Little or no signal. - Samsung Epic 4G Touch

I had flashed to an AOKP rom a while back and had since had a very significant and noticeable drop in signal strength. So much so that I was unable to get a signal at all in places when I would normally have 2-3 bars. Other people still get signal in those places with the same service provider. I decided to try to flash different modems to try and fix the problem. I have since tried 3 different JB modems from rogerwilco's modem repository for the E4GT. Every single one I have not been able to get a data connection at all. At most I have been able to get 1-2 bars and no data connection. Even if my signal strength was low I could care less as long as I could get a data connection at all... can someone please assist me? Has anyone else been running across any other type of issue? I also wanted to know... when I update profile and PRL... is this stored in /data or does it burn it to the same area of memory as the modem image? Primarily... does it get wiped when you wipe data?

Goblinlord said:
I had flashed to an AOKP rom a while back and had since had a very significant and noticeable drop in signal strength. So much so that I was unable to get a signal at all in places when I would normally have 2-3 bars. Other people still get signal in those places with the same service provider. I decided to try to flash different modems to try and fix the problem. I have since tried 3 different JB modems from rogerwilco's modem repository for the E4GT. Every single one I have not been able to get a data connection at all. At most I have been able to get 1-2 bars and no data connection. Even if my signal strength was low I could care less as long as I could get a data connection at all... can someone please assist me? Has anyone else been running across any other type of issue? I also wanted to know... when I update profile and PRL... is this stored in /data or does it burn it to the same area of memory as the modem image? Primarily... does it get wiped when you wipe data?
Click to expand...
Click to collapse
JB modems don't work on the aokp roms..... I think... Not sure.
Sent from my SPH-D710 using xda app-developers app

E4GTUser94 said:
JB modems don't work on the aokp roms..... I think... Not sure.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Interesting... I have to say... it is rather difficult considering I can't find much as far as compatibility information for modem images... not with between versions anyways. Meaning... what is compatible and works with what. All I can seem to find out is what stock image they came out of.

JB modems only work with JB touchwiz based roms. All other modems work fine with all other roms. The FI27 modem worked just fine for me on various aosp roms.

The FL24 modem works great for me on AOSP. The leaked JB modems do not work on AOSP. I didn't have great luck with them on stock rooted roms either though (FK23 and FL04).

I would try a stock rooted build like FK23 and run it for a while and see if you get your signal strength back.
Them you can figure out whether it's your radio or Rom.
Pp.
sent from a jellybean filled epic touch.

PanchoPlanet said:
I would try a stock rooted build like FK23 and run it for a while and see if you get your signal strength back.
Them you can figure out whether it's your radio or Rom.
Pp.
sent from a jellybean filled epic touch.
Click to expand...
Click to collapse
Actually, flashed to an ICS radio and it started working.

