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A is a Mototola G7 Power (Android 9)
B is Samsung Galaxy J6 (Android 9)
C is a Redmi 6A (Android 8.1) (27 Apr NOTE: I later discovered this phone was using WiFi *not* GPS for Location)
From about 07:40 (05:40 UTC) to 10:21 (08:21 UTC), they were all on a desk, inside, next to me while I worked on my computer.
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