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Hi,
I use WMWifiRouter to share the 3G internet on my Hermes on my laptop. The problem I'm facing is, even with the battery fully charged and having the mobile on AC power - the battery runs out by 3 hours at max.
Is this normal behavior? Is the power consumption really that high when using internet (GPRS/HSDPA) and Wifi at the same time?
(my apologies in advance if this has already been answered - i tried the search )
nabeelmoeen said:
Hi,
I use WMWifiRouter to share the 3G internet on my Hermes on my laptop. The problem I'm facing is, even with the battery fully charged and having the mobile on AC power - the battery runs out by 3 hours at max.
Is this normal behavior? Is the power consumption really that high when using internet (GPRS/HSDPA) and Wifi at the same time?
(my apologies in advance if this has already been answered - i tried the search )
Click to expand...
Click to collapse
I don't know exact figures, but usually running 3g/HSPDA will drain the battery pretty fast, using WiFi will do the same, both together and I think it could be reasonable to see the phone die after a few hours of constant usage. But, if its plugged into AC power, I don't see why it would drain at all, or at least that fast...I am sure someone with more knowledge than me will chime in as well...
i used to be regular wmwifirouter user with my hermes and i can confirm that battery will jux drain regardless u put it in charge with usb or ac.
if i recall correctly, i think i see it somehere tat hermes has known issue that the charging will stop if it's get overheat and YES when using WIFI & 3G it can fried egg.
anyway, i hv quit wmwifirouter and stick to internet sharing with bt / usb
thanks for your responses... i guess than this is not unexpected.
and yes, it does heat up like anything. Also, sometimes it would stop charging as soon as i launch WMWifiRouter (infact i've noticed this behavior without WMWifi Router too :S) but usually quitting and restarting WMWifirouter or restarting the device fixes it.
The reason I can't use it with BT is that the signals in my room are really low, so i usually leave it in one end of the room where the signals are relatively strong and connect via Wifi
tried an HSDPA router I got from work, that fixes my issues, but I am still evaluating whether its worth it to purchase a router of my own
im sure this is probably a stupid question, but should i just use my 3G at all times? i downloaded wifisync so it automatically connects to a wifi when in range, but which is faster? I also have a high speed internet connection at home which is 54mbps, so if i connect to that wifi... will it be faster than the regular 3G service?
rschuman90 said:
im sure this is probably a stupid question, but should i just use my 3G at all times? i downloaded wifisync so it automatically connects to a wifi when in range, but which is faster? I also have a high speed internet connection at home which is 54mbps, so if i connect to that wifi... will it be faster than the regular 3G service?
Click to expand...
Click to collapse
Yes, your wifi will be faster than the 3G. It's really your preference.
oh ic... but since i have wifisync running, whenever i dont have a wifi it will be disabled so then ill have my 3G running....correct?
correct
The G1 can determine if you have Wifi/G3/E/G in your area and switches between the fastest possible method. For wich it has access parameters
3G is usually a bigger drain on your battery, since your phone's signal has to go farther than it would for Wifi. Wifi is extremely localized compared to 3G, and takes less effort for the phone to connect and communicate with wifi.
jordanjay29 said:
3G is usually a bigger drain on your battery, since your phone's signal has to go farther than it would for Wifi. Wifi is extremely localized compared to 3G, and takes less effort for the phone to connect and communicate with wifi.
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Click to collapse
I've always found the opposite to be true. Wifi always kills my battery way faster than 3G.
wi-fi kills my battery more than 3g if the wi-fi is on and not connected (scanning for network), but if the wi-fi IS connected it seems to drain slower than the 3g
I saw that when I switch my apn on. What does h stand for?
Sent from my GT-I9000 using XDA App
ngkkv said:
I saw that when I switch my apn on. What does h stand for?
Sent from my GT-I9000 using XDA App
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Click to collapse
HSPDA I think
Bascially when my phone download it displays a H and when it's not it displays 3G
Yes, it's HSDPA. It's faster than 3G, so it's good if you see that, it means that your provider has faster internet
On Nokia handsets, HSDPA shown as 3.5G .
Tyxerakias said:
Yes, it's HSDPA. It's faster than 3G, so it's good if you see that, it means that your provider has faster internet
On Nokia handsets, HSDPA shown as 3.5G .
Click to expand...
Click to collapse
uhm does that mean i have am using a premium service that requires me to pay additional lol?
it wasn't like this. It recently became H from 3g only. :X
I've never heard of HSDPA being charged as a premium service. It's just your providers network.
