https://www.post-gazette.com/business/finance/2003/08/11/mobile-phone-number-portability-neither-cheap-nor-easy/stories/200308110012
WASHINGTON -- Come November, mobile phone customers will be able to take their numbers with them when they switch carriers.
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https://www.digitimes.com/news/a20080716PD201.html
Since Taiwan brought mobile phone number portability (NP) into force in October 2005, the cumulative volume of approved shifts from one telecom carrier to...
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