Best modem for US AT&T? - Galaxy S II Q&A, Help & Troubleshooting

I have the i9100 that I am using on AT&T in the US and I am currently using the LPQ baseband, but have used XXKI3 and KI4 as well. Anyone in the US have any preference or one that has worked best for you on AT&T?
Sent from my Transformer TF101 using XDA Premium HD app

Switched back to the XXKI3 baseband and I seem to have better reception for data and voice.

Trying the XXKPA from Veyka

KL1

I'm on baseband KI3. Works fine.

LPQ works best for me.

I keep trying the ICS modems and always have returned to KI3. It has issues, but definitely is better for me in the North suburbs of Chicago than anything else so far.

In my experience, KL1 is the best performing modem (in the Houston, TX area at least). My speeds are around 6-8 Mbps down/1-3 Mbps up depending upon the time of day. Browsing, the Play Store, and several news apps are much more responsive on KL1. To be fair, I haven't tried KI3, though. (Flashed KI4 - see update below)
I tried LPQ on ICS modded ROMs and was lucky to get 1 Mbps/150 Kbps speeds. Likewise, all other Internet-based apps were slllloooooowwww (think original Blackberry Pearl and 8300 devices). I must have tried 20 different APN configurations, but they were all the same.
Long story, short - in the Houston, TX area, KL1 or KI4 both seem to work well as compared to LPQ.
[UPDATE] - Since I was just sitting here browsing XDA, I figured I would try KI4. It's a little better than KL1, especially with the upload. Five tests on KL1 at 3:00 pm CDT returned an average of 5.8 Mbps down/1.2 Mbps up. KI4 gave me an average of 5.9 Mbps down/1.6 Mbps up. Internet-based apps felt the same on either KL1 or KI4. Ping times also were the same at 80ish ms.

Delete.

rdubyah said:
Located in South-central PA here and have been testing the hell out of KI4 and KL1 and the results are amazing, they are the 2 best modems to use in my opinion for my area, I travel to Philly and Jersey a lot and have never had one drop signal in the past 4 weeks I've had these two radios on my phone. 2 weeks a piece and have nary noticed a bit of difference except that KL1 gives me slightly better battery life.
Click to expand...
Click to collapse
Excellent - I am using XXLPR right now and seem to be getting great battery and speeds

I am using KI3 and getting good speeds here in California. I also tried KH3 and LPS and LP9 and i still get better speeds w KH3 but LPS and LP9 are not bad.

I am using KP8 right now after trying LPQ and NELP3... Both of those had great speeds but terrible battery consumption
--
I used to be fast until.... nah still fast.
-jerdog
Sr. Moderator / XDA News Writer
sent from my GT-i9100 from a galaxy around the corner

jerdog said:
I have the i9100 that I am using on AT&T in the US and I am currently using the LPQ baseband, but have used XXKI3 and KI4 as well. Anyone in the US have any preference or one that has worked best for you on AT&T?
Sent from my Transformer TF101 using XDA Premium HD app
Click to expand...
Click to collapse
I am not from US, but you can test KE7 even though it is old...
my test result of KI4 & KE7 : http://forum.xda-developers.com/showpost.php?p=23073982&postcount=951

Can you use a GB modem on ICS? I used ki1 on checkrom and had decent speeds.
Sent from my GT-I9100 using Tapatalk 2

gadget069 said:
Can you use a GB modem on ICS? I used ki1 on checkrom and had decent speeds.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
Any modem can be used regardless of the Rom version.
Thanks to SAMSUNG, there is no RIL packeges for MODEMS to suite with ROM like HTC devices.

are we talking about XXKL1 ? because there is a few other modems that end in KL1. Thank you.

