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There are absolutely differences in signal quality in phones, but nobody ever mentions it because the equipment needed to properly test it is extremely costly and technical.
It’s one of the things the LTT Labs are trying to set up to do. RF shielded test generator and a spectrum analyzer and generator… The spectrum analyzer by itself costs upwards of $100k USD.
So hopefully, eventually, you’ll be able to see signal quality metrics from at least one place.
Though not every fail state is going to show up. If you start seeing weird intermittent behaviour from a drive, for goodness sake find a way to back it up immediately.
My mum’s new nuc started having some issues, SMART showed perfect drive health. After trying a few things to diagnose, I rebooted to run memtest and check for bad ram, and that was the last time it ever booted into windows. Controller or something on the nvme ssd died. Far too expensive to try and repair for data recovery. Thankfully had a… Somewhat recent backup. Not as recent as we would have liked.