Database Develop

[Q] Best modem for Rogers on i9000 Kernel?

Just wondering what you guys think the best modem is for Rogers in Canada when using GT-9000 modems. KP1 had bad GPS, terrible reception and bad call clarity so that one is out. JL3 is good for everything, but calls seem to lag when going out and information takes a bit to start flowing to the phone. I haven't used JK4, but will try it soon.
What have you guys used and what are your experiences?

Hi
I'm also looking for this information. I recently updated to Rogers stock Android 2.2, flashed the speedmod kernel so that I can have the BLN and now when I try to do voice over bluetooth in my car all I get is static. I've done a bunch of reading and this seems to be due to the use of the stock i896 modem with the i9000 based speedmod kernel, correct?
So, in light of this, what modem should I be using on my Canadian Rogers Captivate i896?
Thanks
Jason

I was just about to post a similar question to this until I found this thread googling "KP1 i9000" sweet.
Really itching to flash Fireball 2 but I don't feel like trying all the modems :l

Subscribing......

User LimaI896 has this in his signature:
Samsung I896 Captivate
ROM: Serendipity's 4.0.1
Kernel: Hardcore's SpeedMod K12P
Modem: JL3
Might try flashing his ROM, kernel and modem over the weekend..

I am running Perception 10.2 with the latest Firebird kernel and JK4 modem. I get decent phone and GPS performance with either JK4 or KP1. The only issue I am facing is that when the network switches to 1900 band, I do not get 3G signal.
The phone would be perfect if I can find a way to disable 1900 and just use 850 or 2100.

I'm running my own custom concoction of the Rogers Stock Rom with junk removed, battery mod, Glitterballs' Kernel, and JK4 and couldn't be happier.
I'm considering packaging my ROM and releasing it.

Jk4 is where its at.

whiteguypl said:
Jk4 is where its at.
Click to expand...
Click to collapse
Whats better about JK4?

nickm50 said:
Whats better about JK4?
Click to expand...
Click to collapse
Using an i9000 modem and the WCDMA 850 band:
The UGJK3, UGJK4, and TLJL3 modems have rendered the below obsolete. Use one of them and you will have 850 WCDMA enabled by default.
JK4 modem provides the best signal and lowest voltage when unplugged therefore saving on battery. JL3 came in second and was just a tad bit higher in voltage use than the JK4. Both JK4 and JL3 stayed under 4000 while the other modems listed were about that threshold with a weaker signal.
trueish so you have to use an i9000 modem (jk3, jk4, jl2, jl3, jpd, kp1..etc) refering to i9000 roms, which most are using
and in my own testing it solved any issues i was having. although with these phones.. you never know and your phone might just hate whatever modem you put in it until one day it stops acting like a d*** for no apparent reason.

whiteguypl said:
Using an i9000 modem and the WCDMA 850 band:
The UGJK3, UGJK4, and TLJL3 modems have rendered the below obsolete. Use one of them and you will have 850 WCDMA enabled by default.
JK4 modem provides the best signal and lowest voltage when unplugged therefore saving on battery. JL3 came in second and was just a tad bit higher in voltage use than the JK4. Both JK4 and JL3 stayed under 4000 while the other modems listed were about that threshold with a weaker signal.
trueish so you have to use an i9000 modem (jk3, jk4, jl2, jl3, jpd, kp1..etc) refering to i9000 roms, which most are using
and in my own testing it solved any issues i was having. although with these phones.. you never know and your phone might just hate whatever modem you put in it until one day it stops acting like a d*** for no apparent reason.
Click to expand...
Click to collapse
Thanks for the explanation. just flashed jk4, the calls are definately louder and clearer now. data is about the same.

SO.. noob question: JK4 would go well with my 2.2 running Cognition?

this is for damian. thanks

bumping this..
Is JK4 still the best modem for I9000M? thanks in advance

Mod please delete. Thank you.

Old

good to know, i am using that rom too. you can try speedmod kernel also, for the modem, it needs to be i9000 compatible.

I have success with both firebird kernal and speedmod kernel with the kp1 modem and the jk4 modem. You could tries these modems and see if they work for you. Not every modem will work the same for every phone in any location. You will just have to keep trying them out until you find one that works for you

well about every modem ive tried. aka or rom. works. just the poor call quality or slow network speeds. i tried speedmod last night. no go on ji6. whats wierd is on cognition or the leaked 2.2 froyo they work perfect on ji6. no matter the kernel. which i tried speed mod. glitterballs .4. so ill go out and find an i9000 kernel.

