Battery Life of Galaxy Note Issues

[CranialBlaze]

so much for HSUPA being so much faster than HSDPA

one gives me +- 230kbps and the other gives me 350kbps

HSUPA in not an HSDPA upgrade, they are 2 sides of the same coin. U = Upload and D = Download.

High Speed Upload/Download

 

[techead]

so confused now...

UMTS (normal 3G) - up to +-400kbps
HSDPA - up to +-7mbps
HSUPA - up to +- 21mbps (H+) (A LOT OF POWER)

thought this meant that HSDPA was slower than HSUPA

 

[CranialBlaze]

so confused now...



thought this meant that HSDPA was slower than HSUPA

It is, upload speeds are always slower. HSDPA is your maximum download speed, while HSUPA is your maximum upload speed.

The above speeds are the wrong way round, its supposed to be and somewhat incorrect:

EDGE - up to +-236kbps
3G - up to +-7.2mbps

3.5G or 3.75G (I think):
HSUPA - up to +-5.76mbps (Uplaod speed)
HSDPA - up to +- 21mbps (Download Speed), the protocol is actually capable of 42mbps but they never produced the hardware for it as it became pointless with the pending LTE and it chows battery like a mofo.

4G or LTE will later come in with a massive jump of up to 1Gbps down and 150Mbps up and apparently use less power than 3G owing to a far lower band being used, bellow 900mhz.

 

[TheBadMadMan]

HSUPA in not an HSDPA upgrade, they are 2 sides of the same coin. U = Upload and D = Download.

High Speed Upload/Download

Guy ... dial *#301279# and do yourself a favour and try all the different settings. When you are done you will understand.

PS: there are three stages of 3G for us. ie 3G, H, and H+..

3G ~ 400Kbps
H ~ 7.2Mbps
H+ ~ 21Mbps

Note: bits not bytes. (for those that don't know)

 

[CranialBlaze]

Guy ... dial *#301279# and do yourself a favour and try all the different settings. When you are done you will understand.

PS: there are three stages of 3G for us. ie 3G, H, and H+..

3G ~ 400Kbps
H ~ 7.2Mbps
H+ ~ 21Mbps

Note: bits not bytes. (for those that don't know)

Try doing a smidge of research, HSDPA/HSUPA are in fact children of the 3.5G protocol, but we don't sub-classify.

3G's download speed is about 400k, not its link/connection speed which is what you have provided for the other 2 protocols, somewhat incorrectly..

http://www.differencebetween.net/technology/difference-between-hsdpa-and-hsupa/

Here again are the correct LINK speeds. For those who do not know, the expected download speed is 1/8th of the link speed.

EDGE - up to +-236kbps
3G - up to +-7.2mbps

3.5G or 3.75G (I think) aka HSPA:
HSUPA - up to +-5.76mbps (Uplaod speed)
HSDPA - up to +- 21mbps (Download Speed)

 

[SirFooK'nG]

Heavy use on my Note would flatten it within 2 or three hours (stock GB) with Wireless on BT on and streaming Vids. I have used Stock ICS, ParanoidAndroid and now RocketRom (Always flash with AbyssNote Kernel 4.2 first before I load a new ICS Rom) . Never ran my phone un rooted Rooted it as soon as I switched the bugger on!

Battery life in RocketRom is fantastic for me. I've gone from using 80% battery in a working day to 40% or less. (sitting at 78% at the moment)

 

[TheBadMadMan]

Try doing a smidge of research, HSDPA is in fact children of the3.5G protocol, but we don't sub-classify.

3G's download speed is about 400k, not its link/connection speed which is what you have provided for the other 2 protocols, somewhat incorrectly..

http://www.differencebetween.net/technology/difference-between-hsdpa-and-hsupa/

Here again are teh correct LINK speeds.

EDGE - up to +-236kbps
3G - up to +-7.2mbps

3.5G or 3.75G (I think) aka HSPA:
HSUPA - up to +-5.76mbps (Uplaod speed)
HSDPA - up to +- 21mbps (Download Speed)

I know the terms. And I know what is happening in practice, with my S2 and other Samsung phones (dunno of other manufactures), is that they use this HSDPA ONLY and HSDPA WITH HSUPA to differentiate between H and H+, theoretically it is "wrong" but that's how it works.
I've been on XDA and this has been discussed many times.

Also the OP doesnt care for terminology, just that "If i dnt need H+ speeds then I don't wanna waste battery life on it" hence dial *#301279# and set it to HSDPA only and viola battery life boost with no practical performance loss for most things.

H has the normal 3G upload capacity. H+ has ~5mb upload as you stated. This is also the reason for the DOWNLOAD boost, as there needs to be constant handshaking (aka OVERHEAD), so as the download rate increases so will the upload rate. Anything over ~7.2mbps download would saturate the upload of the standard 3G upload capacity (That 3.5G has). Thats why when you enable HSUPA your downloads increase as well as there is now ample upload capacity to handle the faster down speed.

You can try all these out practically by using Speedtest, but please do it late at night so you get a nice big chunk of bandwidth for yourself.

 

[CranialBlaze]

I know the terms. And I know what is happening in practice, with my S2 and other Samsung phones (dunno of other manufactures), is that they use this HSDPA and HSUPA to differentiate between H and H+, theoretically it is "wrong" but that's how it works.
I've been on XDA and this has been discussed many times.

