[Q] KJ2 modem - Captivate Q&A, Help & Troubleshooting

I am wondering if there is an alternative to the stock KJ2 modem. I am running rooted stock KJ2 rom with Boog's kernel. My download speed is decent at approx 2000kbps but upload speed barely reaches 300kbps! Any suggestions?

You won't see much better than that add none of the captivate modems support hsupa which is the BS 4g network they have. You would have to switch to an i9000 based ROM and modem
Sent from my SAMSUNG-SGH-I897 using xda premium

So this is the "trade-off" everyone talks about between audience chip support on i897 based roms and hsupa support on i9000 roms?

Yup. You can try all the modems found in the i897 section here some might offer a higher download speed but as for upload you wont see much faster past 300kbs.

I guess it's worth the trade off...
Thanks guys!

NamDark said:
I guess it's worth the trade off...
Thanks guys!
Click to expand...
Click to collapse
I think so... after all it's a phone at heart right??

No it's a miniature tablet that happens to make phone calls

Related

Wifi calling for T-Mobile

Hi will this work on the captivate?
http://m.pocketnow.com/android/how-to-get-wifi-calling-on-your-t-mobile-nexus-one
Assuming you start at step 7 skipping the cyanogen mod flashing.
And yes I am using a Captivate on T-mobile. My data plan does not allow for the usage of T-mobile branded Android phones.
Sent from my SAMSUNG-SGH-I897 using XDA App
Really? :facepalm:
What's wrong with those instructions? It seems as though it just adds certain functions to the kernel for the app too call on.
Sorry I am just trying to figure out how to get this working because I am in a no reception areas for about 5-7 hours a day. This would really help allow me to get service and possibly save on battery life so that the phone isn't searching for a signal constantly.
cappysw10 said:
Really? :facepalm:
Click to expand...
Click to collapse
There are some people who use the Captivate on T-Mobile. A few people have asked if it's possible to still add this feature in the Cognition thread and I have not seen an answer yet.
To answer the OP I'm not sure if it would be as simple as that since you're also flashing a kernel.
Sent from my Captivate
Has anyone tried?
Sent from my SAMSUNG-SGH-I897 using XDA App
if you read the instructions, you clearly need a modified kernel.
we don't have a kernel source to modify. on top of that, for the people who *can't* use it, it would just be a source of potential trouble. if you're on t-mobile and want to use t-mobile features, I suggest buying a t-mobile phone.
until we get sources, we likely won't see this on captivate kernel (as for a vibrant kernel, it's possible, but that has it's own source of issues)
johnny13oi said:
Hi will this work on the captivate?
http://m.pocketnow.com/android/how-to-get-wifi-calling-on-your-t-mobile-nexus-one
Assuming you start at step 7 skipping the cyanogen mod flashing.
And yes I am using a Captivate on T-mobile. My data plan does not allow for the usage of T-mobile branded Android phones.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Hey, come to the cognition IRC... I have some stuff you can test, I can open the app and such, but I am not on tmobile, so no way to test it beyond that.
Yeah when I get out of class ill gladly test out some stuff for wifi calling. Ill also have to figure out how to use Irc again. Any helpful guides? Wont be out of class until another 3 hours.
Sent from my SAMSUNG-SGH-I897 using XDA App
As an update, me and designgears tried several different combinations to try this out. So far I flashed a full Vibrant rom onto my Captivate and got the Wifi Calling to work. The keys were a switched because of the Vibrant Kernel but it was definitely working. Now if only we can port this feature over to the Captivate roms.
johnny13oi said:
As an update, me and designgears tried several different combinations to try this out. So far I flashed a full Vibrant rom onto my Captivate and got the Wifi Calling to work. The keys were a switched because of the Vibrant Kernel but it was definitely working. Now if only we can port this feature over to the Captivate roms.
Click to expand...
Click to collapse
are you serious about this? what other quality benifits are there from flashing the full vibrant rom? i'm using simplemobile which is a sister network to tmobile. If you can post a link to it with instructions on how to install it I would be glad to experiment with you!
I literally just flashed one of the custom Vibrant roms in the Vibrant section using Clockwork and it worked just fine. Just some of the buttons were misassigned due to it running a Vibrant kernel.
Did anybody ever got wi-fi calling to work on unlocked captivate on T-mobile network?
Flashing vibrant ROM sounds interesting, but I would prefer to keep captivate rom on captivate.
I wonder if any roms have implemented this yet. I've been looking but found nothing. It would be a great feature. And to all you smart asses that keep saying "get a vibrant," I'll gladly swap your vibrant for my captivate. No? Well this is the phone I have and that's what I'm modding. So keep it to yourself.
Wow, I'm on a 'pay as you go' plan on T-Moblie with my captivate. I would love this if it worked!
johnny13oi said:
As an update, me and designgears tried several different combinations to try this out. So far I flashed a full Vibrant rom onto my Captivate and got the Wifi Calling to work. The keys were a switched because of the Vibrant Kernel but it was definitely working. Now if only we can port this feature over to the Captivate roms.
Click to expand...
Click to collapse
So ... I have the Captivate and TMobile and need wifi calling. Can you help me? THanks.