Related

[Q] stupid question about radios and/or modems

Can someone please explain to me radio updates? Are they the same thing as modems updates?
I recently changed my stock epic 4g to Syndicate Frozen and I have noticed that where I used to get a wonderful wifi signal, it can hardly pick up a signal. Not at my home, but in other places.
So I recognize this needs some tweaking, but I could use some knowledgeable well explained info before I just start updating. I've made mistakes before that has brought the odin out in me when I act without haste so I'd rather not go through that for the forth time
Any info and or links would be greatly appreciated.
Development section?
Sent from the future.
Yes
That's where I found the ROM.
Maybe a special radio or modem is needed to properly supplement the ROM.
Sorry if I offended you.
I don't know much lol but I believe they are the same (radios & modems). Its a very simple flash with odin just put modem.tar in phone slot not pda, takes maybe 30 second for a modem. But as it goes backup first always. Also, hate to tell you but you posted this in the wrong area. This thread should be in q&a section.
Sent from my SPH-D700 using XDA Premium App
I appreciate your response, but I'm looking for more info on specifics. What radio is best for wifi or what radio is best for 4g or what radio is best a custom ROM.
I suppose I'll post elsewhere. I hope I can find the right place to post these sorts of questions.
jameskever said:
What radio is best for wifi or what radio is best for 4g or what radio is best a custom ROM.
Click to expand...
Click to collapse
I believe the radio/modem/baseband firmware has no bearing on either WiFi or 4G.
i know the modem doesn't impact wifi (use the same modem for EH06 vs an EC05 rom and you'll see a difference in wifi signal strength) but i don't play with 4g enough to see if the modem affects anything. 4g is still too spotty in my area to use regularly..
use the same modem for EH06 vs an EC05 rom and you'll see a difference in wifi signal strength
Click to expand...
Click to collapse
So this is my problem. I never use 4G either but the wifi is a problem, especially when I'm using public networks.
Thanks for the info.
I am using SyndicateFrozen Rom 1.2 and I installed the EH06 modem and noticed a big difference over the EC05 modem.
Do you know where I can find this modem?
There is a bunch of them here
http://forum.xda-developers.com/showthread.php?t=1123103
Android development its stickied all the modems...and I think I heard that the modem has control over wifi/4g/bluetooth. I personlly dont think wifi tho
sent from my uncyanogen modded epic 4g. with the key skips.
mkasick said:
I believe the radio/modem/baseband firmware has no bearing on either WiFi or 4G.
Click to expand...
Click to collapse
Nope, none of the modems produce better 4G for me. Getting 8Mbps on EC05. I'm sticking with it until official GB.
Sent from my SPH-D700 using xda premium
I know for sure my wifi reception is worse on this new ROM (Frozen Syndicate). I'm going to flash the radio for ECO5 and see if that helps.
So the Frozen Syndicate ROM started throwing an error that interfering with my incoming and outgoing calls and voice mails. I've switched to StarskyROM Alpha v2 EH17 and so far I'm very pleased.
But I'm seeing that my wi-fi is not at full strength, even though I'm right next to the router. I know they say to try different modems and find the right one.
But I'm looking for a method. What should I try first? EH17 because that's in the name of the ROM? Or EC05 because that's in the Baseband version? Or should I go through the list and try them all? If so, how do I test them to see which one is most effective?
Thanks.

GSM - GNEX Signal Drop Solution - Working ROM,Radio,Kernel combos. POST HERE...

