[Q] high android system battery usage problem related to wifi?
Hi - Let me start of by saying I'm new to smartphones. The Galaxy S4 is my first one. Also, if I'm not posting in the right place, just let me know!
Anyhow, for a while now, I've been having a problem with the "Android System" battery usage. It will be fine for a while, but then all of a sudden, it will spike up to really high levels that I know aren't right. For instance, after 12 hours after charging, with the android system around 3% or so, all of a sudden it will jump up to the 40s, 50s or even higher percentages. I would say that these spikes happen on average every 12 hours, but can be more or less frequent, though never more than a day. I've done a lot of searching around online about this, and it seems to be a fairly common problem. However, I don't really see any real solutions other than one that involves something called gsiff_daemon. I don't think that this is the cause of my problem though because when I click on "show CPU usage", it never shows up as an active process. I asked a friend of mine who is pretty knowledgeable about Android phones, and he suggested turning off the wifi for a while and see if it happens. Well I turned off my wifi and for 6 straight days the Android System never spiked. Within a few hours after I turned it back on, it spiked. (By the way, I also tried this with GPS, but it jumped high with the GPS off too.) My friend then suggested that maybe it's happening because it's constantly scanning for a wifi signal, so he said try unchecking "network notification" in the advanced menu of the wifi section. However, it appears that this option is not on Verizon S4 phones, even though it is on other provider's S4s! So at this point, we're at a loss. I want to add that I I think most of this excessive android system usage is not a true battery drain because it's impossible for it to go up so fast (within minutes) if you've already used 50% of your battery, for example. However, I do think there is a slight increase in the battery usage when this happens because it seems that way according to the info coming from the GSAM Battery Monitor that I have installed (but I don't know if that's always reliable either). I also have Better Battery Stats, and I can provide any wavelock info or anything else that might be helpful. I think I may just have to do a factory rest, but any help would be great!!