[Q] Which ROM/modem? AT&T, GPS, HSUPA

I haven't flashed a new ROM in awhile and really don't want to have to go through every ROM/modem combination to find one that works for my needs. I know plenty of folks here go through almost every ROM that is available so I'm hoping to pick your brains.
1) I'm NOT asking "what is the best ROM". I <3 -all- of the ROM authors and don't wish to start that kind of mess.
2) I'm willing to try a couple of combinations to see.
3) My Cappy is brand new (I just exchanged my old one under warranty since I was one of those in the original batch that got the lovely random shutdown issue even with 2.1-update1) ... not sure if that is going to matter or not but I've read a lot of posts that seem to make it clear that different Cappy batches behave better with different ROMs.
So ... what I'm primarily looking for:
* I'm on AT&T so I need 850
* I would REALLY like to get improved GPS performance ... I don't want to buy a standalone GPS (wife has one, I'll use it when I have to) ... right now even with the GPS tweaks like Skyhook I'm just not getting acceptable lock times and it loves to break lock.
* HSUPA ... I'd like to enable HSUPA. I'm fortunate enough to live in an area with a new 3G tower and small population, which means I know there is more bandwidth available so I might as well use it. Especially since on occasion I need to tether.
* I don't want to lose noise cancellation
* I would like a ROM with good battery performance
Otherwise I'm not concerned with new features ... besides the issues above I do fine with the 2.1 ROM (not saying I don't want 2.2, just saying I don't care whether the custom ROM includes custom launchers, themes, etc). I would -like- working Bluetooth + HSUPA but my version of "working Bluetooth" doesn't care about voice dialing.
PS. I've read a number of threads on ROMs and modems ... but my brain hit information overload once I started trying to match up both. I probably could have settled on a single ROM -or- modem, but trying to get them to mesh well just didn't compute.
Everyone has different experiences with different roms. I know it's a cliche but it's true. I've had pretty much no gps in a rom that boasts about gps. Best to try each rom and see if you like any.
Sent from my SAMSUNG-SGH-I897
Personally I love my combo of darky's 9.1 with suckerpunch oc/uv kernel and the tjl3 modem. I really haven't used the gps much and so I can't say about that (make sure to use faster fix to get the right region). The battery life is all day for me and I use stereo bluetooth headphones all day. I really like the look too. I don't know if it has noise canceling though. Hopefully this is helpful.
HSUPA requires an I9000 based ROM with a matching modem.
I'm using Serendipity 5.0 with a JK4 modem.
Perception 10.3 with JK4 modem + Firebird2 0.8
ua549 said:
HSUPA requires an I9000 based ROM with a matching modem.
I'm using Serendipity 5.0 with a JK4 modem.
Click to expand...
Click to collapse
OR
Andromeda with an i9000 modem.....it works
ive had mine a total of 3weeks. I went with cog. 3.04 speedmod kernel. My problem is that none of the I9000 modems would work with it. Im running a jj4 modem. For 3g
Sent from my SAMSUNG-SGH-I897 using XDA App
ke5tny said:
ive had mine a total of 3weeks. I went with cog. 3.04 speedmod kernel. My problem is that none of the I9000 modems would work with it. Im running a jj4 modem. For 3g
Does your Bluetooth work with that combo?
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I897 using XDA App
I primarily use the wired one. Ill try it later tonite and will Post results
Sent from my SAMSUNG-SGH-I897 using XDA App
Ok. I get static on bt with my combo....
Sent from my SAMSUNG-SGH-I897 using XDA App
The only way to have noise cancellation is to stay with 2.1. From what I understand, att is the only one to have included the noise cancellation chip and since we do not yet have an official Att 2.2 source we can not take advantage of the chip.
Not sure on this one, but doesn't i9000 based roms have the bt static issue? And is the i9000 roms the only ones that let you have hsupa? Sorry a lot of information is on this site and I am trying to learn as much as I can.
Sent from my SAMSUNG-SGH-I897 using XDA App
Pirateghost said:
OR
Andromeda with an i9000 modem.....it works
Click to expand...
Click to collapse
+1
Started with the included modem (??), flashed jk4 with CWM (didn't help), moved to Telus JL3. I like JL3 better right now.
Just know that you have to pay attention to what ROM you're using. If you're running a I9000 rom, you have to use a I9000 modem.
Thanontos said:
The only way to have noise cancellation is to stay with 2.1. From what I understand, att is the only one to have included the noise cancellation chip and since we do not yet have an official Att 2.2 source we can not take advantage of the chip.
Not sure on this one, but doesn't i9000 based roms have the bt static issue? And is the i9000 roms the only ones that let you have hsupa? Sorry a lot of information is on this site and I am trying to learn as much as I can.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
The way to get Bluetooth to work on a i9000 Rom is to have a i9000 Rom +i9000 kernel +i9000 modem you will have both hspa plus Bluetooth working
Sent from my SAMSUNG-SGH-I897 using XDA App
yokozuna82 said:
The way to get Bluetooth to work on a i9000 Rom is to have a i9000 Rom +i9000 kernel +i9000 modem you will have both hspa plus Bluetooth working
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
But you wont have the audience chip working.
Sent from my SAMSUNG-SGH-I897 using Tapatalk
Also using Darkys 9.1 and find the battery life is great. The only I see is wifi stops connecting after 1 day or so, but a reboot brings it back up.
What improvements did you see with the suckerpunch kernel?
SSMI said:
Personally I love my combo of darky's 9.1 with suckerpunch oc/uv kernel and the tjl3 modem. I really haven't used the gps much and so I can't say about that (make sure to use faster fix to get the right region). The battery life is all day for me and I use stereo bluetooth headphones all day. I really like the look too. I don't know if it has noise canceling though. Hopefully this is helpful.
Click to expand...
Click to collapse
Also using Darkys 9.1 and find the battery life is great. The only I see is wifi stops connecting after 1 day or so, but a reboot brings it back up.
What improvements did you see with the suckerpunch kernel?
Captivate ROM
IMO just give me a Captivate ROM for my Captivate phone that's up to date without all the BS
gps1539 said:
Also using Darkys 9.1 and find the battery life is great. The only I see is wifi stops connecting after 1 day or so, but a reboot brings it back up.
What improvements did you see with the suckerpunch kernel?
Click to expand...
Click to collapse
+1
I got more or less 12 hours with that combo uv'ed to 800 mhz with active gps (my tracks) running for 3 hours, then music playing and playing angry birds and wifi active
But I had to calibrate my battery twice first
Swyped from my captivate
Please delete

