Hi,
I was thinking which consumes less power on a Note 10.1
Wifi or 3G?
Anyone got any info on this?
plz google it... it can affect all gadgets pertaining to ur question.
http://androidforums.com/samsung-galaxy-nexus/503684-wifi-vs-3g-battery-life-wow.html
According to wikipedia typical power usage for wifi would be 32mw and typical power usage for 3G would be 500mw.
That would make wifi about 15x more efficient.
Ofcourse there are many more variables like howmuch processing power is required to handle the connection and the distance between you and the accesspoint. But considering wifi is faster and needs less transfer time to finish sending data and considering the above I reckon you should leave wifi on to increase your battery life.
I do feel that wifi is much more battery saving than 3g too. hope this help
3G/4G is a power hog as long as its on, whether you are downloading data or not.
WiFi is MUCH more efficient.
And I'm talking at LEAST 50% more efficient.
Related
Ive been usng my phone for quite a long time without Wifi but ive noticed that recently, after I installed Eaglesblood (dont think the rom/its kernel made much of a difference) the battery life with wifi ON has been draining much slower than without wifi and the use of data only. I dont understand because ive been using it constantly and it has been yanking in data constantly but draining much slower. Normally data on lasts me about 11 hrs on a good day. I was home all day, so with wifi on, my batter is at 30% left with 14 hrs of usage now.. Can anyone explain to me why this is happening because I wud much rather have a slower drain on 3g data than wifi (Im not always home and data is used much more extensively in updating).
If you're using wifi, you're generally in good range and have an easy connection.
If you're using data, things like buildings and movement can interfere with your connection, meaning it has to do more "searching" for the proper signal. Even if your bars tell you that you have a good connection, all that tells you is the total amount of signal, not the available amount to you (so sometimes even if you have full bars it needs to search for a good connection).
Correct, if you're on radio (2g/3g/4g), the phone is constantly searching for a signal and will thus spend more battery.
Hence why people say, turn off your radios (airplane mode) when you're in an area with no signal...like out in the boonies, because it will spend time searching for a signal that's nonexistent.
Some people say that Wifi uses up more power than data because it has faster data transfer speeds, but that clearly isn't the truth.
NekoNyapii said:
Some people say that Wifi uses up more power than data because it has faster data transfer speeds, but that clearly isn't the truth.
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Click to collapse
Who said that? I've never heard it. Wi-Fi is known to use less batttery since day 1, clear and simple.
what do you think? which connection is more battery friendly?
wifi of mobile data?
throcker said:
what do you think? which connection is more battery friendly?
wifi of mobile data?
Click to expand...
Click to collapse
I think Mobile Data...because the Radio of the phone is already turned on either ways..uing Data or not, and when using Data, I guess it only causes a slight increase in battery consumption.
On the other hand, WiFi is an entirely different hardware component that will need its own battery consumption share.
So both Radio and WiFi being On, one for regular cellular connectivity, and the other to provide Internet connectivity, that will surely increase battery consumption.
arabology said:
I think Mobile Data...because the Radio of the phone is already turned on either ways..uing Data or not, and when using Data, I guess it only causes a slight increase in battery consumption.
On the other hand, WiFi is an entirely different hardware component that will need its own battery consumption share.
So both Radio and WiFi being On, one for regular cellular connectivity, and the other to provide Internet connectivity, that will surely increase battery consumption.
Click to expand...
Click to collapse
Wifi uses less battery. Mobile data uses alot more battery because your phone always has to search for a better/stronger connection ( that's where the option to only use 2g comes it). Also wifi sends and receives data faster which lets your phone take breaks (idle) between pushing and receiving data. Mobile data slower speeds takes shorter breaks and always has to check in with the network (fast dormancy is a new tweak to reduce that check in frequency, included in newer roms to save battery).
If you are using GPSR (Mobile Connection) it will cost less battery than WiFi, I Think...
