Which cell phone provider has the fastest internet?

shorts

Member
Dec 3, 2012
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I'm looking to make/receive calls with my US number using Talkatone on my Android phone, and I've tried both Claro and Orange in Santiago and with both of them the calls are very bad and the other side can't hear complete sentences. I've run speedtests and both get around 1mbps upload and 3mbps download, which is more than enough, yet somehow the calls are very bad. I've tried using skype to make calls and those are even worse.

Any advice on whether there's a better/faster cell carrier?