Data speed on captivate based GB roam.

I know the data speed on captivate GB bootloader based rom will always be less than i9000 based roms. I recently switched from apex to pinnacle and I never get H just 3G which has horrible speed.
Can I fix by using i9000 modem? Are they compatible?
sent from my cappy rocking gingerbread
No. I try it and data and text work but cant make any call
You need to combine modem with Kernel. To my knowledge no I9000 gb kernel works on i897 rom. Also the speed difference is just upload.
prbassplayer said:
You need to combine modem with Kernel. To my knowledge no I9000 gb kernel works on i897 rom. Also the speed difference is just upload.
Click to expand...
Click to collapse
i noticed speed difference in basic internet surfing too. I dont H anywhere now which I used to have everywhere on i9000 roms...
Captivate roms, with the exception of the very latest leaks, don't show H, only 3G.
H= HSPA wich is only a upload speed increase. You can try different I897 modems see if you can increase your bandwith in your area. Personally I get about 3Mbs download and 300Kbs upload.
Edit: My observations are based on ATT network.
mrhaley30705 said:
Captivate roms, with the exception of the very latest leaks, don't show H, only 3G.
Click to expand...
Click to collapse
So by latest leak you mean KJ3?
sent from my cappy rocking gingerbread
I think it started with ki1, then the next couple had the H+, but the last one didn't. I think it is kj3.
H and 3G usually have about the same dl (HSDPA)speed. The difference is in the upload (HSUPA), which is capped at about 350-375kb/s. The i9000 modems don't have that upload cap built in. The H+ is only cosmetic at this point, until att starts increasing speeds through the towers.

