In the United States, there are 130 million subscribers. These phones become obsolete more quickly than in other countries because Americans discard them either because they want to be able to download new ring tones or perhaps they want a video phone. Another reason they are discarded is the new law that allows one to keep their phone number and choose another carrier. We may be able to keep our phone number but the new carrier often will not allow us to use our phone because the embedded chip placed in the phone by the previous carrier will not function...

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