whitex
Well-Known Member
I have worked with phone and tablet manufactures, and now work with automotive ones. I will tell you that the automotive grade standards are more stringent, and more so the expected lifetime is significantly different. A phone lifecycle is expected to be 2-4 years, a car 10+ years. The very same chip in an automotive design is running lower CPU and RAM clock speeds to extend its life expectancy. Automotive design also are expected to work at 90 degC ambient or deep freeze (don't remember exaclty), while phone manufactures are fine with your phone not powering up at all until it's cooled off after you left it on the dashboard of your car mid summer in Athens Greece. I know of a number of phones which will simply not power on at temperatures which automotive is expected to work (perhaps not a full performance, but enough to get the car moving).
Absolutely correct. Replacing a chip in a phone is not much different than replacing one in the car. And absolutely you can do it up to automotive manufacturer's specifications - nothing magic there, perhaps some higher quality equipment with tighter tolerances than a $200 setup and audit logging (all rework temperatures and times logged and quality checked).
PS> You can get an even nicer setup for ~$4K (example here), I don't do enough rework to buy one of those, but an optical alignment is nice to have (used once once at one of my prior employer labs, that one was ~$35K and it did have Quality Assurance logging for official rework done).
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