Hi, it's been a while since I posted on the forums. I've had a problem with this for a while now, but never bothered to ask you all. i don't get certain types of signal with the stock rom and aosp roms. For stock, I get 4g data, and I am able to make calls while roaming but not while I am on regular 1x (connects but I can't use it). Also, signal is iffy, sometimes it connects/randomly disconnects. For aosp, I get almost no signal, only roaming. I think that I didn't mess up my efs folder, my imei is still the same as the DEX on the back of my phone. Do you guys know what is wrong or how to fix this? I want to be able to use my phone again...
What modem are you on? Firmware or ROM? I'm using NE2 with rwilco's stock ROM and a GSM sph-l900 with t-mobile... I get 3G and 4G (hsdpa+)... before I use to get lte/3g/1x and I use roam control when I'm in an area where I know I don't have a good signal...
Related
So I've tried using some ROMs but I've never been able to find one that can handle switching from 4g to 3g. Only the stock ROM can do this without losing connection, otherwise I have to turn on airplane mode every time i move from 4g to 3g. Is there a ROM out there that can do this?
Um just about all roms can do this without issue. CM10 can as well as all touchwiz based roms. What rom have you tried so far?
HostileSausage said:
So I've tried using some ROMs but I've never been able to find one that can handle switching from 4g to 3g. Only the stock ROM can do this without losing connection, otherwise I have to turn on airplane mode every time i move from 4g to 3g. Is there a ROM out there that can do this?
Click to expand...
Click to collapse
This sounds like a signal outage kinda thing, maybe, is there official lte in your area? If not, id avoid using it. Even then its sketchy. So maybe, when you cycle netween the two, it detects the other signal and tries to connect and drops it? If airplane mode your signal will get better coming out.
Sent from a Soviet base in Indiana
I have a GS3 that I have rooted and flashed to several different roms . Right now I'm running CM10 - 4.1.2. I am getting a 3g link icon but no data. Its getting super frustrating cuz every time it drops from h+ I lose all data and there's many places I SHOULD have service. Can someone PLEASE help me! I can't talk to T-Mobile without putting my phone back stock, and even then, I only have a 1 in 5 chance of someone whos not a moron answering the phone ...
It switches to 3G to save data and battery life, and to H+ when needed. If that's not the case, update your modem/radio firmware. http://forum.xda-developers.com/showthread.php?t=1860592 for modem firmware.
Time to update your 6 month old rom. And as suggested - your modem, too.
hey gang i'm running the latest aokp task650 build on my S3 I747m. Everything works awesome, except i occasionally lose my data connection. I'll notice my connection status bars are gray, and typically a reboot will fix it. I'm sure going into airplane mode and back out from that would re-establish the connection too.
my APN is set correctly, i compared it to a friends nexus which is not rooted.
Right now i'm set as pda.bell.ca
I've flashed the latest bell modem file (that i'm aware of).
Anyone have any suggestions? i'm pretty new to all of this.. not sure what to do to troubleshoot.
itrunner said:
hey gang i'm running the latest aokp task650 build on my S3 I747m. Everything works awesome, except i occasionally lose my data connection. I'll notice my connection status bars are gray, and typically a reboot will fix it. I'm sure going into airplane mode and back out from that would re-establish the connection too.
my APN is set correctly, i compared it to a friends nexus which is not rooted.
Right now i'm set as pda.bell.ca
I've flashed the latest bell modem file (that i'm aware of).
Anyone have any suggestions? i'm pretty new to all of this.. not sure what to do to troubleshoot.
Click to expand...
Click to collapse
I've been having problems lately when I have poor 4G (LTE) signal. My phone would rather hang around on the LTE network with little to no signal before it switches over to 3G. It's been doing this for a while on the Rogers network for me. I can see when I check the battery stats just how much time is spent without signal which is a lot. At work I get full bars 3G when at my desk but very poor 4G. The only thing causing me to loose signal is the poor transition back and forth between the two networks. Changing modems has absolutely no affect on this matter and I've put the APN's and network modes through the ringer with no change either. I've tried it all and nothing improved it. When I walk outside I immediately hit full bars 4G. Just when I'm inside my work and at home, I get poor lingering 4G. I wish the thresholds for when it switches over were better. I usually just turn off LTE all together which sucks but oh well.
I don't think we are the only people with this either. I've read grumblings about others noticing the same thing.
If curious, I'm running the latest CM10.1 nightly with Ktoonsez kernel on the Rogers network in Ottawa.
Interesting, that could very well cooincide with what i'm seeing. I tend to bounce from 4G to H+ or 3G, i wonder if it's trying to hang onto 4G.
Is there a way to force it to stay on 3G? that might be a good test
I was getting the same issue.
I did a factory reset and reinstalled my ROM plus GAPPs and the issue resolved itself.
I am using the latest modern right now and not my bell one. I think it's from a south American carrier, but bit 100% sure of the top of my head. But it is in the current modern thread
Sent from my SGH-I747 using xda app-developers app
I have been in many many roms with my galaxy, from Touchwiz to cyanogenmode and liquidsmooth and many others, but one day, I recognize that my signal was really poor. I broke my screen and i replacement by my self i was really careful about didnt touching any other thing that was not part of the screen, but maybe, just maybe i scratch my antenna? There is anyway to check if my signal it's not good as before because of that? Also there are places where i have signal like my house and the speed is really fast, but there are also places where i have full signal and my speed is crap, and there are places were i lose my signal too frequently. I feel like my signal have been deplore slowly. Or it's just.. that sprint LTE is really bad?
first try updating your prl
next if youre on a MD4 TW rom, flash the md4 modem
also try updating your profile
if nothing works try one of the signal refresh apps from the play store
also it may be the rom
if none of the above helps its probably hardware related or it could just be that sprint is upgrading their towers and the one nearest to you is offline for the upgrade...
