erm i am not sure why become like that since many good feedback on the battery life span.

I think if you wan to let people help here.
1. Please get the battery logs with some details apps such as BetterBatteryStats. Then dump the logs here. Let's see what is the wakelock exist. Because we don't know where are going wrong if simply state the SOT only.

2. Simple way, when you are free to test, Please force stop all the background running apps such as whatapps, facebook and etc. Because such apps are keep running on the background to poll the services. After force close, please test whether it had been better. But it is still better to get the battery stat^^

erm i am not sure why become like that since many good feedback for 4.2.2 on the battery life span.

I think if you wan to let people help here.
1. Please get the battery logs with some details apps such as BetterBatteryStats. Then dump the logs here. Let's see what is the wakelock exist. Because we don't know where are going wrong if simply state the SOT only.

2. Simple way, when you are free to test, Please force stop all the background running apps such as whatapps, facebook and etc. Because such apps are keep running on the ba kookckground to poll the services. After force close, please test whether it had been better. Remember that, battery consumption still depends on user's usage. So it is still better to get the battery stat^^

3. The data signal changing also cause battery leaks. Weak signal area will cause more battery lost because it keep searching and changing the signal state until the stable signal. So if u want, u can manually set to 2g network only when u are under weak signal area

This error?

[RPC:S-5:AEC-0]

If yes please refer to first page. There's already a link to solution posted

Haha Thanks for ur reply o..i found out solution already. I think is some kind of cache and data corruption after upgrading to 4.2.2. In case somebody have encounter the same prob. here is the solution:

1. Go to Settings -> Apps -> all Apps:
- look for play store -> force stop and clear data
- look for google framework service -> force stop and clear data
- then reboot your phone

p/s: in case this doesnt solved your problem. Please remove your google account and repeat the procedure again. Hope this help^^

Factory reset?

Don't worry about the sound. It's the focusing mechanism of the camera. Everyone has that.

Have you tried to remove your Google Account and re-add it? If yes then I have no idea of any other potential solutions already since you've tried the clear data method . Never had that issue before.

As for the sound when shaking N4, I have that too, but doesn't seem very obvious and many people seems to have that issue, so I just ignored it

u did remove ur google account and then clear data for both google framework service and play store?

I suggest you flash back the stock rom
Use the nexus toolkit to do it

Toolkit
http://forum.xda-developers.com/showthread.php?t=1995688

Download the stock google image here

https://developers.google.com/android/nexus/images#occam

Install the Nexus toolkit in PC. Select install the phone drivers after launch
Copy the downloaded stock image ( a tgz file) to the subfolder " put your stock google image here " in the nexus 4 toolkit folder in PC
Choose flash stock image from the Nexus 4 toolkit menu
Your phone need to be in fastboot mode and connected to PC