I am running dill's 6.0 with kp1 modem, 2 days now heavy phone use talking, texting, browsing and downloading. Absolutely no connection issues with kp1 at all so far. No voice quality issues either.

miketucky350 said:
hi everyone. I have a captivate. live in america. Well i have had slow network speeds with jk4 jk3. jl1 jl2 plus poor call quality on the other end. ect. but the stock jh7. and the froyo leaked ji6 modems kick ass where im at. it even relialably plays youtube while on on the edge network.
Ive come down to di11is roms are the fastest. smoothest and the BEST gps. no bugs. has any one tried that modem on those roms? ie 6.0 . well i use that modem on some other roms and i know you need a matching kernel. so i flashed kernel then modem. still boot loops. anyone found a combo that works? is there a voodoo sound/lagfix kernel that works with this rom/modem. on cognition 3.04 i used .v4 gb kernel/ji6. and worked great. just have much love for di11is roms
Click to expand...
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If you read around, the pattern for modems is location based. It seems some modems work better in areas that other modems bomb out. I am going to take a chance and say you are in Kentucky if I read your user name correctly. It is helpful to others when talking about the modem that works best for you to be a little more specific then "I live in America". America can mean many different countries. (unfortunately in todays world climate it really only means one place)
Sorry just a pet peeve of mine.
For me in central florida jl2 has been the best. I will test ji6 to see how it goes for me. Hopefully it will become a preferred modem.
Again I am not trying to be a troll, sorry if it sounds like it.

phlunkie said:
If you read around, the pattern for modems is location based. It seems some modems work better in areas that other modems bomb out. I am going to take a chance and say you are in Kentucky if I read your user name correctly. It is helpful to others when talking about the modem that works best for you to be a little more specific then "I live in America". America can mean many different countries. (unfortunately in todays world climate it really only means one place)
Sorry just a pet peeve of mine.
For me in central florida jl2 has been the best. I will test ji6 to see how it goes for me. Hopefully it will become a preferred modem.
Again I am not trying to be a troll, sorry if it sounds like it.
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I don't understand that at all..... the only real difference is if the area covered is 850/1900 or 1900 only..... otherwise how can there be a difference?

shoman94 said:
I don't understand that at all..... the only real difference is if the area covered is 850/1900 or 1900 only..... otherwise how can there be a difference?
Click to expand...
Click to collapse
I do not disagree with what you say. But reading around there are very similar findings in specific areas. I will look for the threads in the morning. Nyquil kicking in.

im auctually from indiana. sorry for putting up america. At first this modem stuff didnt make sense. How 5 different modems will have 5 bars but each one has different results. would be nice if it was like a pc. windows or linux or mac. where if the drivers installed they just work. Its just such a deal breaker when i get to work and the net is just slow even with 5 bars. (jl1 jl2. jk3 jk4) but with ji6 it works great. and speed test are wayy higher. am now checking out deviant roms. found i9000 with voodoo and ji6. hmm might be able to get di11is working with ji6 here in a minute!

well tried firebird 2.0. tried few other kernals no luck. i flashed kernal first. then modem. no luck. firebird says works will all modems. ive tried. both 959 vibrant ji6 and ucji6 cappy modem. same result. sends it to boot loop. its something easy. is it because its a i9000 based rom? cog 3.04 it works with all those kernals ive tried on dillis

Best 850 Mhz modem? JPG, JQ1 or JL2?

So what is the general consensus? JL2 defaults to 850 while the others seem to require a staged flash to work... So it seems out of the 3 JL2 is the only one "mean" to be used for 850 right?
Anybody here that moved away from JL2 to another modem? what benefit did you get?

I don't see much difference between modems. I found wifi to be buggy with jl2. No issues with any others. I've used jpy and now jq1 and no issues with wifi or anything else. I still get 850 gsm just not 850 wcdma.
Sent from my GT - I9000M running Darky's 9.4 w/ Dark voodoo Kernel using XDA Premium App.

3G is a must. There is a way to get JQ1 on 850 WCDMA. Try here

{Angel}
Greetings. Please read my comment in http://forum.xda-developers.com/showthread.php?p=12297290#post12297290

seems like overly complex when jl2 just works and i am not having any issues with it on 2.2.1 ?

you´re probably right.

