlocked, many sites offer you free tips on how to unlock it and you can also buy a new cell phone for some stores that offer unlocked cell phones.

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