[Q] Galaxy S II Modem - Galaxy S II Q&A, Help & Troubleshooting

Hello everyone
I have a SGS II GT-i9100T which is a gift from my brother from New Zealand.
I´m running CM 10.1.3 and sometimes my signal drops, "Emergency calls only"! I´ve tested the Simcard on other phone and it´s fine.Could anyone suggest me a modem to flash to my phone?
I´m living in Germany and using O2-de.
Thank you.
Here is some info in case you need them:

i am not very sure whether geographical location affects modem or not, but there was a country based thread for India. They have some popular modems listed out here -
http://forum.xda-developers.com/galaxy-s2/general/i9100-modem-reviews-india-user-based-t2184193
You can get flashable modems here - http://veyka.co.uk/sgs2/radios/
have fun testing them.

Forget the fact you're in Germany; stick to modems bundled with stock roms released by carriers who sold the I9100T. Go to Samfirmware, use the pulldown boxes to make a list of all the stock roms released by carriers which sold the I9100T (there aren't many). If you click through each stock rom in turn it will list the modem - make a list of all the modems. Then search for CWM flashable versions of these modems on here (easily found with a search), download them, and start testing them out.
Only if you get to the point where you've tried all of these modems & they don't improve your connectivity should you consider flashing regular I9100 modems (I know this because I have an I9100T).
You might also be suffering from a long standing problem with CM roms where connectivity just goes away for no particular reason at all. The way you'd test if this is the case or not is to do a clean install of a stock rom released by a carrier which sold the I9100T (doesn't matter which, but don't flash 4.0.4).

I missed on seeing that the phone involved here is i9100T. My Bad.
Apologies for feeding you wrong info here.

sorry for "ruining" this thread, but:
1. How to know what the best modem is for you (I live in the netherlands).
2. Can you flash a modem on any android version? (I'm on carbon 4.4.2 rom).
3. Is it safe like rom flashing?

^^^
1) The way I always tell people to approach this is similar to what I said to the OP; go to Samfirmware, find all the stock roms released by your carrier, click through on each one & make a note of the modem. Search here/Google for CWM flashable versions of each modem, and test them out. If you find you go through all the ones bundled with stock roms released by your carrier & your connectivity is still bad, do the same with modems bundled with stock roms released by other carriers in your country. If your connectivity is still bad after that, flash any modem you can get your hands on.
But for most people, modems bundled with stock roms released by their carrier should work best; rationale being you'd hope the carrier would have fully tested them to ensure they work for most people most of the time on their network.
If your connectivity is currently fine, there's no need to go messing around with modems. Chances are you'll make it bad if you do I.E if it ain't broke don't fix it. Only mess around with modems if you have problems with connectivity.
2) Yes, modems are independent of Android version.Same risk as flashing anything else (I.E very small risk of the flash going bad with any given flash).
3) Risk should be minimal; I've never heard of anyone borking a phone with a modem misflash, but anything is possible I guess.

Related

[Q] How do I determine if a firmware is compatible with my device?

Currently running ICS via XXLPH on a GT-I9100P. Unfortunately, that version doesn't include NFC support, which annoys me, since I paid extra for a phone with NFC hardware.
My question is - I see via the sammobile page that there is a firmware update for my phone more recent than what I have, albeit one with a different PDA to my current one (I9100XXLPH vs I9100PBVLP8).
What exactly does this mean? Does this mean it's simply different software, but still designed to run on the same hardware? If so, it should be compatible with my phone, no? Or are there other things I should be checking for compatibility?
(Also - would that update even help with NFC?)
I recognize that ultimately whatever I do when screwing around is on me. And I realize that flashing a different official ROM is pretty tame compared to all the unofficial ROMs here (though most of them don't seem designed for the P version of the SGS2). But I'd rather not brick my phone at the moment.
Note - this is not a phone I got from a carrier, and I rooted it, so waiting for OTA upgrades is not an option.
Faqa42 said:
Currently running ICS via XXLPH on a GT-I9100P. Unfortunately, that version doesn't include NFC support, which annoys me, since I paid extra for a phone with NFC hardware.
My question is - I see via the sammobile page that there is a firmware update for my phone more recent than what I have, albeit one with a different PDA to my current one (I9100XXLPH vs I9100PBVLP8).
What exactly does this mean? Does this mean it's simply different software, but still designed to run on the same hardware? If so, it should be compatible with my phone, no? Or are there other things I should be checking for compatibility?
(Also - would that update even help with NFC?)
I recognize that ultimately whatever I do when screwing around is on me. And I realize that flashing a different official ROM is pretty tame compared to all the unofficial ROMs here (though most of them don't seem designed for the P version of the SGS2). But I'd rather not brick my phone at the moment.
Note - this is not a phone I got from a carrier, and I rooted it, so waiting for OTA upgrades is not an option.
Click to expand...
Click to collapse
make a bkp of ur exsisting rom and then flash the I9100PBVLP8 and see for the NFC issue if it resolves u can keep it else restore the original one back
since pda is the modem if its diff no issue u can always change the same if its not wrk'ng properly for u
Thank you. So all I should care about in ROM flashing is the underlying hardware? PDA and CSC differences should not brick my phone?
You may want to check this out it should add NFC to any rom.
http://forum.xda-developers.com/showthread.php?t=1407808