***EDIT*** I believe that I have found the solution to this issue (at least for me) by flashing the FuGuMod Kernel as advised to do by 2 users (jetrii and slyydrr) who advised me of this in the following thread here http://forum.xda-developers.com/showthread.php?t=1487056 on pages 7 and 8 respectively.
This fix may NOT work for you but I can say that it has worked for me. Please see post #33 (and onward) in this thread.
I have painstakingly been trying to find a solution to this issue and it SEEMS as if I have FINALLY found one so if I have helped you in any way then I ask that you please press the "Thanks" button and please visit the thread above and say thanks to jetrii and slyydrr as well. I also recommend that if this works for you that you go to the FuGuMod thread here http://forum.xda-developers.com/showthread.php?t=1438417 and pay tribute to nikademus for his kernel!!! I know I sure have... Also... Make SURE that you flash the correct kernel version for your ROM ie: 4.0.3 ROM = 4.0.3 Kernel, etc...
Thanks...
Hi everyone,
I have decided to start a fresh thread here as I have seen (and replied to) many threads regarding people with the GSM version of the GNEX (like I have) that are suffering from random signal loss of both data and GSM services for apparently NO REASON.
If you are also experiencing these issues I ask that you please post them here so that they are easy to follow and I also ask for anyone with ANY answsers to please post them here as well. Also... Please post what firmware you are running and any steps you have tried to fix this issue be them a failure or a success. I have done the following...
I am currently on the FoxHound v1.0 AOSP 4.0.3 firmware and experience these random signal drops. I have flashed NUMEROUS radios / modems to try and fix this with no success. I had been told by someone that the issue MAY be a BUG in the 4.0.3 AOSP ROMS but I have a hard time believing this as some people do NOT experience these same issues while on 4.0.3 ROMS.
What did work was to flash to the Android Revolution 4.0.2 ROM and on this I do NOT experience these random drops which COULD mean that the problem DOES lie in the AOSP builds of 4.0.3 but again... I have a difficult time believing this but it could be true. Also... Stock firmware (4.0.1) for me here in Canada does not experience these random signal losses either.
This is very annoying as I want to run the 4.0.3 custom ROMS for their customization capabilities, etc but I cannot keep my device in a USABLE state when on 4.0.3 so I have to go back to my trusty SGSII.
Again, please post here to voice your concerns and opinions on this and perhaps SOMEONE will be able to find us a solution.
Thanks,
are you using your carrier supplied radio?
s2d4 said:
are you using your carrier supplied radio?
Click to expand...
Click to collapse
Yup. Im on UGKL1 which is the radio that shipped on my device. I have also tried other radios (XXKL1, UGKK7, XXKG6, etc) as I mentioned as well and I still experience the same issue and others have mentioned the same things as well with no successes.
There was this one time that I had lost signal randomly (while on stock unmodified out of the box ICS) but I was able to get it back with a factory reset. After that it never happened to me again.
jonnyg1097 said:
There was this one time that I had lost signal randomly (while on stock unmodified out of the box ICS) but I was able to get it back with a factory reset. After that it never happened to me again.
Click to expand...
Click to collapse
Thanks for the comment. May I ask what Radio your device has on it? Are you running any sort of custom ROM now? If so, what are you running?
Right now the radio is KK6 (im on stock yakju 4.0.2 now) but at the time it was what came with the phone (shipped from Rogers)
jonnyg1097 said:
Right now the radio is KK6 (im on stock yakju 4.0.2 now) but at the time it was what came with the phone (shipped from Rogers)
Click to expand...
Click to collapse
Hmmmm... Interesting... You got an OTA update to 4.0.2? I have seen other posts that people here in Canada are complaining that they have not received ANY OTA updates at all... When did you get this?
Since I have been on a custom ROM I have not seen this update obviously...
I'm on GSM with Rogers as well. I haven't noticed any significant signal drops with the exception of my basement (no cell phones get signal there - its a fortress lol). I am on 4.0.3 as well. I have read that the 4.0.4 has improved radio... so it may be worth looking into. I saw a WIP 4.0.4 GSM Rom here.
I've been experiencing this as well. I'll have a great signal, then suddenly it totally disappears, and after a few seconds the signal comes back. It's even happened during voice calls as well. I experienced this on the stock device (4.0.1). I'm now using the GummyNex rom on 4.0.3 (w/ a stock radio), and I'm still experiencing these random signal loses. (T-mobile USA in NYC, btw).
It's not a constant problem, but it happens a few times a day. enough to be an mild annoyance.
grantith said:
I've been experiencing this as well. I'll have a great signal, then suddenly it totally disappears, and after a few seconds the signal comes back. It's even happened during voice calls as well. I experienced this on the stock device (4.0.1). I'm now using the GummyNex rom on 4.0.3 (w/ a stock radio), and I'm still experiencing these random signal loses. (T-mobile USA in NYC, btw).
It's not a constant problem, but it happens a few times a day. enough to be an mild annoyance.
Click to expand...
Click to collapse
Hmmmmm... I ONLY seem to get these signal drops on 4.0.3... Weird... You have a GSM device right? Not CDMA - LTE?
I found something new to try when I get home but if anyone may want to try it now and post your results it would be very helpful and appreciated.
This is a radio from the Japanese variant of the GNEX and most people who have tried it have had good success with it... See the link below...
http://forum.xda-developers.com/showthread.php?t=1478685
I THINK I am experiencing this. My phone keeps going from H+ to 3G non stop at the top. How can you tell if your signal is being dropped? (sorry new to this) I've seen posts with a network screen? showing connection but I can't seem to find this.
Haven't had any issues as far as that. There were times when I was using the browser and it said network error but everything still worked.
Sent from my Galaxy Nexus using XDA Premium App
mattymac said:
I THINK I am experiencing this. My phone keeps going from H+ to 3G non stop at the top. How can you tell if your signal is being dropped? (sorry new to this) I've seen posts with a network screen? showing connection but I can't seem to find this.
Click to expand...
Click to collapse
You will notice because the signal bars icon will go "completely blank" and for example... If you are on your lockscreen and you can see the name of your provider...It will disappear completely for a couple of seconds and then come back...
No I guess I am not experiencing this. I'm not exactly sure what the difference between H+ and 3G is but my phone seems to stay in 3G until it transfers data, when its transferring data, it goes into H+, then back into 3G. Maybe this is normal. I was just curious because I did flash Yakju and the radios when i bought it.
mattymac said:
No I guess I am not experiencing this. I'm not exactly sure what the difference between H+ and 3G is but my phone seems to stay in 3G until it transfers data, when its transferring data, it goes into H+, then back into 3G. Maybe this is normal. I was just curious because I did flash Yakju and the radios when i bought it.
Click to expand...
Click to collapse
Yes... That is normal...
yiannisthegreek said:
Hmmmm... Interesting... You got an OTA update to 4.0.2? I have seen other posts that people here in Canada are complaining that they have not received ANY OTA updates at all... When did you get this?
Since I have been on a custom ROM I have not seen this update obviously...
Click to expand...
Click to collapse
Well, when I first flashed 4.0.1 yakju I got notifications of being able to upgrade it OTA. However, at the time I must of messed something up when I flashed it because the updates werent successful when I went to update it. So I got fed up with it and I flashed 4.0.2 manually via fastboot.
yiannisthegreek said:
I found something new to try when I get home but if anyone may want to try it now and post your results it would be very helpful and appreciated.
This is a radio from the Japanese variant of the GNEX and most people who have tried it have had good success with it... See the link below...
http://forum.xda-developers.com/showthread.php?t=1478685
Click to expand...
Click to collapse
So I flashed this radio and I get SOMEWHAT better stability but it only accesses the EDGE network and NO 3G/H... Guess this is a no go too...
HD Rom, Latest build.
Radio - XXKK6
Had the stock radio with the HD Rom, and thought that my random lost connections on market were due to my not flashing the recommended radio. Flashed the recommended radio (current), and still experienced them. Signal is better, and oddly enough voice doesn't get lost. Phone doesn't show that there is no signal, in fact it is at 3 bars on H.
Edit: I use a regional carrier, that doesn't list APN settings. By leaving APN type blank, I seemed to have solved the problem. Also dramatically increased the signal strength (Using Network Signal app).
finch8423 said:
HD Rom, Latest build.
Radio - XXKK6
Had the stock radio with the HD Rom, and thought that my random lost connections on market were due to my not flashing the recommended radio. Flashed the recommended radio (current), and still experienced them. Signal is better, and oddly enough voice doesn't get lost. Phone doesn't show that there is no signal, in fact it is at 3 bars on H.
Edit: I use a regional carrier, that doesn't list APN settings. By leaving APN type blank, I seemed to have solved the problem. Also dramatically increased the signal strength (Using Network Signal app).
Click to expand...
Click to collapse
What is the name of this network signal app? Developers name and what does it do exactly?

