this post was submitted on 03 Nov 2024
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Customers suddenly find their new phones can't make calls or send texts (www.abc.net.au)
submitted 5 days ago by fne8w2ah@lemmy.world to c/technology@lemmy.world
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[–] elvith@feddit.org 3 points 5 days ago

It's not only the frequencies, but also the modulation and the protocol ("how devices talk to each other"). Your phone may support all needed frequencies and might still not be able to "talk" to the network.