What I was pulling down with my old Galaxy Nexus.
I do almost the same exact things with my Nexus 4 through a typical day that I used to do with my Galaxy Nexus, and at the end of the day, the battery meter is significantly lower than what I'd come home with with the GN.
It's not scientific, of course, but in the morning when I get into work, I would usually be at ~92% with the GN constantly playing music, browsing Flipboard, some websites, some texts. Doing almost the same exact thing with my Nexus 4, I get into work with ~86%.
Just little things like that tell me the battery is just not up to snuff. And my Nexus 4 brightness setting is ridiculously low (I think the screen is gorgeously too bright).
Anyway, I was able to dig up some old photos of my GN battery life:
This one is even more amazing:
Here's are recent Nexus 4 photos:
Again, not a 1 to 1 comparison, but you can already tell one does better than the other.
4.2.2 needs to come. :T
Once it comes, there won't be a comparison. The difference will be night and day.
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Couldnt this be because the Galaxy Nexus had a Super AMOLED screen and the Nexus 4 has IPS? Android is a very dark OS, so the benefits of using AMOLED are great.
No he's right, the Nexus 4 currently does have a battery life shortcoming. Fortunately, this is something that can and will be corrected.