Anyway you can disable it from them settings if you want. Just go to Settings>Wireless and network>Mobile networks>Network mode and choose GSM only. An alternative is to use APNdroid from the market.
I disable it when I'm in a WiFi network or when I don't need a data connection because it uses more battery.
I use the "WCDMA only" (forces HSDPA on) when I want a data connection so my phone does not switch to GSM automaticaly. Be careful if you use that option though. If you move to an area with no HSDPA coverage, your phone won't switch to GSM and you'll have no network connection
Fireloon said:
I disable it when I'm in a WiFi network or when I don't need a data connection because it uses more battery.
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Click to collapse
I thought if you were on wifi, the phone automatically turns off the mobile data connection?
tameracingdriver said:
I thought if you were on wifi, the phone automatically turns off the mobile data connection?
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That's partly right. It does not send or receive data through the mobile data connection but that does not mean it switches to GSM network. It stays connected to the HSDPA mobile network just handles the data requests through WiFi. In my experience anyway
True, but if you don't go into WiFi/Advanced/WiFi Sleep Policy and set it to NEVER, when your phone goes to sleep so does WiFi, which causes the 3G radio to turn back on and using wireless data for updates, email checks, etc.
Long story short, if you're spending a lot of time in a WiFi area, set it to never sleep to save a lot of battery and a bit of data usage.
If you're moving around a lot, leaving WiFi on when the phone is sleeping will use more power, because not only is your 3g radio on, so is the WiFis, as it's constantly looking for a known network to hook up to and scanning for new ones.
Croak said:
True, but if you don't go into WiFi/Advanced/WiFi Sleep Policy and set it to NEVER, when your phone goes to sleep so does WiFi, which causes the 3G radio to turn back on and using wireless data for updates, email checks, etc.
Long story short, if you're spending a lot of time in a WiFi area, set it to never sleep to save a lot of battery and a bit of data usage.
If you're moving around a lot, leaving WiFi on when the phone is sleeping will use more power, because not only is your 3g radio on, so is the WiFis, as it's constantly looking for a known network to hook up to and scanning for new ones.
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Click to collapse
Hi I have a few questions about your comment here. I am in an office connected to wifi all day at work and when at home connected to wifi. When I look at battery usage it states
Display 46%
cell standby 19%
phone idle 12%
mario live wallpaper 9% (highest ive seen it but it is the best thing on this phone)
...
...
Wi-Fi 2% (lowest item in list)
Are you saying if i tell it to never make wifi sleep then cell standby usage will go down and i will use less network data? and battery usage will be less then if it makes wifi sleep?
Also if i do this when I am not in office/home and i disable wifi will that also save me some battery?
At the moment i just have wifi on all the time and let the phone use what it wants to.
badasschris said:
Hi I have a few questions about your comment here. I am in an office connected to wifi all day at work and when at home connected to wifi. When I look at battery usage it states
Display 46%
cell standby 19%
phone idle 12%
mario live wallpaper 9% (highest ive seen it but it is the best thing on this phone)
...
...
Wi-Fi 2% (lowest item in list)
Are you saying if i tell it to never make wifi sleep then cell standby usage will go down and i will use less network data? and battery usage will be less then if it makes wifi sleep?
Also if i do this when I am not in office/home and i disable wifi will that also save me some battery?
At the moment i just have wifi on all the time and let the phone use what it wants to.
Click to expand...
Click to collapse
I believe "cell standby" does not talk of ACTIVE 3.x/2.x G connections! So you should not be looking at that parameter. However it is interesting for us to know that WiFi hardly use any power. "cell standby" should only talk of when mobile is really in standby or display off, low power (suspended) mode.
badasschris said:
Hi I have a few questions about your comment here. I am in an office connected to wifi all day at work and when at home connected to wifi. When I look at battery usage it states
Display 46%
cell standby 19%
phone idle 12%
mario live wallpaper 9% (highest ive seen it but it is the best thing on this phone)
...
...
Wi-Fi 2% (lowest item in list)
Are you saying if i tell it to never make wifi sleep then cell standby usage will go down and i will use less network data? and battery usage will be less then if it makes wifi sleep?
Also if i do this when I am not in office/home and i disable wifi will that also save me some battery?
At the moment i just have wifi on all the time and let the phone use what it wants to.
Click to expand...
Click to collapse
3G radio uses a LOT more power than short range WiFi. When WiFi is on and connected, the 3G connection is totally turned off. Totally.