Galaxy note Lte Model: N7005 ( Singapore User )

Hi, I am opening this sub-forum for N7005 variant as its a closer relative to I717 than the international N7000 note.
So far, as read and tried from other earlier posts, I managed to root, flash CWM, flash TWRP and flashing of various roms from this I717 Forum without any issue, yet. No changing of modems. So far, no issue with basebands so 4g still works great.
Roms I have tried, the original Paranoid Android and the Cookies & Cream. Both are great roms.
Hope that the Mod dun close me down on here.
Cheers!
scpion said:
Hi, I am opening this sub-forum for N7005 variant as its a closer relative to I717 than the international N7000 note.
So far, as read and tried from other earlier posts, I managed to root, flash CWM, flash TWRP and flashing of various roms from this I717 Forum without any issue, yet. No changing of modems. So far, no issue with basebands so 4g still works great.
Roms I have tried, the original Paranoid Android and the Cookies & Cream. Both are great roms.
Hope that the Mod dun close me down on here.
Cheers!
Click to expand...
Click to collapse
Are you trying to say that you had use the same firmware to root your lte note using i717?
yup..
Followed this method.. TWRP same as I717.
http://rootgalaxynote.com/galaxy-note-i717-roms/how-to-root-att-galaxy-note-sgh-i717-icsgingerbreadeasiest-method/
Original thread that I read was from here
http://forum.xda-developers.com/showthread.php?t=1876490&page=2
This is a good thread. I have been trying to find the N7005 all over google and got very a little and mostly, 'irrelevant' results. I believe the note LTE might be a different from the N7000.
Would also like to know if you already have successfully installed the I717 custom ROM on your N7005?
Yes.
I am starting to believe ours have the exact same hardware as I717. It just carry a different model no because of the different baseband.
I have tried ( and successfully flashed ) the original Panaroid Android, the Cookies & Cream, Unofficial CM10 and Liquid Jelly. and also a kernel ( cant remember the name..) All worked well apart from issues with the standard bugs from the current developement of Jellybean. Just be careful not to touch the modem.
There is one little problem though.. I cant really find a convienent way for ours to flash back to stock or remove root if I ever need to send back for official servicing. The only solutions on the web suggest flashing US Carriers specific roms , which does not apply for us.
Well actually, there is a way to go back to official stock.. 2 day ago there was a minor update from samsung. so I flashed and it remove the root. And my firmware now read, Official Samsung.
I haven tried flashing again as I felt that though all the developers are working very very hard for JB and I do really appreciate the efforts , imo its not that stable yet.
Its pretty safe, I tried and they worked. BUT, PLS DO A BACKUP OF YOUR STOCK ROM!! Need any more info, I can share.
Disclamer: I will not be responsible for any kind of damage, bricked or blow ups...
And, U have to understand that if things goes wrong during flashing or any weird errors appears later, the developers are not oblige/not able to help as the I717 stuffs just " happen to work " on our device.
scpion said:
And, U have to understand that if things goes wrong during flashing or any weird errors appears later, the developers are not oblige/not able to help as the I717 stuffs just " happen to work " on our device.
Click to expand...
Click to collapse
I'm currently still stuck with my SGS, looking at N7005 when my contract expires. You said don't touch the modem, why is that the case? From my understanding you can just flash the baseband back on my SGS, is there an issue if you flash another modem on the N7005? Region issue?
The SGS have great international and local support. Any resources are readily available.
I717 is pretty much confined to the US. Their modems are specific to their baseband's bandwidth. There is no such modem in our region that u can safely flash that is guaranteed to work with our carrier. I know HK they have a forum for N7005 but its all in chinese. I am not too good in that. And, I dun see any real needs to flash the modem as well.
BTW, for local users that have a habit of flashing roms, I wouldnt recommend this model at all. The device is great but zero local support. I have even checked with Official Samsung Singapore and they dun even know if N7005 is getting JB but Original Note N7000 will be and the Note 2 will launch with JB. Go for more sensible options my brother...
I bought this purely because it was cheaper that time. And I traded in my nexus so this phone was basically free.. Then later I realise I will have the flashing "issues"..
scpion said:
The SGS have great international and local support. Any resources are readily available.
I717 is pretty much confined to the US. Their modems are specific to their baseband's bandwidth. There is no such modem in our region that u can safely flash that is guaranteed to work with our carrier. I know HK they have a forum for N7005 but its all in chinese. I am not too good in that. And, I dun see any real needs to flash the modem as well.
BTW, for local users that have a habit of flashing roms, I wouldnt recommend this model at all. The device is great but zero local support. I have even checked with Official Samsung Singapore and they dun even know if N7005 is getting JB but Original Note N7000 will be and the Note 2 will launch with JB. Go for more sensible options my brother...
I bought this purely because it was cheaper that time. And I traded in my nexus so this phone was basically free.. Then later I realise I will have the flashing "issues"..
Click to expand...
Click to collapse
I did look at the original note and S3, but what I wanted was larger display and I have a budget so I might not consider Note 2. I wanted to get LTE Note since it supports LTE and it would be a waste if we didn't make use of that.
I did see on starhub website that it states it is upgradeable to JB, but their website is always providing inaccurate information. Thanks for the recommendation, might reconsider. :good:
scpion said:
... I know HK they have a forum for N7005 but its all in chinese. ...
Click to expand...
Click to collapse
Can I have the link, please?
The 4g would come in handy for sure. I actually turned that off coz its eating my battery like theres no tmr..
Regards the HK forum, I dun have the link anymore.. ask Google my friend..
I realised the information on our local telco (Starhub) said processor is 1.4 Ghz, but the SHG-I717 is a 1.5 Ghz Scorpion.
Also the firmware stated on Samsung website says it should be ICS instead of GB, where Starhub says its GB and upgradable to JB?
So which is correct??
Look elsewhere for information. Believe the opposite of starhub. The specs they listed belongs to the international note N7000.
Hi dude, can u please show how u did to sucessfully to flash this stock roms to pandroid rom.. thank you in advance
p/s: im from Malaysia

