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.
'Unlocking' a phone means that it can be used with any SIM card/carrier-and in any country. But the unlocked handset may still display the original network's branding and may not support features of the new carrier. Most phones can be unbranded by uploading a different version of the phone's internal software or 'firmware'.