Anyone find a good ICS modem to use with AT&T yet? I ask because it doesn't seem possible to use a GB RIL with an ICS ROM so I'd have to upgrade to an ICS modem to get the RIL and baseband to match.

yokuyuki said:
Anyone find a good ICS modem to use with AT&T yet? I ask because it doesn't seem possible to use a GB RIL with an ICS ROM so I'd have to upgrade to an ICS modem to get the RIL and baseband to match.
Click to expand...
Click to collapse
You can try an app called getril from the play store. Just be careful, I've heard mixed reviews of it
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kilometers4 said:
You can try an app called getril from the play store. Just be careful, I've heard mixed reviews of it
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
That doesn't exactly help with finding a modem though.
Anyways, I'm trying out BVLP7 with a matching BVLP7 RIL and so far it's working better than XXKL1.

yokuyuki said:
That doesn't exactly help with finding a modem though.
Anyways, I'm trying out BVLP7 with a matching BVLP7 RIL and so far it's working better than XXKL1.
Click to expand...
Click to collapse
There are many threads with modems. Have you searched for them?
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Related

Very low signal with ICS

Hi all,
I'm getting very low signal in my phone, only one or two bars with passion v13 and now with ICS euphoria even when being next to the window.
I get excellent signal in a HTC G2.
Does anyone have a similar problem?
Sent from my SGH-T959 using XDA App
Flash a new modem. Scrizz has a bunch especially for ICS.
I forgot to mention that I have already tried several modems: ka7, ka6, jksomething, but nothing changes.
Try a different city or a different phone... or a different cell company
sent from the xda app on my android smartphone.
I'm right around Chicago it is an ICS issue. My gf has miui and kb5 with 3 bars of H. I have currently 1 bar 3g same setup on euphoria.
Sent from my SGH-T959 using xda premium
You could always try the CM9 alpha or icssgs, see if there is any difference
If changing modems makes no difference, then it must be the rom.
cashmundy said:
You could always try the CM9 alpha or icssgs, see if there is any difference
If changing modems makes no difference, then it must be the rom.
Click to expand...
Click to collapse
Unfortunately its all of them. The only fix I have found is getting off ICS. Once the newest glitch kernel is back ported for cm7/miui.us I won't be able to careless lol.
P.S. this reply would not be possible on ICS, I am at work right now.
Sent from my T959 using xda premium
Interesting. I should have mentioned kernels (many to choose from), but it sounds like you might have tried a few of them also. Good luck.
You might want to discuss it in one of the ICS rom threads, or the modem thread:
http://forum.xda-developers.com/showthread.php?t=1399722
Phoenix Down.
Every ICS I experience this on until Docs V5. My phone is useable at work again on ICS. It's worth a shot if low signal is what is holding you back from 4.0.
Sent from my SGH-T959 using xda premium
I am also in Chicago running Euphoria no issues with signal strength. I also work for T-Mobile and can tell you a bad SIM card is the most common reason for signal issues ;-)
jay.dub said:
I am also in Chicago running Euphoria no issues with signal strength. I also work for T-Mobile and can tell you a bad SIM card is the most common reason for signal issues ;-)
Click to expand...
Click to collapse
If someone requests a new SIM card from T-Mobile, do they get to keep the same phone number? Also, I've had my Samsung Vibrant's battery since around Oct 2010. How much longer would you think this battery will be good 'til?

