S8 plus battery drain idle mode

[sully]

I've owned 3 GS8s and all of them drain heavily over night after 2 months of usage. device manager does not show me any usefull information. I have tried apps such as greenify to force doze apps but I don't get any result. I've been on Android for 8 years and know my way around it well but this battery drain bugs the heck out of me. it's not just my phone. A couple of my friends own the Gs8 and complain of terrible SOT and idle times. (3 hrs sot). Linus Tech tips even had a video on this where he too and his colleagues could not find the issue. https://youtu.be/n46s_iF_IV4

does anyone know the fix to this cause I really love my gs8 but I need it to stop draining in idle and have alreast a 5 hour sot

[Shaggyskunk1BLM]

BBS & GSam Battery Monitor are useful for tracking down what's going on - On my S8+ I easily have 5 to 7 SOT - I've Factory Reset after Oreo 8.0 Update - I prevent apps from constantly refreshing (unless I want them to) - I use BK Manager to Disable Carrier Bloat - You can also use Adhell 3 or notSABS to accomplish the same thing - I do NOT use FB - Instagram etc as they are known battery hogs (aside from stealing and SELLING your privacy) 🐧

[sully]

thank you , I'll try out gsam again and see whats going on. I do use Instagram etc but I've disabled the background usage for both. I hope I get 5 to 7 after this . my issue is mainly background drainage anyways :)

[sully]

I lost 28 percent in a span of 8 hours while sleeping

[RichMan1]

same too, I get 6-8 hours SOT on my S8+. Maybe you bought refurbished phones or your phones have manufacturing problems. Go to ORIGINAL Samsung service center and change the battery.

[sully]

6 to 8 hours sound like a dream.

[Hny]

I had a similar problem with my note 8 since i bought it. It sucks almost 10-17% of battery overnight with the AOD turned off from 11-6am, connected to wifi & data is turned on with full bars of my network. I m in canada with freedom provider. At first i thought it was the handset issue so i changed it with the new 1 but it was not. I tried reaching samsung & was told to do a factory reset, clear cache & also tried safe mode but nothing worked. I was frustrated with this issue as i dont use my cell phone regularly & it should easily take me through the day. Later i tried ultra power saving mode & 'vallah', it worked. I left my cell at 6% at night & it was exactly the same by morning. But no one wana switch back & forth on it's power saving modes. Samsung should really need to work on improving the battery life for its customers

[EnZ143PoGi]

if you keep your wifi and mobile data on at the same time and have auto-connect to mobile data on if wifi is slow, the hit on battery is astronomical as it always goes back and forth between wifi and data.

[Shaggyskunk1BLM]

Well here's my S8+ with 8 hours of SOT - You might notice that there's still an estimated 3 & a half hours of battery life left.

[sully]

Holy crap, how did you get 8 plus hours. I only get 3. do you have sync on? do you use social media apps like Facebook, snapchat, Instagram?.