Out of interest why did you want thermal capabilities?
I am just looking at the CAT S41 which looks quite decent:
CAT S41
5,000 mAh battery (38 hours talk time and 44 day standby time)
GLONASS, GPS, aGPS, Beidou
Waterproof Up to 2m for 60 mins
microSD (up to 2TB)
It supports "power share" but seems strange you need a proprietary cable for this. With the advent of USB power delivery spec, you should not need proprietary cables.
Also I wonder how waterproof these CAT phones are when charging via usb? I wonder if there is potential of water ingress though the USB port?
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