[5/30][MOD] T-mobile ICS Radios KID/VK1/S2/Blaze |Stable|Fast|

T-mobile ICS radios
I've been messing around with radios for a while. I decided to release some for the Note. These focus on both speed and stability. So far some of the ics based radios released for the note have resulted in breaks in data service, data roaming, or simply are not compatible. The radios in this post will provide you with better speeds and stability.
What's Included:
Code:
- Latest UCLE2 Modem
- Modified ICS Blaze Radio
- Removed unnecessary files
- Increased 4g speeds on AWS
[/Quote]
User Experience:
Code:
- Arizona: 6-7 mbps down and 2 mbps up
- San Francisco: 8mbps down and 1.5 mbps up
- Ontario: Wind Mobile 9 mbps down 2.3 mbps up
- Florida: 11.5 mbps down and 1.3 mbps up
- Maryland: 7 mbps down and 1.7 mbps up
- Bell Mobile 12 mbps down and 1.7 mbps up
Click to expand...
Click to collapse
Downloads:
1) T-mobile Blaze ICS Radio: http://www.mediafire.com/?suusz2ho9587bts
2) UVLK1 based ICS radio http://www.mediafire.com/?ngiyupwyul8r213
3) KID based ICS radio http://www.mediafire.com/?w3k83gsmj0b4052
Other Things:
If there are other T-mobile based radios you prefer just let me know and I will try to port. Also, please report how effective these radios are, and if you are experiencing any issues.
Installation Instructions:
Code:
- Download preferred version of Radio
- Boot into clockwork recovery
- Install Radio from SD Card
- Boot it up, wait till it connects
- Fix APN settings as necessary
- Now your good to go!
* DO NOT flash over fresh install for better results *
Click to expand...
Click to collapse
Thanks:
- Flapjaxxx for pulling the UCLE2 Modem
- Blownco for his awesome server
- Novembre5 for testing
NOTE: If you like my work please hit the thanks button! If you would like to donate feel free but I won't be posting a link on the thread.
Click to expand...
Click to collapse
I'm using cm9. Will try it in the morning and report back. Its 430am here in southern Cali.
Sent from my SAMSUNG-SGH-I717 using xda premium
dhoang said:
I'm using cm9. Will try it in the morning and report back. Its 430am here in southern Cali.
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
same here lol i'm at AZ been up studying then... got distracted -.-
tspx23 said:
same here lol i'm at AZ been up studying then... got distracted -.-
Click to expand...
Click to collapse
Final? Good lucky buddy. I'm going to sleep now.
Sent from my SAMSUNG-SGH-I717 using xda premium
Link doesn't work... file does not exist.
yes it does. i just downloaded it
dhoang said:
Final? Good lucky buddy. I'm going to sleep now.
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
i'm taking my mcats/gmats soon.
wish they could be as easy as finals.
anyways... new update coming with UCLE2 I'm getting 6-7mbps and 2mbps up.
themachfive said:
Link doesn't work... file does not exist.
Click to expand...
Click to collapse
Same for me when i tried to download it through the phone. try downloading it on a pc and it should work fine.
Tested the modem on AOKP (juggernaut) and i'm getting about the same as the SGII leaked modem (avg 5-6down and .3-1up). trying on cm9 now
soapbox23 said:
Same for me when i tried to download it through the phone. try downloading it on a pc and it should work fine.
Tested the modem on AOKP (juggernaut) and i'm getting about the same as the SGII leaked modem (avg 5-6down and .3-1up). trying on cm9 now
Click to expand...
Click to collapse
just posted a new one. and yea speed tests are screwy on aosp because it switches from 3g-4g
here's a mirror if its needed
