The fact that Google now and location services were chewing through your battery definitely means there's something wrong. I have all that on. It seems like you aren't too worried about having them active though. If that happened to me I would have factory reset my device. Or even flashed the factory images, which seems to fix more issues.
Did your wife have the same issues?
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McHockeyVette27: I gave the Readers Digest version of the process. Sorry. I am really not happy to lose the features but I can only do so much to solve the issues as assistance from Google...well here's the long version:
It included a long, warm & fuzzy phone call with Nexus Support (where I was given tips on dimming the display and such web-link fare) that did nothing to change the problem, a Factory reset from the web links provided by that phone call, (which only changed my attitude about calling Nexus support). Here's their latest response:
"You are doing all the steps that I would give you to improve your battery life, you can try and restart the device once every other day that may also help on getting you that extra battery life, you also want to make sure you are using the charger it came with some chargers may charge faster which can cause your battery to die faster. (I am Qi charging or using the factory charger only though I am not sure I buy the statement. Would you?)
If you have any further questions or concerns, please feel free to reply directly to this email. Also, you can visit our help center at:
support.google.com/googleplay"
Yeah a visit "there" is not all that, I have been there.
Troubleshooting included experimentation with both the 16GB and 32GB Nexus 5's in the household (both of which have both problems I mentioned, of battery life and poor voice dial recognition. Both phones showed the same dramatic improvements upon terminating those two apps.)
Finally I decided on reading the forums to see what others were doing about this. I tried some other suggestions in the forums like reverting versions of Google Search, Play and other apps, clearing cache / data in these (and the Bluetooth Share), none of which provided the kind of solution termination of Location services and Google Now did. I will admit perhaps Google Now might not need to be stopped, but it was late and I had had enough fun for one day with this, so I turned both off at one step. Of course without location services "Now" is a little impotent.
I was told the voice dial issue was probably my speaking voice, which apparently was good enough for the N4 but not the N5(s). And my wifes voice as well, though she never had a Nexus 4, her 2 yr old TMob/HTC G2 worked well). I tried three different BT2.1+HDR headsets from Samsung (one was new in box) and a Motorola H500 vintage headset I had lying around with no joy. I have given up on the voice dial issue for the moment - I will get a newer headset soon and pick it up then. I admit I am not returning the phone as I believe these are soft issues, not hardware. Today it occurs to me, from another forum post, that Android Device Manager and / or my AVAST security software may be conflicting with Location or Now, so perhaps I will do more troubleshooting when time permits.(OR maybe not: My wifes unit has neither the AVAST nor the Android Device Manager active yet.....)
Now, you have peaked my interest with the phrase "flashed the factory images". I have no idea how one would do that but might try it if I felt comfortable with the process. I did not see it suggested before, so I did not investigate it. Is there any reason you might think it would be beneficial? I am assuming that it reverts all the software on the device to what was intended to be the system image at delivery. Perhaps something was corrupted in one device, but two? Srains the logical mind a bit, but I suppose it could happen. They were not shipped at the same time, but probably were delivered to Google in the same batch, delivered to me Nov 6 and 7th.
I used to make fun of the Genius'es at the Fruit Stand, but maybe a Genius would be handy about now....or at least a KB or TechNet from Google instead of the dumbed down support they offer. Geared for the lowest common denominator I suppose. I will say the phone support Rep was nice if ineffective.
Anyway thanks for the reply and if I missed anything (I did get tired during all this) please point it out!!! Thanks.
Steve