Testing Crust Deep-sleep

[Luke]

I did an overnight test of deep sleep, checking periodically. It looks like I am experiencing a pretty reliable 10% drain per hour, give or take. Which matches what I had read about an approximate 10hr stand-by time.

I suspect your modem is on an 'unfortunate' band, causing the higher-than-normal drain in deep-sleep.
Indeed, the next step in battery optimizations (which should get us another 10 hrs ontop of current crust settings) will have to do with telling the modem to be on low-power bands when the phone is in suspend