BLOWNCO SERVER
Guilty as charged.. I was trying to do this by phone.
Side note, my data connection is spotty while using the 1700 band. Mind you I live in a large city where signals are great. My tmobile vibrant had no issues.. any thoughts?
Kinda confused me with the date its may not march lol 5/29 testing now thank u for this
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bbobarino said:
Kinda confused me with the date its may not march lol 5/29 testing now thank u for this
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
My bad it was a late night lol. I just posted yesterday.
tspx23 said:
I've been flashing all these ICS Roms but still getting a subpar t-mobile connection. I decided to try my hand at porting some ICS radios that would enable 4g on the Note.
1) T-mobile Blaze ICS Radio: http://minus.com/mWc0nIPPa/
Tested on AOKP and CM9 RC5. 6-7mbps down 2mbps up.
Not tested on samsung UCLE2 leak but it should work since its based off the UCLE2 modem.
2) Kid based ICS radio coming
3) UVLK1 based ICS radio coming
Telus? Other T-mobile based roms let me know and I will try to port. Just a little busy these days but I hope to update it along with new modems that are released for the Note.
Click to expand...
Click to collapse
5/29*
Sent from my SAMSUNG-SGH-I717 using xda premium
any difference on ics blaze modem from jeet's and yours?
http://forum.xda-developers.com/showthread.php?t=1573568
I'm wondering the same thing.
PENKO956 said:
any difference on ics blaze modem from jeet's and yours?
http://forum.xda-developers.com/showthread.php?t=1573568
Click to expand...
Click to collapse
Yeah I believe this blaze modem is a different version than jeets. I haven't flashed his to tell you if there is a difference I just used the latest ones that are available.
tspx23 said:
Yeah I believe this blaze modem is a different version than jeets. I haven't flashed his to tell you if there is a difference I just used to latest ones that are available.
Click to expand...
Click to collapse
im getting good speeds (3-5d 1-2u) with jeets new ics blaze modem 5/28
Ill try yours 5/29 and report later.
I was using one of the GSII radios for ICS before on OnlyOne and CM9 with poor results. I was frustrated with constant notifications of data service loss and an inability to pick up EDGE/3G/HSPA+ after leaving an area with no reception. That issue could only be fixed with a restart. Additionally, speed tests were irrelevant due to ridiculous latency issues, but I never got anything above 1-2mbps.
I flashed your radio this morning and could not be happier. My downtown San Francisco speed tests were seeing 80-150ms latency with 8mbps down and 1.5mbps up. Thank you for saving my Note!
richmang said:
I was using one of the GSII radios for ICS before on OnlyOne and CM9 with poor results. I was frustrated with constant notifications of data service loss and an inability to pick up EDGE/3G/HSPA+ after leaving an area with no reception. That issue could only be fixed with a restart. Additionally, speed tests were irrelevant due to ridiculous latency issues, but I never got anything above 1-2mbps.
I flashed your radio this morning and could not be happier. My downtown San Francisco speed tests were seeing 80-150ms latency with 8mbps down and 1.5mbps up. Thank you for saving my Note!
Click to expand...
Click to collapse
Thanks for doing the comparison! I was experiencing the same issues with some of the other ones.
I'll update the the thread with more radios by the weekend hopefully they will show improvements as well.