[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.

Help choosing a modem.

I'm currently switching up ics roms and kernels to see which works best for me but I do not understand modems so I need some help here. I saw jk4 on the map close to me. I live in jacksonville fl and commute all around the city and west of jacksonville daily I was wondering which ones to try out.
Thanks
Sent from my SGH-I897 using XDA
donk232 said:
I'm currently switching up ics roms and kernels to see which works best for me but I do not understand modems so I need some help here. I saw jk4 on the map close to me. I live in jacksonville fl and commute all around the city and west of jacksonville daily I was wondering which ones to try out.
Thanks
Sent from my SGH-I897 using XDA
Click to expand...
Click to collapse
Just start downloading them and trying them, giving them about 2 days before you decide if you like it. Several factors to consider are call quality, signal strength, battery life, and GPS reception. Since your using ICS roms, you must use the modems packaged as CM7/MIUI. You try using something else and it won't flash.
Look >>HERE<< for all the modems you would ever want to try. (FWIW, I like BVJWW2)
Like mrhaley said, there are a variety of things that affect it. JK4 worked great for me when I was in Florida, so I would start there. JW2 is nice also, but it seems like people can't hear me as well with it.
Sent from my ICS Samsung Captivate
JK4 FTW! I've stayed with it since Eclair and it still works great now I'm on THS ICS. Great starting point to try out.
Sent from my SGH-I897 using XDA
I flashed jk4 just now. Im over my data limit so I will not be testing internet yet, if it works better I will see better battery life because service is better and faster internet? Is that right?
Sent from my SGH-I897 using XDA
I'm not sure about better battery life but call quality, data speed and connection stability will definitely improve if the modem is right for you
Sent from my ICS-powered Cappy
rheicide said:
I'm not sure about better battery life but call quality, data speed and connection stability will definitely improve if the modem is right for you
Sent from my ICS-powered Cappy
Click to expand...
Click to collapse
Better battery life will happen if it gives you better signal strength in the areas you spend the most time.
Sent from my ICS Samsung Captivate
korockinout13 said:
Better battery life will happen if it gives you better signal strength in the areas you spend the most time.
Sent from my ICS Samsung Captivate
Click to expand...
Click to collapse
Thanks for that info
hope can get some advice
Hello guys, a few days back I flashed teamhacksung's CM9 ALPHA for Captivate (BUILD 17) on my wife's phone, but she has told me that her apps are not syncing outside of a wifi connection.
I'm thinking it might be something related to the modem.
So I'm looking for any advice on which moden should I load, considering we live in Venezuela? Any tips?
Regards.
rupalazzi said:
Hello guys, a few days back I flashed teamhacksung's CM9 ALPHA for Captivate (BUILD 17) on my wife's phone, but she has told me that her apps are not syncing outside of a wifi connection.
I'm thinking it might be something related to the modem.
So I'm looking for any advice on which moden should I load, considering we live in Venezuela? Any tips?
Click to expand...
Click to collapse
Someone listed the "UGKC1" modem in use in Panama. You might consider UGJL2 or UGKG3 also, near by. Search "soggy cashew captivate modem" and check the map. Update your own listing if you find something that works.
rupalazzi said:
Hello guys, a few days back I flashed teamhacksung's CM9 ALPHA for Captivate (BUILD 17) on my wife's phone, but she has told me that her apps are not syncing outside of a wifi connection.
I'm thinking it might be something related to the modem.
So I'm looking for any advice on which moden should I load, considering we live in Venezuela? Any tips?
Regards.
Click to expand...
Click to collapse
That is a bit out of date, you probably should flash a newer build
Sent from my ICS Samsung Captivate
Thanks for the info guys, had to flash elite v. 10.1 rom, this was the only rom that would enable data service.
Tried:
AOKP-captivatemtd-build-35
F1-galaxynexus-galaxys-20120502-beta2
Nostalgia-b31-v5.4
Team ICSSGS
CM9-20120510-nightly
CNA-1.5.5
Dark Knight v5.5
Elite v.10.1 was the only rom that connected data service.
The good things is that my wife likes it as is right now, which makes it easy on me. Hehehe.
Regards.
Sent from my GT-N7000 using XDA

Categories

Resources