3g and h - Galaxy S I9000 General

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
Click to expand...
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.
Click to expand...
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?
Click to expand...
Click to collapse
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.
Click to expand...
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
Click to expand...
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.

Related

Wifi or 3G?

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.
Click to expand...
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

WiFi / battery efficiency

At home my cell coverage is a little spotty. It jumps between 1x and evdo frequently. I'm experimenting with WiFi (just set it up yesterday at home) and I haven't yet had a chance to see first hand, but my question is, if I have a solid WiFi connection, is it more battery efficient than solely using the cell radio? I know that just having wifi on will drain the battery hence my confusion.
Strong WiFi is generally better on battery than even a strong EVDO signal. You should be much better off using WiFi. Make sure to set the WiFi to never sleep in the advanced settings.
zesta said:
Make sure to set the WiFi to never sleep in the advanced settings.
Click to expand...
Click to collapse
Is this a new 2.1 option? I didn't even look for it because I am so used to having keepWiFi installed. Also, I have noticed that my wifi signal appears low even though I am only about 50 feet away from my router with only 1 wall in the way running on 802.11g on a dual band router. Also, my router has the ability to broadcast 2 SSIDs to allow for a guest network so you dont have to give out your WPA password to friends and it firewalls them away from your network. I have noticed that my phone has a problem with this. My netbook sees both SSIDs without any problems and stay connected to my main SSID. On my Hero, the main SSID appears and disappears constantly. I have to log onto my guest network because it is the one that my Hero likes for some reason.
In the WiFi setting, click menu and advanced option is available.
-------------------------------------
Sent via the XDA Tapatalk App
-------------------------------------
Sent via the XDA Tapatalk App
Great info. Thanks!

Wifi and 3G simultaneously?

I just noticed a potential issue. When I enable Wifi, it appears to disable 3G.
The 3G symbol disappears. Is it possible to have Wifi and 3G on at the same time?
How is that an issue? Every android phone I've owned (G1, MT3G, N1, Droid, Incredible, Vibrant) does exactly what you're talking about when you turn on WiFi. If you're on wifi, you dont need 3G.
... and I believe this option is set by default; if you are on WiFi and the screen goes to sleep the WiFi will be disconnected and the cellular data re-enabled.
If you're concerned about making phone calls, don't be. You still get phone reception just as if you weren't on the wifi. If you want 2 data streams, that's not gonna work, though I have no idea why you would need that.
I've switched from wifi to 3g and back to wifi again while on hold in a call and sending emails and browsing. This phone is awesome. Off topic, sorry
Sent from my SGH-T959 using XDA App

[Q] how to make sure that i am on wifi or 3g

Bro and sis, is there a way to make sure whether i am connected via wifi or 3g? Cuz my 3g dataplan is not unlimited.
Thanks.
Hold the power button down until the device option screen pops up, the same screen that turns it off. You'll see a Data network mode. Select that so that it shows Data network mode deactivated. Now 3g is off for sure.
Sent from my DROIDX using XDA App
you can also use widget or personally go to setting to turn off 3g
but somehow, every time my wifi is on, 3g is automatically off
u wont see the symbol on notification bar anymore
thanks bros, nice method.
I've had issues with wifi randomly dropping. Some times I wont notice and the 3g handles my traffic even though I don't want it to due to only getting the 1gb plan. With fully deactivating the 3g data I know when I drop my wifi and am ensured that I've turned my tab into a wifi only device.
Sent from my SCH-I800 using XDA App
amanchen said:
Bro and sis, is there a way to make sure whether i am connected via wifi or 3g? Cuz my 3g dataplan is not unlimited.
Thanks.
Click to expand...
Click to collapse
The tab uses wifi first when available, and puts the cellular modem to sleep.

Wifi Sleep Policy Problems

Has anyone noticed the wifi sleep policy has no effect on the Nexus 4.
I've set mine to keep wifi on during sleep only when plugged in. However wifi remains on all the time. My wife also has a Nexus 4 and exactly the same thing happens. However my Nexus 7 and Galaxy S3 both disable wifi when sleeping.
I've had this problem on lots of different phones,. in the end i used Juice Defender which sorted it out. My Nexus 4 at the moment is behaving itself. On my Motorola Xoom (AOSP) i did a factory reset which fixed it.
Moved to Q&A
Sent from my Nocturnalized One XL using Forum Runner
Doesn't work on any android phone I've had. Sad truth
Sent from my Nexus 4 using Tapatalk 2
I'm pretty sure it worked on the Galaxy Nexus.
Let's put whether its working or not to the side for a bit.
Why would you want to turn off WiFi during sleep in the first place?
I understand why on a WiFi only tablet. Phone, not so much
Only way it works is when you disable the Location settings - all of them + turn off Google Now.
My Nexus consumes too much battery over night with all its WiFi goings on.
WiFi uses less battery then cellular. If you turn off WiFi it it uses the cellular data connection which uses more battery.
If you turn off WiFi and leave your cellular data on it is counter productive to saving battery.
albundy2010 said:
WiFi uses less battery then cellular. If you turn off WiFi it it uses the cellular data connection which uses more battery.
If you turn off WiFi and leave your cellular data on it is counter productive to saving battery.
Click to expand...
Click to collapse
Can you turn off your cellular data and keep wifi on?
donec said:
Can you turn off your cellular data and keep wifi on?
Click to expand...
Click to collapse
Whenever your device has a wifi connection it uses the cellular connection only for phone calls, nothing else. that's what albundy meant.
donec said:
Can you turn off your cellular data and keep wifi on?
Click to expand...
Click to collapse
You can turn on airplane mode, then turn on wifi. That will disable your ability to make calls over the cell network though (I used to do that when I was at home and use Groove IP). Not sure if that is what you are looking for.

Categories

Resources