I started using Facer last week and found it really uses a lot of battery on the gear s3. I ran several days with a couple different faces and then made my own and tried it. I run my watch about 12 hours a day and have had it a year or so. I have a non-lte version, i have wifi turned off, I have everything turned off accept for the step counter, auto turn on with arm movement is also turned off. I use bluetooth to connect to my watch, I use the weather, notifications for email and texting as well as call people from it and receive calls on it. For the last year after a 12 hour day I was sitting at about 92% battery on my watch. I turn the watch off every day when I get home and am in for the night. With the update that happened around Thanksgiving I am around 83% at the end of the 12 hour day so it is really using more battery after the update. Also after the update everything was turned back on and was really killing the battery. I tried facer for a week are so and the battery was around 68% at the end of a normal day and after a week I took it off. I am back to the better battery life now of being in the mid to hi 80's at the end of the 12 hour day. For the past year I could go Sunday to Sunday turning the watch off basically running the watch from 7am to 7pm and at the end of the week I was around 25%. I can't go a week any longer so that sucks.