Develop Bugs

No data on 4g

Lately when I turn on 4g it will connect and then go to sleep indicated by the "ZZZ" but if I try to use data i get no connection messages and the "ZZZ" doesn't go away indicating it is trying to connect. I turn it off and 3G works fine. Sometimes a reboot fixes it for a while. For some reason this morning after rebooting I got the message about updating the modem from EF02 to EF10 even though I am on the EC05 modem. Could it be a hardware problem with my 4G or does anyone have any other ideas?

Did you try adjusting the minimal 4G reception in the "Want better 4G" thread. It worked great for me.
Sent from my SPH-D700 using xda premium

Yes I did that when it was first posted and it has worked fine up until recently. I have 2 other Epics in my house both rinning SFR 1.2 also but I haven't done that mod yet to them. I was considering getting the original values off one of them and changing mine back to see if that helped.

I have noticed that some apps wake up 4G and some do not. For example, I would do a speed test, it wouldn't work, I load a web page, then try speed test, and it would work.
Also, try turning off then on 4G.

Gavisann said:
I have noticed that some apps wake up 4G and some do not. For example, I would do a speed test, it wouldn't work, I load a web page, then try speed test, and it would work.
Also, try turning off then on 4G.
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Yup, same here. I know Whosdaman said they are doing some improvements on the network towers. My 4G speeds have been better lately but there are times where its hard to connect
Sent from my SPH-D700 using xda premium

I figured there may be a problem waking 4G but even Browser, Google Maps and Market don't work when this happens. I would think if it was a tower issue I wouldn't show connected would I?

[Q] cant update profile

I live in an area with perfect 3g coverage yet im luck to get 3 solid bars of signal and download speeds never exceed 30kb/s. tried updating the PRL manually, no change. So then I tried to update profile but when I did i for an error no network connection message. I get this message regardless of whether im in wifi, 3g, or 4g. Is this a bug in the leaked ICS builds or is there something wrong with the phone?

regP said:
I live in an area with perfect 3g coverage yet im luck to get 3 solid bars of signal and download speeds never exceed 30kb/s. tried updating the PRL manually, no change. So then I tried to update profile but when I did i for an error no network connection message. I get this message regardless of whether im in wifi, 3g, or 4g. Is this a bug in the leaked ICS builds or is there something wrong with the phone?
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No issue here, what build are you on?

Darkstar 1.0.2 (FB27), Same issue on FB21 as well though.

regP said:
Darkstar 1.0.2 (FB27), Same issue on FB21 as well though.
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Try a different modem, I'd say kernel too but I'm assuming because we haven't gotten a repacked fb27 kernel yet your still on stock. I haven't had any issues with the FB leaks, occasionally I'd get an error message trying to update my profile and prl but i'd reboot, wait an hour then try again and it would update fine. I would try a different modem, since there isn't cwm yet for fb27 (unless your using fb21 kernel with a broken camera) you gonna have to flash a new modem through odin.

yeah im using fb21 kernel until pb27 gets repackaged. ill flash a diff model and report back.

regP said:
yeah im using fb21 kernel until pb27 gets repackaged. ill flash a diff model and report back.
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Ya try that first man, because the FB21 rev2 break the camera, so it could be related to that too

Flashed FB15 modem. No change in data speed and still getting the "Error: Connection Error" when trying to update profile.

regP said:
Flashed FB15 modem. No change in data speed and still getting the "Error: Connection Error" when trying to update profile.
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It's probably the kernel then man, flash the stock fb27 kernel through odin then try and post back

on it. brb

Stock fb27 kernel. same deal -_- maybe ill try reflashing but i remember having the same problem on fb21.

Strange stuff man. You've never had any errors on boot have you? Any failed flashes in Odin or accidently flashed a modem through the phone option in odin
Sent from my SPH-D710 using XDA

Nope, no boot errors. No accidental flashes. Maybe I'll odin back to EG30 and see if the problem persists.

Does your phone have a repaired esn? I never could update the profile or prl when I was running one. I always had to update the donor phone and then pull the info from it. Are you getting an error 67? What is your ping from speedtest? Usually 1X my pings will be 800-900 ms and 3G is under 300ms.
If your phone is legit, call Sprint tech support.
In my area, 3G is so bad the I hardly ever get over 100kbps and I have full bars.

Um, bought the phone legit from Best Buy. I called tech support this morning but they always got to the step where they tried to have me update profile which I cant do which is when I came here for help.
I'm in the process of Odining back to EG30. If its a problem there as well im going its going to make me think the phone is the problem and Im may look into getting a replacement. I want a white one anyway..

regP said:
Flashed FB15 modem. No change in data speed and still getting the "Error: Connection Error" when trying to update profile.
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Just in case it wasn't obvious, update profile only works on Sprint's network. It doesn't work while roaming or over 4g.

Yeah, I'm not roaming and 4g is turned off. Thanks though.

