Put simply, the harder the phone has to work to "shake hands" with the towers...the worse your battery life will be...
finally rooted...always MAXXIMIZED..
finally rooted...always MAXXIMIZED..
Read this in another thread: Battery drain
OP is LLOYDSTRANS...
If you're in a weak signal area (1 or 2 bars) your battery will be drained quicker. 4G has nothing to do with it.
Modern phones use a farily sophistiated closed loop power control system, and they are in constant communications with the cell system in the background. Checking in with the system every few hundred miliseconds.
So even if you never touched your phone all day, you'd see quicker battery drain in a weak signal aren than you would if you had a good strong signal. Oh, BTW, I'm a retired Verizon cell phone repair tech.
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WE all agree that 4g requires more Juice, but I am most likely battling 2issues:
1. Diminishd battery after ICS with new JB OTA ICS often gave me 30 hours plus, using same usage. And 4g was a battery drainer. However, 3G was not.
2. Weak cell signals' that I will monitor as I travel to and fro, in and around home, too.
Running 4G KILLS my battery! I run 3G most if the day. Why? It beats not having any data connection, and at least I still have battery life.
I'm not too happy about my Razr anymore.
It's possible that the update may have resulted in some changes in your settings or conflicts with some apps. I would go through all of your settings and use GSam Battery Monitor to identify Apps that might be running and taking too much juice. Also, try doing a hard reset by holding down the power button and the down volume rocker at the same time for 10 seconds, which is like a battery pull and will reboot the phone.
Really use smart actions
Trigger Screen Off
Not Charging
Action
Turn of
GPS
DATA SYNC
DATA
any thing else you don't use.
Have you guys tried to wipe cache and dalvik? Or factory reset. After my wife updated to jb her battery life was horrible. I started with a cache wipe and it has improved to about the same she was getting on ICS. I'm assuming a factory reset would help even more after updating to jb.
May try another FDR. Not rooted so unable to do Davlik. Gonna try running on 2g for the heck if it to compare drainage first. Rather that FDR again!