Discussion in 'Android Devices' started by rdefino, Oct 12, 2011.
Is the way to force the bionic to use 3g instead of 4g to save on the battery?
Its under wireless and network settings under mobile networks.
Does this really help on battery performance?
yes it does, a little. I have 2 Batteries though so Im never worried about it, lol.
just choose "CMDA" instead of "CMDA/LTE" and it will use 3G only.
I had battery issues with my first Bionic and returned it, but in the process of troubleshooting I was told that 3G took less battery than 4G. After the replacement came and I had a unit that worked properly, I thought I would test that idea.
I realize that there are multiple factors involved here and this test is by no means controlled, but I tested it twice and got similar results both times.
First run: 4G with my normal usage. Off charger at 6:00am and let it run until it dies. Battery died 51 hours and 30 minutes after unplugging.
Second run: 3G with my normal usage. Off charger at 6:00am and let it run until it dies. Battery dies 52 hours after unplugging.
Third run: Same as first, but I added heavier usage, i.e. navigate from home to work (40 minutes) and back. Watched a few videos from YouTube (about 30 minutes worth.) Battery dies while I'm asleep, so I have to shift the unplug time.
Forth run: Same as third, but off the charger at 6:00pm. Battery dies at 49 hours and 15 minutes after unplugging.
Final run: Same as forth but on 3G. Battery dies at 50 hours.
For the last two runs, I navigated the same routes and watched the same videos.
This, for sure, isn't scientific by any means. In fact, some of my college professors would shoot me for even calling it a test, but, at least in my mind, it shows that 4G does drain the battery a bit more than 3G. I am using an extended battery.
Its not that 3g takes less battery as opposed to 4g not being widely available and when you have it on 4g and it cannot find a signal it will sit there and spin trying to get a 4g signal which is what causes the battery drain, at least that is how it was explained to me by a VZW tech so take that with a grain of salt.
thanks guys,this is great info.
Now 52hrs...wow. i have the standard battery and it was set for 4g. With minimal use (making a couple calls, surfing a bit, and replying to some email) the battery was at 50% 9 hrs later.
I hope this is normal, but I do need to get the extended battery.
Actually it is as simple as that, an LTE connection currently takes significantly more power than a CDMA one on the Bionic(and every LTE phone that is out right now).
AnandTech - Motorola Droid Bionic Review - Dual Core with 4G LTE
Just look at the web browsing over cellular connection battery life. 5.2 hours with 3G, 3.2 hours with 4G doing the exact same thing.