ICS based roms and wifi issues

Has anyone else had constant wifi issues with ics based roms? For example my range seems like it jas dropped dramtically. And if I leave my wifi on and set my phone down even for a small length of time amd pick it back up to browse the web or perform any internet based actiony device just hangs for a while. Its almost like it might be a wifi wake issue. Its really anoying and most times i have to switch between 3g and wifi just to get an internet connection back. I have seen this on all ics flavors i have ran so far. I am currently running a fresh install of ff18 i wanted to have that as my base to try and deduce what the issue could be....
Sent from my SPH-D710 using XDA
FWIW I have noticed similar with FF18 - didn't have these issues with FF02, the prior build that I had on this phone. I don't get the wi-fi sleep that people mention but I do see the signal drop and the occasional delays in apps. Also did a full flash but copied previous wpa_supplicant.conf due to need for custom file.
garwynn said:
FWIW I have noticed similar with FF18 - didn't have these issues with FF02, the prior build that I had on this phone. I don't get the wi-fi sleep that people mention but I do see the signal drop and the occasional delays in apps. Also did a full flash but copied previous wpa_supplicant.conf due to need for custom file.
Click to expand...
Click to collapse
Did this solve any of your issues?
Sent from my SPH-D710 using XDA
cas8180 said:
Did this solve any of your issues?
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
Like you they didn't appear until I flashed FF18. I'm considering flashing the FF02 modem to see if this corrects - I'll let you know what happens.
(Odd since there shouldn't be any changes in this process since FE26...)
Yeah try a different modem. The FF modems seem to have issues but FD26 works good for me all around
someguyatx said:
Yeah try a different modem. The FF modems seem to have issues but FD26 works good for me all around
Click to expand...
Click to collapse
Flashed FD26 modem everything else is still FF18 right away I noticed better wifi performance but it is still a little early to tell. But apps dont seem to lag anymore while attempting to connect to the internet. And wifi seems to find the routers right away and connect almost instantly. Also while going almost out of wifi range I am still getting a signal and able to surf the internet. Before if I was almost out of range I couldnt do anything and had to drop my wifi connection and switch to 3g. So these are the things I have noticed so far but I will continue testing and report back.
On a side note I had an office space sound board installed it was 20 or so MB and after flashing the model it was uninstalled and everytime I try and reinstall it I get an error that says "Can not install onto sd card" I thought this was really crazy and should be completely unrelated. Yet now I cant reinstall this app. So I am wondering if there is some kind of bug in FD26 though could possibly inhibit certain apps from being written to the sd card?