XXLQ5 vs LPS MODEM for galaxy s2

Hi everyone
Has anyone seen any difference between the new xxlq5 modem against lps?? I seem to get slow speed but more bars.
Wondering if anyone else tested or saw any major difference. Just living for suggestion really.
Sent from my GT-I9100 using xda app-developers app
Every network is different so every modem will respond differently so your question is stupid. For me, in the south of the UK on 3, LPS is better but LPS still isn't as good as the good ol' modems like KI3. Keep flashing modems until you find one that works for you based on your network and location.
Thanks and no thanks because a question is never stupid but answers are.
However i am on three UK in south east. Have flashed lps which seems to be good but gonna try ki3 to see what's that like. Have flashed almost all the ones which are available from the past but i was looking for a generic answer to see if people have found any significant difference as end of the day modems are related to the handset model than network!!
Sent from my GT-I9100 using xda app-developers app
Erm, are you in the South East on an exchange?
Anyway, I got "generic answer" - no there isn't one, and no modems aren't related to the handset model, if that's what you're trying to say.
Keep trying modems until you found one you like, out of all the modems I've ever tried there has been difference, but really not much.
Edit after seeing the tags, who sets them? hahahahaha, brilliant.
Hey guys .. never mind what would be the modem that u'll flash but i just want to confirm that if you want to test a modem please see it effect after 48 H don't know why but i can see that the performance is stabilized in 48 H
Sent from my GT-I9100 using xda premium
Thanks Mo. I wonder why 48 hours? Its a software driver written to run a piece of hardware so shouldn't have a time related issue?
Sent from my GT-I9100 using xda app-developers app
Time isn't so much an issue, but you should probably test a modem in different locations/at different times of day for a bit before you decide whether it's a dud or a keeper so far as connectivity/data is concerned. If you use it once & get average reception/data speeds (as opposed to crappy from the get go; if it's that bad you can assume it's a dud), how can you possibly know that wasn't a temporary network issue ?
When I tested a bunch of modems after switching to CM9 ~4 mths ago, I tried ~12 modems. A few I tested for 5-10 minutes & decided they were no good pretty much immediately because they were significantly worse than the modem I was using at that time (very poor/no connectivity). And the other 8 or so I tested over 2-3 days each to get an idea of what they were like. In the end I stayed with the modem I'd been using for the previous few mths and am still using that modem now.
Same here. Using lps have tested ki1,ki3,ki4,nelp3,nelp4,kh3,lq5. But i think lps beats them all on 3 (UK) in London. Does anyone know when Samsung is going to release this 4.0.4 officially on kies? As that might pack a new driver/modem.
Jelly beans isn't coming to s2, which i can understand from revenue point of view.
Sent from my GT-I9100 using xda app-developers app
You're on XDA, Jelly Bean is already on S2s. I might be wrong but isn't LPS the 4.04 modem already. The difference between modems is no negligible and newer isn't necessarily better. How are you doing these tests?
Mate you need to grow up a bit more and research before you make statements. Jelly bean is only started off as being ported in gs2 and half of the stuff doesn't work. So i don't know where you are coming from.
And LPS came with 4.0.3 xeu, lq5 is with 4.0.4
Sent from my GT-I9100 using xda app-developers app
Android 4.0.4 for Russia is out, just flashed the Rom and indeed its smooth. Better than leaked one. XXLQ6 seems to giving good speeds.
Now won't be too long until xeu models get it first.
Invincible29 said:
Mate you need to grow up a bit more and research before you make statements. Jelly bean is only started off as being ported in gs2 and half of the stuff doesn't work. So i don't know where you are coming from.
And LPS came with 4.0.3 xeu, lq5 is with 4.0.4
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Sent from my GT-I9100 using xda app-developers app