Also the OP doesnt care for terminology, just that "If i dnt need H+ speeds then I don't wanna waste battery life on it" hence dial *#301279# and set it to HSDPA and viola battery life boost with no practical performance loss for most things.

Still makes your statements wrong, you specified speeds for a protocol which were incorrect, the fact that samsung does this simply means you need to clarify that what you are provider in factual under the guide that at least samsung as a manufacture completely ignores the standards defined for said protocols.

Not only the OP or samsung owners will read this so if your providing information that will be considered as fact you need clarify them and define the perimeters under which the facts are actually factual. Without the clarification your facts remain incorrect.

 

[TheBadMadMan]

Still makes your statements wrong, you specified speeds for a protocol which were incorrect, the fact that samsung does this simply means you need to clarify that what you are provider in factual under the guide that at least samsung as a manufacture completely ignores the standards defined for said protocols.

Not only the OP or samsung owners will read this so if your providing information that will be considered as fact you need clarify them and define the perimeters under which the facts are actually factual. Without the clarification your facts remain incorrect.

topic talks about a samsung device. i care not for other manufacturers.

 

[techead]

Guy ... dial *#301279# and do yourself a favour and try all the different settings. When you are done you will understand.

PS: there are three stages of 3G for us. ie 3G, H, and H+..

3G ~ 400Kbps
H ~ 7.2Mbps
H+ ~ 21Mbps

Note: bits not bytes. (for those that don't know)

cool. so option 2 will use less battery than option 3?

not gonna bother with option 1, too slow!

 

[TheBadMadMan]

cool. so option 2 will use less battery than option 3?

not gonna bother with option 1, too slow!

yes

Thats the one Im using. Very happy with it. In fact its snapier than H+ (option 3) for day to day browsing. It eliminates the switch needed to go from HSDPA to H+, which normally takes like a second or two to initiate every time. This is of course if you normally got the H+ symbol at the top, when doing data transfers. I can explain why this normally happens if you want me to.

 

[techead]

yes

Thats the one Im using. Very happy with it. In fact its snapier than H+ (option 3) for day to day browsing. It eliminates the switch needed to go from HSDPA to H+, which normally takes like a second or two to initiate every time. This is of course if you normally got the H+ symbol at the top, when doing data transfers. I can explain why this normally happens if you want me to.

coz it releases and changes the IP address?

 

[TheBadMadMan]

coz it releases and changes the IP address?

lol, nope.

Reason is H+ uses a lot of power, the developers knew this. So they implemented a feature that idles on 3g and when you need data access it jumps to H+.
Normally the H+ drops to 3G when not in use (idle) for ~30 seconds, then they implemented a new feature called fast dormancy, this dropped the idle time of ~30 seconds to ~7 seconds. This fast dormancy feature needs the network it self to support it as well to work as intended, and AFAIK our networks don't support it, but the phone still tries its fast dormancy methods, it works but just not very efficiently = a fair amount of battery drain. You could disable fast dormancy but that would just revert the idle timer to fall-back to 3G after ~30 seconds. This means that H+ will remain "enabled" for ~30secs after all transfers have stopped which is not good for battery.

Now this entire "feature" to "save" battery actually adds overhead by requiring the radios to "switch" to H+ and down again, and up and down, and up and down... as you browse the net / chat via instant messaging / do any data activities.
This in turn uses quite a bit of battery juice the enabling and disabling of the radio AND it introduces "lag" so to say.
When you read this forum for example. You reading...reading...reading (remember it is now idling on 3G) now you decide to click on a link, what will happen is it will first have to switch to H+ and then do any transfer of packets,etc. THIS gives you that lag of ~1-2 seconds every time. Where as with option 1 / 2 it just transfers straight away, no waiting time for radio to switch to H+.
Understand a bit better?

Do note though that H+ is faster in sequential transfers like downloading a huge file or streaming, but again that depends on your signal strength and network speed. For me option 2 is fast for everything I do, streaming, browsing, chatting, etc.

 

[techead]

awesome thanks man, I learnt a lot today!

I wonder if the HTC Desire S suffers from this same fate? And if you can also switch to "option 2" ?

 

[TheBadMadMan]

awesome thanks man, I learnt a lot today!

I wonder if the HTC Desire S suffers from this same fate? And if you can also switch to "option 2" ?

I am only speaking from experience from my samsung galaxy s2, generally though most galaxy devices work the same (ie. Note, SGS1, etc.). I have no idea how other manufacturer's devices work or don't work so maybe someone else can help you with those.

 

[techead]

On WCDMA when I use the *#301279# menu and change the revision to 3G only or HSDPA only the battery lasts way longer despite the fact it is still on "3G" which is probably all too quickly blamed in this case. But granted of course if I just leave the phone on GSM mode with Edge or GPRS it then lasts way longer even.

can someone please let me know why I cant change this feature now that I have upgraded to ICS? I dont need 21mbps, 7mbps is more than enough for me... I changed mine using *#301279# but now it gives an error "invalid MMI code"

can someone help me please?

 

[TheBadMadMan]

can someone please let me know why I cant change this feature now that I have upgraded to ICS? I dont need 21mbps, 7mbps is more than enough for me... I changed mine using *#301279# but now it gives an error "invalid MMI code"

can someone help me please?

Unfortunately I don't know how to do this in ICS. I'm still on GB. Did a quick search and can't seem to find anything when it comes to Samsung ROMs

 

[techead]

damn it