Cyanogenmod 10.1

I am on CyanogenMod nightly and am loving the ROM except for the flickering. It was said to disable hardware overlays to fix it. As dumb as it nay sound idk how to do that and moreover don't know what else that will effect. Can someone enlighten me?
Sent from my SAMSUNG-SGH-I747 using xda premium
gmac1990 said:
I am on CyanogenMod nightly and am loving the ROM except for the flickering. It was said to disable hardware overlays to fix it. As dumb as it nay sound idk how to do that and moreover don't know what else that will effect. Can someone enlighten me?
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
Go to about phone, click build number a couple times until it says you're now a developer, then go to developer options and disable it there. And it won't affect anything.
CM 10.1 and AOKP Reception Issues (dBm & asu)
I have tried to find information concerning this issue for sometime now, but can't seem to find any information concerning it. There may very well be, but not in a form that I recognize it as the solution or as the source of my issue...
Any time I install a CM 10.1 based rom or AOKP rom onto my GS III I747 (AT&T) they run very smooth for the most part. My only concern is that the signal fluctuates a great deal from nearly a full signal to nothing sometimes. When I go to Settings>about device>status I see a crazy dBm and asu. The dBm is around "2456543" and the asu is always "255." Before and when I return to the stock rom, the signal strength is fine and registers correct numbers. Is this a known issue, or something I am doing wrong and can correct?
Just to get a few questions out of the way, these are the steps I took to install these roms:
1 Used latest cwm;
2 formatted cache;
3 dalvik wipe
4 reset and factory wipe;
5 format system;
6 flash rom from sd card;
7 flash gapps;
8 reboot
I have even tried wiping dalvik and cache again after installing gapps, but I still get the same thing.
jpoejr said:
I have tried to find information concerning this issue for sometime now, but can't seem to find any information concerning it. There may very well be, but not in a form that I recognize it as the solution or as the source of my issue...
Any time I install a CM 10.1 based rom or AOKP rom onto my GS III I747 (AT&T) they run very smooth for the most part. My only concern is that the signal fluctuates a great deal from nearly a full signal to nothing sometimes. When I go to Settings>about device>status I see a crazy dBm and asu. The dBm is around "2456543" and the asu is always "255." Before and when I return to the stock rom, the signal strength is fine and registers correct numbers. Is this a known issue, or something I am doing wrong and can correct?
Just to get a few questions out of the way, these are the steps I took to install these roms:
1 Used latest cwm;
2 formatted cache;
3 dalvik wipe
4 reset and factory wipe;
5 format system;
6 flash rom from sd card;
7 flash gapps;
8 reboot
I have even tried wiping dalvik and cache again after installing gapps, but I still get the same thing.
Click to expand...
Click to collapse
Swap your modem. I think LK3 is the one for AT&T but you can try some others too. Just look for the modem thread in the Dev section.
BWolf56 said:
Swap your modem. I think LK3 is the one for AT&T but you can try some others too. Just look for the modem thread in the Dev section.
Click to expand...
Click to collapse
Awesome and thanks. I found the thread that you referenced... Is it just trial and error from here or is there a way to determine which modem a custom rom was build for?
jpoejr said:
Awesome and thanks. I found the thread that you referenced... Is it just trial and error from here or is there a way to determine which modem a custom rom was build for?
Click to expand...
Click to collapse
Pretty much. It's quite hard to suggest modems as they act different on every phone and in every area.
BWolf56 said:
Pretty much. It's quite hard to suggest modems as they act different on every phone and in every area.
Click to expand...
Click to collapse
I tried every modem out there and still the same issue with "23542568 dbm 255 asu" and the signal randomly drops in and out. There has to be a known cause or something I can do, huh? This is such a shame because I found the perfect cm 10.1 based rom that I want to use but I can't. There has to be a solution... Can anyone help?
jpoejr said:
I tried every modem out there and still the same issue with "23542568 dbm 255 asu" and the signal randomly drops in and out. There has to be a known cause or something I can do, huh? This is such a shame because I found the perfect cm 10.1 based rom that I want to use but I can't. There has to be a solution... Can anyone help?
Click to expand...
Click to collapse
I have the same issues on my AT&T S3 when I flash CM10.1 based roms. I can be 5 feet from my wifi router and only have 3/4 signal. On TouchWiz roms, I have a full signal. When I'm 15-20 feet away from the router I have 3/4 signal strength on TW roms, and 1/2 signal on CM roms. The same issue goes for my cell signal. I don't have a very strong cell signal to begin with (typically 2 sometimes 3 bars on TW roms) and it's usually at least 1 bar less on CM roms than TW roms. My bedroom is just about the farthest point in my house from the router so having a weak signal (wifi or data connection) kills my battery life overnight (at least 10%-12%) on CM roms. This happens when connected to wifi OR data and it happens on every CM rom I've flashed.
Instead of flashing a different modem, should we try flashing a different kernel?? Any other suggestions? Or is this a know performance issue in the difference between CM and TW roms?
The flickering is quite likely an issue with auto brightness. I think it's an issue even on the nexus devices. Set it at a usable level and you should be okay.
Sent from my SAMSUNG-SGH-I747 using xda premium

