Galaxy S8 Battery Life

iceblade2097 · April 20, 2018

So I recently upgraded to an Samsung Galaxy S8 and noticed something odd right out of the box sitting in idle for most of the day my battery barely lasts through one day. I pulled up the battery meter to see which app is sucking it dry and there are only 2 apps listed that are using any amount above 0.0% per hour. I started the day at 97% and it is now 8:55PM my time and the battery is sitting at 48% after sitting idle all day at work. Is this the norm for the Galaxy S8? Also any ideas on how to slow the battery drain? I have had the phone for less than two weeks.

App Spotlight - 0.05% - came pre-installed

Boost Deals - 0.02% - came pre-installed

MegaTechPC · April 20, 2018

Biggest idling battery drains I've found on my Note 8 are Wifi and Bluetooth which I both keep off unless needed. Also make sure you are not on High Performance mode; instead choose "Optimized". Still seems like something is off with that idle battery usage. Is it a brand new phone?

iceblade2097 · May 1, 2018

On 4/20/2018 at 1:09 AM, MegaTechPC said:

Biggest idling battery drains I've found on my Note 8 are Wifi and Bluetooth which I both keep off unless needed. Also make sure you are not on High Performance mode; instead choose "Optimized". Still seems like something is off with that idle battery usage. Is it a brand new phone?

It is a brand new phone ordered directly off the Boost Mobile website. When I go into the battery options it has a section for "power saving mode" with options for "off, mid, or max". Right now I have it on the default which is "off". Is "off" the equivalent of "high performance"?.

Even on the current setting of "off" the phone will routinely put apps to sleep.

RacA · May 4, 2018

If it drains 50% battery on idle there is something wrong. This is comparable to my old xperia z1 when its battery started to go bad. (4-5 years on original battery).