Database Develop

[Q] Wifi v 3g/HSDPA on Battery

I do a lot of browsing on my milestone, i predominately use 3g/HSDPA but wondered if using wifi is better on the battery life? Any views or knowledge on this?

It depends what kind of internate usage. For example browsing or some other active internate usage meant 95% of battery drain will be the screen+CPU, so it doesnt matter what you use.
But if we talk abaut constant internet connection in the backgroud i can tell you 3G/HSDPA uses a A LOT more battery than WIFI or 2G. I went from 2G to WIFI and no real difference. But 3G has some isues with constant connection, i think the reason is, there is no real low power mode for 3G. So either have WIFI, or only turn on 3G when you need and put back 2G, when you dont use your phone.

JPHCCFC said:
I do a lot of browsing on my milestone, i predominately use 3g/HSDPA but wondered if using wifi is better on the battery life? Any views or knowledge on this?
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WiFi on this device is amazing. I use it at home and work and noticed a large boost in battery life, almost doubled my battery life.

nedrom said:
WiFi on this device is amazing. I use it at home and work and noticed a large boost in battery life, almost doubled my battery life.
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yep same here

cheers guys will be testing wifi out over the next week and see if it helps the battery life!

Hmm, I was wondering. What is your battery life on constant 3G (web browsing, google talk etc.) usage and on stand-by mode?

The milestone's wifi is one of the less consuming wifi chip ever seen on a phone.
The 3g, instead is exactly the opposite, specially if you are on fast network (10 or more Mbps), specially if you are using an old FW.
My milestone was lasting in about 6h with the original FW.
With 2.38 it can cover a whole day

[Q] Wifi uses battery >60%, is this normal?

I am on the 0828 ezgingerbread. I have wifi sleep policy set to "never", because I need VoIP. This is a G1 with wifi on, sitting on the desk very close to the wifi AP, the battery drops from >90% to ~40% in 14 hours with almost no usage. I checked the battery usage and found "Wifi" used 60-70% power.
This is different from my previous experience with MT3G rom (froyo) also from ezterry, for that the battery drain was about half of that speed I would say, with wifi always on.
Do you also see the same high battery usage for wifi? Thanks!

I'm now with ginsense 2.3.7 from rushnees and i can tell you that it drains the battery.
As i know, wifi for a long-usage is better than 3G in the battery section.Ask to the developer about another kernel.

Wifi alway drain battery if you constantly have it on. If that how much the drain is, you are pretty good. My would drop to the point where I have to charge it.

[Q] Is phone awake when automatically looking for a network?

Hi, I live in a place where there's very poor network coverage and my SGS often looses signal. And here's the problem: when I check battery consumption in the settings I can see that the phone is often awake (for about 1,5 hour overnight) and looses battery like 3% an hour even when I don't use it and is supposed to be asleep. Is it possible that it is searching for available networks during that time and that is why it is awake and eats battery?
I do not have data on, nor wifi or gps. I'm running SLIM 3.3 with 0.67b Devil.
Thanks in advance.

battery drain on 3g

Hi guys.
I know there are million of threads very similar about battery drains, but I can't find a definitive answer.
On wifi I think our x8 works with no particular drains. But on 3g is very bad.
Only data, whatsapp and mail (every 3 hours update) on. Well, 1 hours of web browsing has been my maximum(always thalking about 3g). Is this normal, according to you?
I'm now testing Gingerdx x30, but I tried other roms with more or less the same results.
What about you?

IAmNice said:
3g should drain battery more then wifi. So its normal.
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Even if I have 3g on in standby mode , battery drains too much imho.

3g Reduce the battery ..due to receiving large amounts of data transferring great performance, decibel
Hz, everything thin reduce it
Sent from my E15i using xda app-developers app

paulebe525 said:
3g Reduce the battery ..due to receiving large amounts of data transferring great performance, decibel
Hz, everything thin reduce it
Sent from my E15i using xda app-developers app
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Ok, I Understand.
What's your usage with 3g?

The 3G mode power consumption depends on the signal quality and the distance from the connected rx/tx station. With 2G mode too (this is normal), but the 3G range is much smaller than the 2G range (approx. half distance than the 2G). So, the power consumption increasing quickly with the distance. With weak signal the radio device working on max power, and the battery draining due the higher frequency (1800/2100MHz instead of 900MHz of 2G) Example: if my 3G signal is weak, my battery is burn like the hell (in standby too), if I go to the nearest rx/tx station (max. 3G signal), the battery burn faster than 2G, but the difference not significant. You can play with some RIL settings in build.prop, but you can't win extreme battery savings with these settings.
Sent from my E15i using xda app-developers app

That is normal.
However, if you're a light internet user, I would definitely recommend you switch to 2G only. All the web pages and mails would take a bit longer to load, but you would do a lot to save your battery. You can do it from the settings screen if your ROM supports it, but if it doesn't, the code *#*#4636#*#* can get you there.

Well I'm testing 2x battery

Battery drain with WiFi and Data turned on simultaneously

I Have notice that battery of note 8 drains quickly when switches for both WiFi and Data are turned on.
I turn both on for the purpose that when I am out of range of WiFi, data will turn on seamlessly, and when WiFi is available, it will switch back to it.
With both switches on, even when only WiFi is in use, the battery seems to drain quickly.
Battery life is tremendously improved when only WiFi or data Switch is on.
Any ideas as to what is the problem?
Main element to drain battery after screen is Device Idle.
Attachment: idea as to what I am talking about.
Sent from my SM-N950F using Tapatalk

If you leave the WiFi enabled all the time. Your device will constantly scan for a network, which you are signed onto. That drains the battery. Unfortunately you need to disbaled WiFi connectivity when you are not gonna use it to preserve power.

You can disable mobile data connection while you are connected to WiFi. This is done throw developer options