[Q] Sprint GS3 Signal Reception

So this is my first flash to a different ROM on my GS3. I have been rooted for a while and decided I wanted to try a different rom on 4.2.2 coming from 4.1.2 with touchwiz. I am using the Dirty Unicorns 4.2.2 ROM and I noticed my signal reception is spotty at best. I am talking data and voice together. I flashed back to my 4.1.2 touchwiz stock rom and the reception went back to normal. I did some research on this issue and started looking into APNs. I noticed the file on the Dirty Unicorns rom is full of VZW, CREDO, Sprint... but the stock Sprint ROM only has Sprint stuff. The differences in the 2 files, only looking at the Sprint settings is slightly different still.
Is this my issue? If so should I use the stock APN file?
I am using the stock MD4 baseband and my PRL is 25015. Any thoughts or troubleshooting steps are appreciated.
I did some deeper research to find that the signal reception seems to be reporting incorrectly in the Dirty Unicorns ROM. I downloaded an app from the play store called network info II. This reported my cell reception to be the same it was on the stock MD4 touchwiz rom. I also think that the signal bar is reporting the faulty reception listed in the about section of settings. I made a few phone calls and ran Pandora on the cell network with no abnormal loss of quality.
Try a app in play store
Signal Check Lite
Gives a lot of info and signal strength for data too
I like that app better than the other one I was using... Thanks for the tip!
GSXeclipsePSI said:
Try a app in play store
Signal Check Lite
Gives a lot of info and signal strength for data too
Click to expand...
Click to collapse
Back to my issue, it looks as if the phone is reporting correct numbers in the signal information fields. What it looks like it is showing is the data connection it is using. I also, sometimes, find my phone on LTE even when I connected to wireless seems interesting. I am not sure however about the signal bars at the top of the phone. Rarely ever do I see them rise above 2 bars. Maybe somebody from an AOSP rom or CM rom could chime in with an answer.. even a DEV!!
FYI: Would have posted this in the development forum but I didn't have enough posts at the time. I am also sharing my info just in case it isn't around or it helps someone else.
[SOLVED] Same problems over here
edit 10/10/13 [SOLVED]: I found this thread about Team Sonic Modem Flasher Tool. There are five available radios in the super easy package. 1-4 came up with error messages, "No SIM card," or no signal with an Unknown Baseband in the phone settings. The fifth one, "LI3" radio solved my problems.
The Flasher Tool doesn't have a means of backing up your current radio. Seems like as soon as you start installing these other radios, your original one (mine was an MB1) was gone. BTW, my phone Baseband was a long string of letters and numbers. The type of radio that you've got is the last three characters.
I was also experiencing problems with other ROMs than the stock rom on my Sprint Galaxy S3. I was running Cyanogenmod 10 release candidate, and it seems to me that the signal was way worse than with the stock rom. I would also be in downtown Seattle, certainly with LTE service, and still I was stuck at 3G. 4G/LTE seems to be a thing of the past with the newer ROMs that I've been enjoying.
At the moment I'm back to a stock ROM, CleanBean v4.2 with Android 4.1.2. It seems to be happier. But I won't be back to an area with normal cell service for quite some time.
An interesting idea that the ROMs were reporting the incorrect signal strength. But reporting 3G vs 4G incorrectly too? That seems like something else was wrong.
I was thinking perhaps it was the radio or something, but CM doesn't really mention anything about flashing specific radios.
Are you judging from actual numbers or the signal bar? The latter is notoriously inaccurate many times (and can vary depending on what rom you're using
As for not jumping on 4g when I should have been, that was my oops. I had the settings in the phone to only do CDMA/3G rather than LTE/CDMA/3G. I would flash the radio to the newest version and leave it at that. I heard from someone else in another thread that the radios don't get changed.
dkerlee said:
I was also experiencing problems with other ROMs than the stock rom on my Sprint Galaxy S3. I was running Cyanogenmod 10 release candidate, and it seems to me that the signal was way worse than with the stock rom. I would also be in downtown Seattle, certainly with LTE service, and still I was stuck at 3G. 4G/LTE seems to be a thing of the past with the newer ROMs that I've been enjoying.
At the moment I'm back to a stock ROM, CleanBean v4.2 with Android 4.1.2. It seems to be happier. But I won't be back to an area with normal cell service for quite some time.
An interesting idea that the ROMs were reporting the incorrect signal strength. But reporting 3G vs 4G incorrectly too? That seems like something else was wrong.
I was thinking perhaps it was the radio or something, but CM doesn't really mention anything about flashing specific radios.
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As for the feeling that the signal was reported incorrectly, I learned this. Dirty Unicorns, probably most other modded ROMs as well, are reporting the TRUE data signal strength in the signal bars. I downloaded Signal Check Lite. I compared the signal reported in the ROM to what this program says and they are identical. The bars are reporting the connected network types signal strength (ie. LTE,3G). It also says to be showing the RSSP which has been widely skeptical in most threads. If you're worried about your signal, check that program before switching away from a ROM or going back to stock. I actually kind of like them displaying the good info rather than just voice signal.
Does the kernel being used have any affect on signal reception? I'm just curious because I've switched between a few different 4.3 ROMs and the quality of signal is different between them.
When I was running Slim Bean 4.3, receiving a data signal at work wasnt a big issue. This morning I flashed Liquid Smooth 4.3 and even though the numbers being reported for signal strength are very similar, data on Liquid Smooth is almost unusable. Let me reiterate; Same phone (latest PRL), same location, same radio (MD4), same signal data numbers, using 2 different 4.3 ROMs and getting 2 extremely different usability results.
I'm not blaming either ROM, so I dont want to post in said threads, but is there a reason why this would be happening?
You are using data on the cell network and not the wifi network correct? There is a slight chance that it could but it would be mostly dependent on your modems I think. I am sure the modems and the kernel interact but that is about it. Testing for my issues, I am flashing the stock kernel back in, after doing a nandroid of course.
Disclaimer: I could be speaking rubbish. If I am please feel free to correct me, as I am still trying to learn.
uodii said:
Does the kernel being used have any affect on signal reception? I'm just curious because I've switched between a few different 4.3 ROMs and the quality of signal is different between them.
When I was running Slim Bean 4.3, receiving a data signal at work wasnt a big issue. This morning I flashed Liquid Smooth 4.3 and even though the numbers being reported for signal strength are very similar, data on Liquid Smooth is almost unusable. Let me reiterate; Same phone (latest PRL), same location, same radio (MD4), same signal data numbers, using 2 different 4.3 ROMs and getting 2 extremely different usability results.
I'm not blaming either ROM, so I dont want to post in said threads, but is there a reason why this would be happening?
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Custom ROM and stock kernel don't seem to work, at least with me. Recovering from nandroid right now.
Skeeredfitless said:
Custom ROM and stock kernel don't seem to work, at least with me. Recovering from nandroid right now.
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On custom ROMs you run, I think its best to run the kernel that the developer incorporated into the ROM for awhile. Then if you are sure your picking the correct kernel, you can try it out, but not before a nandroid of course. A touchwiz kernel is not going to function correctly on a AOSP ROM. Can cause alot of problems, TW & AOSP kernels are 2 totally different animals.
My battery life is sucking. I am trying to improve it so I thought I might try the stock one.
joeyhdownsouth said:
On custom ROMs you run, I think its best to run the kernel that the developer incorporated into the ROM for awhile. A touchwiz kernel is not going to function correctly on a AOSP ROM. Can cause alot of problems, TW & AOSP kernels are 2 totally different animals.
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Skeeredfitless said:
My battery life is sucking. I am trying to improve it so I thought I might try the stock one.
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Too many factors to list can cause this, try a different ROM with a clean wipe. Never use a TW kernel on a AOSP ROM.

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