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01-03-2009, 21:53
Unfortunately that's just one of the disadvantages of these international sims that use callback. The callback does not always work in all the countries they listed. It may depend on the operator you are roaming on
Phones: Xiaomi Mi Mix 2, Samsung Galaxy A50, ASUS zenfone 3,
Sim cards: AT&T (Contract), 3 UK, Piranha Mobile
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