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A comment on The Most Expensive Lesson of My Life: Details of SIM Port Hack. Parent comment

Re:The Most Expensive Lesson of My Life: Details of SIM Port... by SmellyGeekBoy on Wednesday May 22, 2019 @04:30AM (#19979108)
It's been a while since I ported a number but the last time I did it took days here in the UK too. I just assumed it was typical inefficiency by the mobile operators rather than a security thing, however.
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Re:The Most Expensive Lesson of My Life: Details of SIM Port... by amaccuish on Thursday May 23, 2019 @08:48PM (#19997471)
It takes days in the UK because we have a crappy system where instead of having a central register of number -> provider, calls are still routed to a ported number via the "donor" network, i.e. the network the number range belongs. So I just ported from O2 to EE, and my calls and texts will still go through o2, and then sent on to EE. Not very efficient.
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