Think about it this way...once you get past the new and shiny phase of owning your device, it probably spends MOST of its time with display off and sleeping. So, it will spend a LOT of its time connected to 3g if you let the WiFi go to sleep.
Turning Background Data and Autosync off will prevent the 3G radio from switching back on when WiFi is sleeping (and prevent WiFi from using much transmitter power when awake as well). But turning off sync/background data is not ideal if you need emails or whatever as soon as they are sent, accurate weather forecasts, etc.
Least battery usage is of course in Airplane mode with WiFi and Bluetooth turned off as well, since there is no radio activity at all. But we bought these devices in part because they're connected and "always on" data is coming in.
Here is how I do it:
I use APNdroid to switch 3G off when it's not needed. I find that I only rarely need 3G. Seems that you do not need it either.
I leave WiFi sleep on because tbh I have no reason not to. When WiFi goes to sleep 3G does not autoconnect anyway because of APNdroid.
That way the phone uses plain 2G when no data are needed. When data are needed it uses WiFi most of the time and 3G only when no WiFi is available and I manualy select to put 3g on
Sorry to chair another question.. I see a 'g' logo sometimes... Instead of 3g and h. What's g?
Sent from my GT-I9000 using XDA App
ngkkv said:
Sorry to chair another question.. I see a 'g' logo sometimes... Instead of 3g and h. What's g?
Sent from my GT-I9000 using XDA App
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Click to collapse
G = GPRS ( General Packet Radio Service )
E = EDGE ( Enhanced Data rates for GSM Evolution )
3G = 3rd Generation ( I unno, wtf. )
H = HSDPA ( High-Speed Downlink Packet Access )
Basically G(PRS) operates over GSM, it's from dial-up speeds to twice as fast as dial-up.
EDGE operates over 2G, it's almost as fast as standard DSL, about 400kbits and a maximum theoretical 1Mbit.
3G operates in tandem with HSDPA, infact technically HSPA is the technology that is used on the 3G network. It is typically up to 7.2Mbps, with a maximum theoretical of 14Mbit.
HSDPA and HSUPA are specific aspects of a HSPA enabled system. They are Down link and Up link capability respectively.
When you see H, the phone is going from a stable 3G connection to a boosted power consuming ( which is why it isn't constantly on ) state in which it can download very quickly.
is it possible that my SGS2 has a bigger battery's consumption in Wifi mode than in 3G? Through Superpower I disabled cellular data when Wifi is on but it seems that when it's activated the phone has a consumption around 4% in a hour whilst using cellular data it is around 2%. My Modem is KE1...
Oh lawd, make it stop...
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
What firmware version did you use?
sent from my 2.3.3|dxkg3 DJGalaxy S2
parknook said:
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
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Click to collapse
I can confirm charging takes much longer if connected to wi-fi n, i usually set wi-fi policy to off when screen off, this way charging takes the usual time. How do i set my wi-fi to g connection instead of n ? I'd like to test too, battery seems to drain kinda fast when connected to wi-fi n.
parknook said:
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
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Click to collapse
I think it depends on what router you are connected to. It has been said that D-link routers causes a higher drain than others.
So which router do you own?
Sent from my GT-I9100 using Tapatalk
Sp1tfire said:
I can confirm charging takes much longer if connected to wi-fi n, i usually set wi-fi policy to off when screen off, this way charging takes the usual time. How do i set my wi-fi to g connection instead of n ? I'd like to test too, battery seems to drain kinda fast when connected to wi-fi n.
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Click to collapse
OT but how do you do that?
sunseaker said:
OT but how do you do that?
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Click to collapse
Settings->Wireless & Network->Wi-Fi settings->(menu button)->Advanced->Wi-Fi-sleepmode
Menu item names might differ, translating from swedish.
Awesome thanks for the tips
sent from my 2.3.3|dxjpe DJGTabs7
parknook said:
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
Click to expand...
Click to collapse
The opposite is true for me. I have my wifi sleep policy set to "never" and I lose 1-1.5% an hour overnight. On the other hand, the signal at my house drops in and out so if I spend the night on 3G/HSDPA there is a large drain.
Steffe2 said:
Settings->Wireless & Network->Wi-Fi settings->(menu button)->Advanced->Wi-Fi-sleepmode
Menu item names might differ, translating from swedish.
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Click to collapse
OMG, I completely forgot about those settings. I remember seeing them once when I first got my device but never looked again.
Firmware and router model
Should have mentioned that it is 2.3.4 KG2
The wireless N router is a Cisco 610
The wireless G router is a Belkin