GPRS cost less battery than wifi
and 3g cost much more.
and the weaker the signal is,the more battey is cost.
http://www.anandtech.com/show/4471/htc-sensation-4g-review-a-sensational-smartphone/10
Hello,
there are many threads and posts related to battery drain on our smartphones.
But is it a rule that wifi takes always more battery drain than 3G ?
Does the over air communication physically need more energy for Wifi than 3G GSM ? Or is it just a driver issue ?
actually wifi takes less power than 3g didn't really look up why but it is more energy efficient. If wifi is available I would defiantly use it over 3g because its greeter for the battery and faster.
On my Galaxy Nexus and Droid 1 before that, bluetooth and wifi were nowhere near the top of my list of battery drainers. On my Prime and now my Infinity they are the top 2 when used, is the common for all tablets? Seems ridiculous that these functions draw more power than the screen.
I think it's a bug in the software, there is no way that Wifi eats up that much battery.
Sent from my ASUS Transformer Pad TF700T
Chances are its a bug that will have to be ironed out.
Lets use the example of a laptop. If your connected to a wifi and roaming around there is actually a setting you can change that will determine how agressively the wireless adapter searches for a new network. The more aggressive it is the more often it will search for different access points and try to connect to them. More polling = more cycles = more power used.
If the wireless adapter in the tablet searches for a network to connect to, or a stronger open network that it could connect to, say, every 3 seconds it would be a tremendous battery drain. The same thing for Bluetooth, if its searching for saved devices (say for instance, your bluetooth headphones) every three seconds it will drain your battery pretty quick.
Now if the polling rate was changed, say, to every minute, or two minutes, or five minutes, or whatever, then it would dramatically reduce the power used by the radios.
Additionally, the transmitting power used for those radios can play a big factor in battery drain. If you are three feet from the access point and the wireless adapter is transmitting at full power thats going to be a waste of battery. It could, theoretically, determine you are close to the AP and drop the transmit power down to, say, half, and reduce the power used greatly.
Im guessing that the proper balance between performance and power savings has not yet been implimented in the tablets. Either its "All or Nothing" which, in my opinion, is kind of rediculious. Look for updates from Asus and they should have this fixed hopefully sooner than later. Custom roms should also be able to tweak this. There ARE settings in android that can address this, its just a matter of will Asus give us access to them without voiding our warranties.
To further back up this idea, consider this: My SGS2 has the ability to share its 3G connection via wifi. If i use this feature my battery will drain VERY quickly, easially within the hour my battery will be dead. Why? Increased wifi / 3g traffic, more cycles used, more power going to the antennas to transmit and recieve signals at a greater frequency. Using custom firmwares its quite easy to tweak the antennas for performance or power savings.
I have realised something with all the Samsung Android's I've used over the years.
When one has been in a known area with mobile data on, regardless of wifi state, like home or work, standby battery drain is normal, 1% per 1-3 hrs. However, when one begins to travel, with mobile data on, battery idle drain becomes 1% per 10-20 minutes pretty immediately.
This is regardless of whether Wifi is On or Off (obviously disconnected in both cases).
I have ran so many tests on this with the S3, S5, N2 and N3, and all the results are the same, battery drain goes wild when one begins to travel.
I have tried turning location on/off, syncing on/off and again results are pretty much exactly the same.
It's got to be something to do with how well the phones deal with handshakes from cell tower to cell tower, but it really shouldn't eat the battery so much. The iPhone for example performs much better in this situation.
Has anyone come across this and any ideas?
I will try to explain what may is the problem in simple words. I am studying computer and electronic engineering and we had a class this semester based on phone signals.
When you stay at home your phone is connected on the phone company's antenna. To connect you need to exchange some info so i think this will consume some power. Also one you are connected the amount of data receiving and sending are the minimum possible.
When you travel your phone has to keep connect on an other antenna and keep searching for signal. Many connecting tries may fail due to bad signal and based on the phone and the company, if your phone keep change on 3G for better signal this "change" is that consumes much power.
This is probably the reason. I may be wrong because we did only some base things over the wireless communications signals.
Different phones operate different on the signal density. Good density better signal = better battery life