@WonderToy wrote: Start Googling. There are Oreo Standby drain problem on S7, S8, S9, OnePlus devices, Sony devices etc. Grow up and stop whining. We need solution, not a bunch of crybabies crying over Samsung.   @dj1891 Name a single "non-dirty" company. I dare you.  No one has a similar bug on the Oneplus 5, 5T, 6 or Xiaomi devices groups where I am. Groups with houndreds of people. But in the S7's group the vast majority has this bug! We need a solution, not a bunch of people saying others must learn to use Google! ... View more

If you don't know the origin of the problem, you can't fix it. Anyways, Samsung doesn't publish source code, except the kernel, and probably S8 and S9 have a very different kernel compared to S7 to identify if it's related to that. It's impossible to make changes if we haven't got any sources. ... View more

I think that the problem isn't the modem. It's a software problem of the implementation of Android Oreo by Samsung. The bug is only present in Oreo, every day! If you use mobile data (happens with 3G too), you can be affected by this bug. I've reported the bug on Samsung Members, but again, the anwser is always a generic message based on a list of step by step that employees of Samsung send to us based on known problems. If the problem is not registered, the answer will always be the same, "send your device to our technicians to be investigated". It's not a hardware problem, it's a software problem with the latest software! This is not a solution. Come on Samsung! ... View more

Does your battery drain come from "cell standby"? I'm suffering in Oreo a serious battery drain of cell standby. The drain is only when you're using mobile data. I'm not the only one with this problem. ... View more

No. If it´s an official firmware, Knox counter isn´t increased. ... View more

And I can say that in Oreo with the drain, my battery is terrible. With the same usage, on Nougat, I don't need to charge it twice a day minimum. ... View more

It isn´t only S7 Edge, I have the S7 Flat and it´s the same problem. The only constant is the Oreo update, it seems that the mobile signal is not managed correctly in terms of energy with the new update. Another curious fact about this issue, is that the detailed info of "cell standby" drain says "0 minutes" of activation, but the energy consumed is shown. On idle, the mAh consumed by this increases without control. I´ve done some research with another persons that suffers the bug, and at first instance it doesn´t seem to be related to an old manufacturing date of the phone. S7 from 2016 and 2017 suffers the bug. ... View more

I've downloaded the latest Nougat ROM for my region and flashed with Odin. That's the way to return to Nougat. I have a notification saying me to update to Oreo, but I won't update until this big issue is fixed. Why we can't talk with Samsung directly? Is not possible to report bugs, or give information to Samsung with this issue to be fixed? What we need to do, publish messsages like this until some administrator here notifies the issue? ... View more

Same problem here since I updated to Oreo. The phone is perfect using WIFI, but when is using mobile data, the battery drain is quite severe, independently the intensity of the cell signal. I´ve tried all, including factory reset, reinstalling again the software wiping all data, and not installing apps except the most important for my use. The result is always the same, and when the signal is bad, the battery drain is a disaster. I've returned to Nougat, it´s so frustrating that the phone's battery doesn't last a complete day without needing to charge it 2 or 3 times. I've contacted with support and they said me to change the battery. Really? It's not a hardware problem, it's a software problem, only present in Oreo, not in Nougat. A battery replacement won´t solve a software bug. ... View more