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"While Apple does not currently explicitly list Turkey as a supported country, many users report being able to use their watch while roaming in non-supported countries.
Turkey’s carriers use the 900, 1800 and 2600 MHz LTE bands and the 2100 MHz UTMS band. All of these bands work with the Apple Watch 3 models A1889 and A1891. If roaming works on their iPhone, it would likely work on their watch unless Apple has explicitly disabled the watch itself from doing so (I’ve seen no indication they do this, and user reports to the contrary in fact). LTE is LTE after all and doesn’t care what your device is provided it conforms with the standard.
Another possibility is that Khashoggi simply made a phone call from the watch which was recorded by the other party. This removes the dependency on a data connection altogether.
What makes more sense here? That Turkey has decided to effectively admit to widespread bugging of the SA embassy (and likely all embassies for that matter)? Or that they were provided a copy of audio by Khashoggi’s fiancée? It’s far from certain, but ruling out the most likely scenario based on a support article alone seems hasty."
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Food for thought.