[Q] bob austria best modem?

hey there,
are here some bob-austria-users using cm on the sgs2?
which modem do you use?
i have so much trouble with my data connection and even sometimes with gsm...
wär für jeden hinweis dankbar!
ps: radio/modem is independent from the rom and its version, isnt it? or does the rom-version affect the quality of the modem?
tyvm!!
kws
kweso said:
hey there,
are here some bob-austria-users using cm on the sgs2?
which modem do you use?
i have so much trouble with my data connection and even sometimes with gsm...
wär für jeden hinweis dankbar!
ps: radio/modem is independent from the rom and its version, isnt it? or does the rom-version affect the quality of the modem?
tyvm!!
kws
Click to expand...
Click to collapse
Goto http://samsung-updates.com/device/?id=GT-I9100 and look for the BOB/A1 Austria code (ATO). Click the link and you'll see that XWLPW was the latest Samsung ROM for the i9100.
Download it, flash it, look for the modem that goes with it, reflash your CM10.1 backup*, download the modem, done.
You'll now have the modem of your provider. This should be "the best". However, "the best" is a relative thing: what is the best for you, may not be the best for someone else. The only way to find out for yourself is to test signal strength and data speed in different locations and at different times. Possibly you're in a low reception region. And when you're roaming, a totally different modem may be best for you.
Or ask in http://forum.xda-developers.com/showthread.php?t=1131950.
Modem XXLQ6 and XXLPS were good to me. Try them. Now I'm testing an old modem of my provider (see my signature).
CM doesn't come with a modem, since it is used all over the world with lots of providers. If you're clever enough to flash a custom ROM, you'll be clever enough to find your modem
Maybe there is a modem/RIL mismatch. Install GetRIL free and flash a matching RIL. See also http://forum.xda-developers.com/showthread.php?t=1187681 and http://eric10234.wordpress.com/2012/10/23/samsung-galaxy-s2-i9100-jellybean-cm10-real-ril-crash/. Don't be scared about the RIL crash thing. It only happened to me with LS6 modem and/or RIL.
*When using stock Samsung, you maybe first have to flash a rooted kernel to get CWM Recovery. Use the method described in the CM9 thread or just flash the whole CM9 ROM using the Odin method.
Tip: when asking for help, always give information that is related to your problem.
So: what modem are you using; what modems have you already tried and what were the results; are you still on CM9 as your signature is suggesting? Also give general information like phone model (obvious), ROM name and version (saying latest nightly is silly, always name the date), modifications.
Edit: just finished downloading the XWLPW A1 Samsung ROM, extracted modem.bin, entered a hex editor, searched for the string xxl and found the text "120626.I9100XXLQ6". So I'm assuming that modem XXLQ6 comes with A1 Austria.
thank you for the detailed explanation...
i will see into it..
kws
Skully☺ said:
Goto http://samsung-updates.com/device/?id=GT-I9100 and look for the BOB/A1 Austria code (ATO). Click the link and you'll see that XWLPW was the latest Samsung ROM for the i9100.
Download it, flash it, look for the modem that goes with it, reflash your CM10.1 backup*, download the modem, done.
You'll now have the modem of your provider. This should be "the best". However, "the best" is a relative thing: what is the best for you, may not be the best for someone else. The only way to find out for yourself is to test signal strength and data speed in different locations and at different times. Possibly you're in a low reception region. And when you're roaming, a totally different modem may be best for you.
Or ask in http://forum.xda-developers.com/showthread.php?t=1131950.
Modem XXLQ6 and XXLPS were good to me. Try them. Now I'm testing an old modem of my provider (see my signature).
CM doesn't come with a modem, since it is used all over the world with lots of providers. If you're clever enough to flash a custom ROM, you'll be clever enough to find your modem