All AOSP based roms show's your true signal in the noti bar ( Data Bars )
TW JB has an extra signal so it looks like you have good signal but you don't.
Checking signal strength is in
About Phone > Status > Signal Strength.
Usually -75 to -99 is good to really good signal.
But if you think your actual signal is a little far-fetched. Download SpeedTestNET from
Google Play and look at your ups and downs.
My signal is around -80 dbm and my ups are 1 mb and my downs are 3-5 mbs ( It shucks :3 )
There are 3g / Wifi Speed Tweaks you can find around xda or google.
And if it has to come to it, if your on TW JB Rom, Turn off or Freeze your Sprint Connections Optimizer.
That auto connects to frequent used Networks, Wifi Terminals and towers that had the best connections for you before
and sometimes it'll connect to a good tower that's located really far ( I don't know why but I've experienced it... )
Use apps that recalibrate your Radio as well if it helps, A lot of people say it's not worth it, and sometimes it IS just a placebo
and it tricks ya but if it works it works.
Verizon PRL but only for talk.
Hey guys, I was wondering is there a way I can switch to Verizon's towers when I make a call, but only use Sprint's towers for data? didn't want to make a new thread about this in the Q&A since I can't actually post where the Sprint PRLs are yet, but I have horrible reception in my house. I roamed to Verizon's towers constantly when I switched PRLs a couple months ago and I got in trouble because I went over 300MB of data. Thank you all.
eisawi99 said:
first try updating your prl
next if youre on a MD4 TW rom, flash the md4 modem
also try updating your profile
if nothing works try one of the signal refresh apps from the play store
also it may be the rom
if none of the above helps its probably hardware related or it could just be that sprint is upgrading their towers and the one nearest to you is offline for the upgrade...
Click to expand...
Click to collapse
I am gonna try this.. but what it's profile? i really dont get it..
Ambkor said:
I am gonna try this.. but what it's profile? i really dont get it..
Click to expand...
Click to collapse
This. Menu > settings > System update
CNexus said:
This. Menu > settings > System update
Click to expand...
Click to collapse
it's there is anyway to do that on Cyanogenmode or an AOSP rom?
sadly no... but your signal might be because your on an aosp rom... they arent as stable as touchwiz roms...
There's a few unofficial ported AOSP roms that have the sprint update feature, I'm not to sure which ones but i've seen them.
They only updates profile, im not to sure about PRL. It's best to update on a TW based Rom because it's easier, it takes
awhile switching between the two just to update though.
On a stock TW JB Rom, on home screen press your menu button.
Select Settings or System Settings.
Scroll all the way down and select System Updates.
Select Update PRL.
Wait for it to be done.
Select Update Profile.
Wait for that to be done.
Reboot your phone.
Make sure your data is connected, if it's slow be patient let it take time to update Profile and PRL.
Noted that as long as your on the Rom based on what firmware it is. ICS or JB. It doesn't matter which
modem you choose, just as long as its based on one or the other.
For example. Being on an MD4 Rom you'll still be able to have 3g / 4GLTE Data with an LJ7 Modem, or
LI3 rom with an LF9 modem. Remember changing your modem YMMV, or Your Mileage May Vary, almost everyone
who switches modems that have the best stability for them they either have better data speeds. Or They're not
being dropped as often or not at all when near a tower.
For me, around my area, using an MD4 Rom, I'm using the LJ7 modem, because all the other modems I have tried either
dropped my data ( Not connected to towers even though there's one near me. ) Or I'd have to reboot my phone just to get it back.
and when im on an AOSP Rom, I'm usually using LF9, Because i've tested my data speeds on it and that's the highest out of all i've used
+ I don't get my data cut off or dropped.
@ eisawi99
Most AOSP Roms have 3G and WiFi tweaks to help with stability. But the downer part of using AOSP Roms is it doesn't get along with
trying to connect to 4G LTE, I have 4G LTE in my area, when using a TW rom it'll instantly connect when ever it's got a strong signal.
While on an AOSP Rom, It rarely ever does even if im almost sitting next to it.
Sometimes it's also the APN's that are being configured via script tweaks. I usually just remove all my old APN's and use all of sprint's
APNs when ever i can't send or recieve a text or mms, but it'll also help with data connection stability too.
Hello, I'm pretty new to the custom rom world.
I am currently using latest Spirit AOSP cm11/kitkat based rom with the stock kernel that comes with this.
Now If i use the ND8 stock rom, there is no problem whatsoever with the ability to connect to 4g LTE.
But for some reason, when I'm on custom ROM and my device turns off for a long time / I disable my radio (when connected to wifi)--I'm not sure which one causes the problem--the phone just loses ability to connect to LTE.
I use two apps:
LTE Discovery
advanced signal status
advanced signal status lets me see if my phone can find 4g lte signal/how strong it is. When the 4g LTE is working, i get signals in -(number)db, but when it doesn't it just says n/a for all the sections.
with LTE discovery I use it to see what type of connection i get-- LTE when 4glte is working, and eHRDP? or evdo rev. A for when I can't connect to lte.
my APN settings are correctly set-- my phone has data, voice, and text-- it's just the LTE connection that gets dropped for seemingly no reason.
My method of fixing this is wiping data/cache/delvik/system, install stock kk nd8, perform SCRTN, make sure data/phone/text is working
then I wipe data and cache, then restore my rom... that is working..
If I restore to a point when lte was not working, lte will not work..
but doing this everytime my phone can't lte is very tiring..
I don't even know where to start troubleshooting this issue i have..
I don't even know if anybody has the same issue.. or even heard of anything even close to this.. please help