I just bought the nRF9160 DK. How do I put it in deep sleep mode?
Are you talking about system off mode? You can put the chip in system off mode by writing 1 to the SYSTEMOFF register. Not sure if there is another way.
On page 56 of the manual, it says the current consumption is 1.4uA in the mode IMCUOFF0 (MCU off, modem off, no RAM retention, wake on GPIO and reset). How do I put it in this mode? I have the eval kit.