Maybe there is a modem/RIL mismatch. Install GetRIL free and flash a matching RIL. See also http://forum.xda-developers.com/showthread.php?t=1187681 and http://eric10234.wordpress.com/2012/10/23/samsung-galaxy-s2-i9100-jellybean-cm10-real-ril-crash/. Don't be scared about the RIL crash thing. It only happened to me with LS6 modem and/or RIL.
*When using stock Samsung, you maybe first have to flash a rooted kernel to get CWM Recovery. Use the method described in the CM9 thread or just flash the whole CM9 ROM using the Odin method.
Tip: when asking for help, always give information that is related to your problem.
So: what modem are you using; what modems have you already tried and what were the results; are you still on CM9 as your signature is suggesting? Also give general information like phone model (obvious), ROM name and version (saying latest nightly is silly, always name the date), modifications.
Edit: just finished downloading the XWLPW A1 Samsung ROM, extracted modem.bin, entered a hex editor, searched for the string xxl and found the text "120626.I9100XXLQ6". So I'm assuming that modem XXLQ6 comes with A1 Austria.
Click to expand...
Click to collapse
Great man....
Too much detailed
Sent from my iPhone using Tapatalk
AW: [Q] bob austria best modem?
@skully: tried your suggestion and it seems to be better... didnt get out much, though. i'll let everybody know my experiences after some more field trials...
hf&gl
kws
Hello kweso!
Any news to this topic? Is your data and gsm working better now??
THX
KR
Andy
yes, better. i flashed XXLQ6 now, as skully suggested and did not have any problems until now. it seems to be much better but i'll get back here, if something is changing...
hf&gl
kws

Problem with baseband, No Calls

Hi! This is my device
Device: Samsung Galaxy S2 gti9100
ROM: CM10.1 nightly 20130610
Android Version: 4.2.2
So I was having some trouble with my 3G, I was only getting 2G. So I decidded to flash a new baseband, which I found on here: http://d-h.st/users/ApriliaM3/?fld_id=7487#files
With this, I successfully got my 3G on, also 2G. But the problem now is that I can't make any calls!
No sure if its a baseband problem since I have 2G and 3G from carrier. Can anyone help me?
Thanks!
You haven't told us which modem you flashed (Tho it doesn't matter that much given you're going to have to change it anyway).
OK. You need to be methodical to fix this. So...
1) Start with stock roms released by your carrier. Find out which modems were bundled with those stock roms, and flash/test those first. Rationale behind this is you'd hope your carrier would have fully tested their stock roms before they release them including the modem, to ensure that the modem works with their network most of the time & in most places.
Still having problems ?
2) Stock roms released by other carriers in your country. Find out which modems were bundled with those stock roms. Flash/test those.
Still having problems ?
3) Flash/test every other modem bundled with every stock rom released by every carrier who sold the I9100 you can get your hands on (there are dozens).
And now that I think of it, if it were me in this situation & the problems persist after trying 1 (the modems bundled with your carrier's stock roms), I'd probably do a clean install of the rom I was using including a wipe/nuke in case there's something funky rom-side causing it.
If you're still having problems having done all that, you might want to do a clean install of stock & start with modems bundled with stock roms released by your carrier to rule in/out a CM problem.
And if it's still happening with a clean install of stock & using the modems bundled with your carrier's roms (which every 'ordinary' user who uses the SGS2 with your carrier & is running stock and doesn't mod their phone uses & has no connectivity issues most likely), it's either a carrier-side issue or a hardware problem.
What happend was you flashed modem/ril. Dont flash ril on custom rom. Bye bye imei. Have a look. Settings,about device, , status look for imei see of its blank.

