Young mathematicians dive into the number line to discover decimals and how the numbers infinitely get smaller in between. They click the zoom button a few times and learn that the number line doesn't just stop at integers. Includes a...
But maybe you're not sure exactly what that means. An unlocked cell phone is one that is not tied into a certain carrier's network: It will work with more than one service provider. Most cell phones and smartphones are tiedâor lockedâto a certain cellular carrier, such as Verizon Wireless, T-Mobile, AT&T, or Sprint.
GSM Carriers (Cingular and T Mobile are the biggest two). When a GSM phone is unlocked, it will work with any active sim card. So you can put an active T Mobile card or and active Cingular card and the phone will make a call.his lock is called by several names including Sub Lock or SPC Lock or Sim Lock. Now that you know why the cell phones are locked, I will discuss how to tell if your phone is locked or unlocked. First, you must determine if your phone is a GSM phone or a CDMA phone.