Hello,
Sleep as Android worked perfectly on my phone until a few months ago it stopped tracking my sleep - all graphs are flatlined completely, or almost completely. I think it coincided with the time when I switched to another phone and so I took out the memory card (the SIM card is there but disabled. I found keeping the phone charging every night was very damaging to the battery so I thought I might keep the old phone just for the purpose of running SaA.) Could this have anything to do with it? Apart from that, nothing changed, same bed, same mattress, the sensitivity settings are set on "high" and testing the sensors seems to show they are fine too. Rebooting the phone didn't help. Any ideas?