[Q] Modems and bad signal strength

Hi,
I have some problems with modems and signal strength... I have search other threads but did not find anything really useful.
I bought an i777 when I was living in America for work, but now I'm back to Italy and I see that I always have bad signal (I've checked also with Better Battery Stats). I've tried different modems, but didn't see remarkable differences...
When other people asked for this stuff, the answer was almost always "install and try". Do you know if there is another way to test modems?
Since the i777 is from an American carrier, is it possible to port an i9100 modem?
Thank you!
Kefka88 said:
Hi,
...I've tried different modems, but didn't see remarkable differences...
Since the i777 is from an American carrier, is it possible to port an i9100 modem?
Click to expand...
Click to collapse
Short answer is no, i9100 modems will not work on an i777. While the devices are alike in many ways, modems from the i9100 aren't compatible (or portable) to the US variant. You can flash an i9100 modem and the phone will boot up fine, but you'll run into trouble with not being able to hear the caller/them hearing you. Normally this workaround would be to flash an i777 kernel with MicSwap capabilities, but that will have no affect on a modem as the baseband's are different.
Perhaps a longer answer than you needed. Sorry, I'm not aware of a real solution for you other than purchasing a different device for your region.
SteveMurphy said:
Short answer is no, i9100 modems will not work on an i777. While the devices are alike in many ways, modems from the i9100 aren't compatible (or portable) to the US variant. You can flash an i9100 modem and the phone will boot up fine, but you'll run into trouble with not being able to hear the caller/them hearing you. Normally this workaround would be to flash an i777 kernel with MicSwap capabilities, but that will have no affect on a modem as the baseband's are different.
Perhaps a longer answer than you needed. Sorry, I'm not aware of a real solution for you other than purchasing a different device for your region.
Click to expand...
Click to collapse
Thank you for the answer SteveMurhpy! I can't change phone right now, so I'll have to try the other modems... do you know if there is a faster/better method to test them than to install and try? And how much does the version of the OS interact with the modem? I am on Slimsaber right now... Thanks!
Kefka88 said:
Thank you for the answer SteveMurhpy! I can't change phone right now, so I'll have to try the other modems... do you know if there is a faster/better method to test them than to install and try? And how much does the version of the OS interact with the modem? I am on Slimsaber right now... Thanks!
Click to expand...
Click to collapse
I don't think the OS has anything to do with the signal strength, if it did it would likely be on older firmware such as GB, ICS and not the KK version you're currently running. As for the modem, unfortunately there's no way to test signal strength prior to flashing, so you're just going to have to keep trying them until you find one that works in your country.
One might suggest alternate APN settings, but that has more to do with functionality and speed rather than signal strength.
Sorry, as far as I'm aware there's no easy fix for you.
SteveMurphy said:
I don't think the OS has anything to do with the signal strength, if it did it would likely be on older firmware such as GB, ICS and not the KK version you're currently running. As for the modem, unfortunately there's no way to test signal strength prior to flashing, so you're just going to have to keep trying them until you find one that works in your country.
One might suggest alternate APN settings, but that has more to do with functionality and speed rather than signal strength.
Sorry, as far as I'm aware there's no easy fix for you.
Click to expand...
Click to collapse
I had some doubts about the compatibility between modem and OS because when I was back on SlimBean and I flashed a modem from GB the System UI kept crashing... but maybe there other types of problems, I didn't investigate that much.
Ok then, I'll keep trying... maybe I'll find the right modem for my country!
Thank you very much again SteveMurphy!

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