[Q] Slow H+

I recently installed Omega V8.0 on my Galaxy SIII. Previously I had good H+ connection with stock ROM (Telenor Branded, with Telenor CSC). But after rooting and Custom ROM, my connection is getting pretty slow.
Should i try to flash Nordic or Telenor CSC? Will it improve my H+ connection?
Current
AP: I9300XXBLFB
CP: I9,00XXLFB
CSC: I9300EURBLFB
Any help is mutch appreciated. :good:
Your CSC doesn't change the speed, the modem does.
You can try flashing your old modem again, or try out other modems until you've found a satisfactory one.
Note that the faster/more stable modems always drain more battery.
I prefer it that way though, what good is an expensive phone to me if it's slow but can stay alive > 24 hours?
Thanks man, that clarifies a lot for me. Should I leave CSC as it is?
Gonna try out new modems when I get back home.
Sent from my GT-I9300 using xda app-developers app
Flashed to my previous modem I9300XXLE8, and getting solid E/3G connection..
Sent from my GT-I9300 using xda app-developers app
You should check if you can still do voice calls... People have been experiencing problems with this update and mixing modems with it.
Sent from my GT-I9300 using xda app-developers app
You are so right, had issue with voice calls. Flashed back to I9300XXLFB, and no problems with voice call. However I feel that 3G has somehow improved
Anyway thanks,
PS I need some thanks to climb XDA ranks
Sent from my GT-I9300 using xda app-developers app
Yeah only the XXLFB modem works with the XXLFB rom for now :S I found my H+ wasn't amazing, but H works awesome? I would have thought H+ should be faster than H?
I am having another issue, ill just post it here. I recently flashed Omega V9.0. But when i try to flash "Extended Power menu.zip" or "Home button lag.zip", CWM says it's bad zip. Yes, i updated Omega Files to V1.05
Any suggestions?
dantheman122 said:
Yeah only the XXLFB modem works with the XXLFB rom for now :S I found my H+ wasn't amazing, but H works awesome? I would have thought H+ should be faster than H?
Click to expand...
Click to collapse
I found my H+ wasn't amazing, but H works awesome? I would have thought H+ should be faster than H?
Click to expand...
Click to collapse
H+ is a newer version/revision of HSPA. There can be multiple reasons why it's slower for you:
- the HSPA+ capable antenna is probably overloaded
- you have a better signal with the antenna running the old revision
CWM says it's bad zip.
Click to expand...
Click to collapse
Re-Download the files. They are probably broken.
I have tried several times to download the files, ill try again with 3G connection instead.
V9.0 is awesome
Sent from my GT-I9300 using xda app-developers app
Managed to download the files, flashed perfectly. Thanks again
Sent from my GT-I9300 using xda app-developers app
I am experiencing slightly glitchy animations with TW launcher. Will flashing another kernel improve this?
I prefer smoothness above all like battery and performance.
Can someone recommend a custom kernel? I am currently on latest Omega V9.0 and stock insecure kernel.
Sent from my GT-I9300 using xda app-developers app
Help
Sent from my GT-I9300 using xda app-developers app
ali_gee said:
I am experiencing slightly glitchy animations with TW launcher. Will flashing another kernel improve this?
I prefer smoothness above all like battery and performance.
Can someone recommend a custom kernel? I am currently on latest Omega V9.0 and stock insecure kernel.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
All I can say is I'm running siyah's latest kernel on Omega 9.0 and my phone's flying with excellent battery life and no visible lag.
Give siyah's kernel a try. :thumbup:
Sent from my GT-I9300 using Tapatalk 2
It's noteworthy that you should install the ExTweaks app (free) from Play Store. It allows you to tweak several parameters of the kernel either for performance or battery life. I always go with performance on all.
Stay clear from the overclocking parts of the CPU/GPU sections though, the phone is fast enough as-is even if some people seem to believe their (mostly SSD-related) lags are gone by overclocking. Placebo ftw
Thank you guys. I flashed Siyah, and I have no lag whatsoever. Battery is okay too. I downloaded ex tweaks, but I didn't bother to alter settings, as I don't see why I should yet.
Should I just leave them on default?
Sent from my GT-I9300 using xda app-developers app
s3 can take a lot of uv, i have undervolted cpu by 75mv and gpu by 50mv and have no issues, phone runs cooler too, try uv in stages, 25, Then 50, then 75 You just have to change the audio as this makes a massive diffetence
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gsw5700 said:
s3 can take a lot of uv, i have undervolted cpu by 75mv and gpu by 50mv and have no issues, phone runs cooler too, try uv in stages, 25, Then 50, then 75 You just have to change the audio as this makes a massive diffetence
Sent via TCP/IP
Click to expand...
Click to collapse
Yeah, they're the two things I alter. UVing and Audio. ExTweaks app is awesome!:laugh:

What is the best modem for Chile?

I've been playing with the rom of my phone, now i am in NeatRom it has an amazing battery life, now i want to know what differences makes changing the modem, and what is the best for Chile, Claro-chile company, thanks you all for help me, sorry if i made some mistakes writting this thread.
Well... I used LPS in cm9 and worked really well. No overheat, good battery life.
Now on cm10, experienced overheating with LPS and flashed LQB. Now it works as it should.
Note that it's only my experience and you have to test modems by yourself.
entel, Santiago.
Sent from my GT-I9100 using xda app-developers app
Take a look a this post
http://forum.xda-developers.com/showthread.php?t=1131950
it may help you
Normally I'm using KI4, but now in CM10 I have LP6 modem and it drains very little battery in idle mode with wifi on.
Can I know about the best modem for Singapore?
While im here, whats the best moden for Sweden (telia)?
Sent from my GT-I9100 using xda app-developers app
rumirand said:
Well... I used LPS in cm9 and worked really well. No overheat, good battery life.
Now on cm10, experienced overheating with LPS and flashed LQB. Now it works as it should.
Note that it's only my experience and you have to test modems by yourself.
entel, Santiago.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I've flash LPS, how i said before, i am in NeatRom 4.0.4 amazing battery life, and hope that with this MODEM will be better thanks you all, tomorrow i'm gonna post how it is going!
What modem are you using? I need one for CM10.1 for my i9100 Movistar.. Im using now UHLPF(with same ril).

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