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Easy way how to improve 3G(2G) troughput

OP Stimpoff

5th December 2009, 09:31 PM   |  #1  
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UPDATE: it seems that for some users is needed to do two reboots after each change of prop file.

It seems that is work for most users with rom based on DRC83. It seems that works in US and EU region. Therefore I decided to start separate thread (something was discussed in cyanogen's thread).
I tested it on cyanogen 4.2.7.1 but it should work with other ROMs too. I think that improvement is depedent on presence of HSUPA feature in your network.
Try it and let us to know....

Comparison video - two G1 simultaneously (sorry for poor quality-Nokia)
http://www.youtube.com/watch?v=bskKwh2xBXs

I have found that my cyan G1 is much slower in uplink in 3G network than official TMO EU G1. Same radio but "primary band" (phone info menu) was different....
Cyan (and other US ROMS):
62.50S.20.17H_2.22.1.26l
TMO EU:
62.50S.20.17U_2.22.1.26l

I found difference in build.trout.prop (build.prop - TMO) which make this difference.

Cyan (TMO US):
ro.ril.hsxpa=1
ro.ril.gprsclass=10
TMO EU:
ro.ril.hsxpa=2
ro.ril.gprsclass=12

I changed values in build.trout.prop.... TADAAA
62.50S.20.17U_2.22.1.26l is showed in phone info. Uplink is almost three times faster. It seems that is some improvement in EDGE too (gprsclass).

THEORY:
US ROMS has disabled HSUPA feature.
ro.ril.hsxpa=0 - UMTS r99
ro.ril.hsxpa=1 - HSDPA
ro.ril.hsxpa=2 - HSDPA/HSUPA

script which apply all stuff (thanks cloverdale)
note: script use cyanogen build.trout.prop
http://forum.xda-developers.com/show...postcount=7036

or

1) adb pull /system/build.trout.prop build.trout.prop
2) edit with notepad++ (or other unix format capable editor)
3) adb remount
4) adb push build.trout.prop /system/build.trout.prop
5) reboot

in on other roms change build.trout.prop to build.sapphire.prop or build.prop depending which one your ROM using
Last edited by Stimpoff; 7th December 2009 at 12:45 PM. Reason: Video added
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5th December 2009, 09:33 PM   |  #2  
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Hmm. looks interesting, will like to hear feedback from others first.
5th December 2009, 09:58 PM   |  #3  
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I have **** upload speeds. And my buddy at his house, has really really slow 3g speeds, in some area its fast for him, but at his home, it sucks.

Ill try this right meow.
:holds breath:
5th December 2009, 10:00 PM   |  #4  
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Hmm Interesting...

Isnt HSUPA for uploads?
so it will only affect upload speeds?

but I'll give it a try anyway
5th December 2009, 10:00 PM   |  #5  
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Quote:
Originally Posted by Stimpoff

It seems that is work for most users therefore I decided to start separate thread (something was discussed in cyanogen's thread).

I have found that my cyan G1 is much slower in uplink in 3G network than official TMO EU G1. Same radio but "primary band" (phone info menu) was different....
Cyan (and other US ROMS):
62.50S.20.17H_2.22.1.26l
TMO EU:
62.50S.20.17U_2.22.1.26l

I found difference in build.trout.prop (build.prop - TMO) which make this difference.

Cyan (TMO US):
ro.ril.hsxpa=1
ro.ril.gprsclass=10
TMO EU:
ro.ril.hsxpa=2
ro.ril.gprsclass=12

I changed values in build.trout.prop.... TADAAA
62.50S.20.17U_2.22.1.26l is showed in phone info. Uplink is almost three times faster. It seems that is some improvement in EDGE too (gprsclass).

THEORY:
US ROMS has disabled HSUPA feature.
ro.ril.hsxpa=0 - UMTS r99
ro.ril.hsxpa=1 - HSDPA
ro.ril.hsxpa=2 - HSDPA/HSUPA

script which apply all stuff (thanks cloverdale)
http://forum.xda-developers.com/show...postcount=7036

So is this a European mod only? You say you were slower than the TMO Eu release. Im assuming its because of a different wireless frequency used? Not really sure.. more info would be great..

Also, which Cyan builds do this apply to? Only the newest or all of them? Good info to have in the first post!
5th December 2009, 10:14 PM   |  #6  
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i will test it tomorrow and will give a feedback!
5th December 2009, 10:23 PM   |  #7  
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Quote:

So is this a European mod only? You say you were slower than the TMO Eu release. Im assuming its because of a different wireless frequency used? Not really sure.. more info would be great..

Also, which Cyan builds do this apply to? Only the newest or all of them? Good info to have in the first post!




I updated first post little bit. I posted this yesterday in cyan thread and US users confirmed improvement what was for me quite supriesing. I expected improvement for EU users with canogen mod (or other US based mod).
5th December 2009, 10:23 PM   |  #8  
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Ok...
for people in Australia on the Three Network...

2 bar reception

No mod:
Download:
123kbit/s, 246kbit/s (Max)
Upload:
88kbit/s, 115kbit/s (Max)

With Mod:
Download:
308kbit/s, 308kbit/s (Max)
Upload:
114kbit/s, 115kbit/s (Max)

So theres some improvement

Tested using Xtremelabs Speedtest app
5th December 2009, 10:24 PM   |  #9  
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No change for me, my uplink speed actually dropped a tiny bit.

before:
dl: .59mbps
ul: .41mbps

after:
dl: .55mbps
ul: .37mbps


edit*
also used speedtest.net, and full bars
Last edited by docsparks; 5th December 2009 at 10:33 PM.
5th December 2009, 10:25 PM   |  #10  
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Wow, nice find
It did improve 3G speed for me, however not exactly the way i expected - there was only a slight change in upload speed, but a big change in download speeds.
And some numbers showing the change (speed measured with speedtest.net app from market).
Before modification:
d/l [kbps] u/l[kbps]
1340 101
1310 100
1494 106

And after the modification:
d/l [kbps] u/l[kbps]
4025 138
3738 137
3523 138

To keep the test reasonably accurate the phone was just sitting on the desk in exactly the same place during both tests. I did't have full signal reception though so upload speeds may be even higher in places with better 3g coverage.
Doing the modification doesn't seem to break anything and is childishly simple - i just used root mode in Estrongs file explorer to edit the file. In my opinion is worth a shot, especially for those from europe (US roms probably have this disabled for a reason).

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