After a week at July latest BTU firmware with ERG2 PDA and ERG2 modem I have to say bug is still here. As with post-EDR6 modems, there is no Cell Standby in the top of battery stats but high Android System % instead with Google Play Services, Cell standby and Device Idle following. First time bug activated after ~24h since flashing, then I had 4(!) good days, then bug hit again and again at random times. Also I had longtime voice call over whatsapp (constant LTE connection) and this was real disaster for battery. The only "good" thing - now it's possible to temporary fix it by switching to 3G and then back to 4G. Anyway, 4G is still non capable mode bacause of this bug. BTW, I have an answer in Samsung Members (at last!), which is of course useless - if you have problems after update, make reset, if you still have problems - go to Service center. I think, they not ever read my message, they just classified it by keywords and give standard copy/paste answer. In fact I'm tired of all these firmwares, modems, flashing, waiting updates, testing, hoping... without any glimpse of support from Samsung. Just checking about OnePlus3 (classmate of S7), they seems to fixed Cell standby bug in 5.01 firmware in December 2017 (!). And reading their forums as well as Xiaomi forums - there is real feedback between users and developers, as it should be. We, at the other side, have imitation of support. Devs doing something, but nobody knows what will be fixed and when, we don't even have aknowledge of this bug. Yes, there is new (again) ERGE build and new OTA planning in September (August in my Members app and 8.0 again) but... In the end i think I will just root my phone and install some custom ROM. Three my friends bought Galaxy phones because of me. And next time they ask me about new phones I will recommend some other brand. There is choice. And there is no reason to pay extra fo phantom support and services. Sorry for long message. @Robotson, we are flashing official non modified firmware with official tool (Odin) so you don't need root/unlock anything and knox will not trigger. This is the same way as they do in service center.
... View more