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User Name Thread Name Subject Posted
DaveRo Tech: Why can't 2or3 SimCards use same number? (15) RE: Tech: Why can't 2or3 SimCards use same number? 23 May 18

I wrote: Maybe some operators did offer it.
A bit of googling on howardforums reveals that singtel had a facility by 2010 called 'multisim' which allowed up to 4 SIMs with the same number. It was discontinued in 2017 in favour of something else (presumably IP based).

As I suspected, there were restrictions on roaming (because the home operator only knows which other operator last saw its SIM, not whether it's still there, or active, or moving.

Apparantly it's a facility allowed for in GSM but rarely implemented.

(UTMS in my last post should have been UMTS)

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