Even better, an unlocked GSM phone allows you to switch out the Subscriber Identity Module (SIM) card. -- the internal chip that stores your phone number and account settings -- for a local phone number. Outside of the United States, most GSM phones come unlocked, but inside the country, you need ask your carrier for a special code. So if you know you're going to be spending the next four months in Botswana, you can spend $20 for a local SIM card instead of paying hundreds of dollars in international roaming fees.
The memory on your mobile phone determines how much data you can store on it. Some phones have a predetermined memory capability that is built into the phone. You cannot change the memory amount on these phones, so be careful when you pick a phone that it has the memory amount you want. Internal memory starts at 1GB. A phone with expandable memory, on the other hand, uses a chip for memory. This means that you can replace the memory chip on your phone with a chip that his more memory later.
Why: Save $999.99 on a brand new (and one of newest) iPhone! The regular price of this phone on Sprint's Flex Lease is $41.67/month, but with Sprint's limited time offer, you'll receive credits on your bill each month making this phone completely free. You'll also have the opportunity to upgrade to a new iPhone after 12 months on this 18-month lease plan.
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