[Q] What modem to use?

Hi all,
Does it make a huge difference what modem is flashed to the phone?
If so… can any one tell me the best modem for Vodacom South Africa.
Thanks in advance.

I would like to know this too. Wasn't there a list of modems and what they are for? I saw it once before but now that I need it I can't find it anywhere.

See the thread below. Someone gave me a good answer yesterday with the list of modems.
http://forum.xda-developers.com/showthread.php?t=1091663

Thanks
Sent from my GT-I9000 using XDA App

depends on the band your country uses
for mine i needed 850 so i went for JL2 and it works perfectly

You have to try out all of them and pick one that suits for you. Every galaxy s is bit different and we live in different countries so it is impossible to the best.

[Q] Modems how do they work?

so i have a captivate, i love it. however my carrier has limited service where i live. i have seen people say they get better download and upload speed with different modems and i myself have flashed different modems and used speedtest app to see these differences. my question(s) are really as follows
can a modem give you better reception?
is it possible to make your antenna in your phone work harder to pick up better signal strength?
in general is there a way i can learn how modems work?
thanks smart peeps!
Gorship

bump
bump for hope.

Gorship said:
so i have a captivate, i love it. however my carrier has limited service where i live. i have seen people say they get better download and upload speed with different modems and i myself have flashed different modems and used speedtest app to see these differences. my question(s) are really as follows
can a modem give you better reception?
is it possible to make your antenna in your phone work harder to pick up better signal strength?
in general is there a way i can learn how modems work?
thanks smart peeps!
Gorship
Click to expand...
Click to collapse
First, a modem us the binary file that runs the antenna. So if we were able to control and edit the binary (which we can't) you could potentially make the antenna "work harder".
so a modem works by controlling, software wise, the frequencies the antenna uses. For example, I9000 modems tell the antenna to also pick up hsupa, and that is why I9000 based roms have faster data. The modem needs to also be compatible with the kernel so it can run properly. This is why e can't use modems like JK4 on captivate based Roms.
flashing a modem can increase signal. It is all about where you are though. JK4, which is a great modem in Boston, might not be a great modem in San Francisco, or Detroit.
there is a sticky thread in the development section for this with a website that will help you pick out a new modem. Make sure it is compatible with your kernel first.
Sent from my GT-I9000 using XDA App

There is not an easy answer to this (I don't think) but here is an interesting read that may be of some help (or at least an interesting read )...
http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Linux.Wireless.modem.html

4-2ndtwin said:
There is not an easy answer to this (I don't think) but here is an interesting read that may be of some help (or at least an interesting read )...
http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Linux.Wireless.modem.html
Click to expand...
Click to collapse
as detailed as it can get..thanks for the read...

viny2cool said:
as detailed as it can get..thanks for the read...
Click to expand...
Click to collapse
True... Detailed.. However, mostly irrelevant..
When you flash a modem, you're flashing an operating system for the communications chip. It's an entire stand-alone operating system designed to minimalistically receive and transmit data. The communications chip is capable of running an entire device. This is evidant when you examine the binary. It contains keyboard, mouse and display drivers.
When the Captivate was released, it was released as a 3G device, not H, so its communications chip was configured to work as a 3G modem. This was likely a marketing decision as "3G" was all the rave at the time.
A modem won't improve your reception unless your old modem was configured incorrectly
As far as signal strength, it won't improve unless your old modem was configured incorrectly.
There are several tweaks which are applied in each version of modem firmware for different devices. Unfortunately, the communications chip is locked down/Closed-source Qualcrap.. So, we will never fully understand what configurations are available, nor can we do anything other than test and see which one works more effectively.

hey thank you so much guys, this is really interesting, sadly a little depressing but interesting. i have one last question then, since i am running my i897 captivate... with the ICS rom, does this mean i should use i9000 or i897 modems? i heard that i9000 modems were just better then i897 so i am using them... but if the above is true, i shoud be using i897 to get proper configuration of my device.
you guys are all awesome and ill be mashing the thanks button!
<3 Gorship

U have to use the specific modems for ICS... See here... http://forum.xda-developers.com/showpost.php?p=16843698&postcount=1
And more specifically...See this page... http://soggycashew.weebly.com/cm7miui--ics-modems.html

yea im flashing a few of the ics i897 vs the i9000 i was using... still though... i have full bars with my old blackberry bold 9000 compared to my cappy which has 1 or 2... i dont understand why.