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04-11-2006, 19:27
Not sure about Travel sim. But, almost all the sims I have (All the international ones, riiing, globaslsim and yackie, for sure), came with call waiting disabled. I just enable it via the phone's menu. That's it! So give that a try.
Phones: Xiaomi Mi Mix 2, Samsung Galaxy A50, ASUS zenfone 3,
Sim cards: AT&T (Contract), 3 UK, Piranha Mobile
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