I suggest you ODIN back to EL29 using the Full ODIN package in my signature. Then let the hands free activation (HFA) automatically run and update your phone. I suggest EL29 rather than EG30 or EK02 because your phone will try and download the EK02 and/or EL29 OTA updates wasting bandwidth and making your phone slow while it does so.
If HFA doesn't work, try update profile by hand. If that doesn't work, try ##786# reset from the dialer. Enter your MSL when it asks for code. To get your MSL, type
Code:
getprop ril.MSL
from adb shell

Ok will do. I re-flashed the fb21 kernel so I could make a backup of my current ROM real quick. Ill odin to EL29 once its done. Thanks for the suggestion.

Ok, so I'm back on EL29 and was able to updated profile and prl but download speed on 3g still only topped 40kb/s with 120 ping and 4 bars. I'm in a strong Sprint 3g area so I'm beginning to think there is something wrong with the 3g radio on this particular unit.

regP said:
Ok, so I'm back on EL29 and was able to updated profile and prl but download speed on 3g still only topped 40kb/s with 120 ping and 4 bars. I'm in a strong Sprint 3g area so I'm beginning to think there is something wrong with the 3g radio on this particular unit.
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I doubt there is anything wrong with your radio with 120ms ping and 4bars.
It is more likely your tower is overloaded or you are connected using 1x instead of 3g. Stock Sprint software always displays 3G whether or not you are connected 3g. Although, with 120ms ping (1x would be slower ping), my thinking is you are connected 3g, just the tower is overloaded.

[Q] Poor signal on ICS roms, AOSP especially

Can anyone help with an issue I get using AOSP/ICS roms. On a GB rom I normally get 1-4 bars of signal in my house, 3G speed is fairly rubbish but it does work. Whenever I flash any version of CM9 or AOKP I get 0-2 bars of signal, and mostly no mobile data.
The phone can be sitting on a table and show 2 blue bars, often if I pick it up it will change to none and give me network errors. I can normally still send texts and make calls when it is like this, just no data and things like Play Store fail to connect.
Calk's ICS rom may be a little better, but not much (the signal meter on Calk's bounces between 1x and 3G along with low bars).
Switching back to a GB rom I get all my signal back and the slow but actually working 3G. I have tried several modems on both GB and ICS and they show no difference in behaviour (I have tried EL29, FD10, FD16)
Since I have wifi at home it's not a real issue for data, however it seems to kill the battery searching for a signal. The "Time without a signal" shows 20-30% most of the time on ICS, vs 0% on GB.
Any ideas on why ICS roms are giving me no signal?
Cheers,
Richard

I've been getting the same thing but the connection seems to be the same as when I was getting more bars on GB. This is especially true when I'm using Wi-Fi. I'll get one bar of signal strength but it is still fast and I'm nor having connection problems.

richard.tufty said:
Can anyone help with an issue I get using AOSP/ICS roms. On a GB rom I normally get 1-4 bars of signal in my house, 3G speed is fairly rubbish but it does work. Whenever I flash any version of CM9 or AOKP I get 0-2 bars of signal, and mostly no mobile data.
The phone can be sitting on a table and show 2 blue bars, often if I pick it up it will change to none and give me network errors. I can normally still send texts and make calls when it is like this, just no data and things like Play Store fail to connect.
Calk's ICS rom may be a little better, but not much (the signal meter on Calk's bounces between 1x and 3G along with low bars).
Switching back to a GB rom I get all my signal back and the slow but actually working 3G. I have tried several modems on both GB and ICS and they show no difference in behaviour (I have tried EL29, FD10, FD16)
Since I have wifi at home it's not a real issue for data, however it seems to kill the battery searching for a signal. The "Time without a signal" shows 20-30% most of the time on ICS, vs 0% on GB.
Any ideas on why ICS roms are giving me no signal?
Cheers,
Richard
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i'm having a similar problem, only difference is that mine on ICS was working fine untill i softbricked and restoring back to ICS using CFRoot.. now i (just like you) have 0-2 bars, and have tried dozens of modems and kernels to fix the problem..
eh, maybe i should go back to GB too - see if that fixes my problem

If you search around these forums you'll find something bout getting rid of proxies that the sprint server uses... some people have reported great success and increased service while others have had no noticeable difference, I myself haven't gotten around to trying it, bit I still plan to, sorry I'm mobile right now and can't find the post, I'll see bout linking it when I get home
sent from my SGS2 running AOKP, eh...

Here is the thread he's referring to I believe:
http://forum.xda-developers.com/showthread.php?t=1283229
I've done this on a couple phones and I've gotten good improvements each time. It will only affect your 3g speeds and not 4g, and it's not a guaranteed improvement.. there are many factors that can affect. Check your speeds before and after to see if it helps you or not! =)

GodspeedFx said:
Here is the thread he's referring to I believe:
http://forum.xda-developers.com/showthread.php?t=1283229
I've done this on a couple phones and I've gotten good improvements each time. It will only affect your 3g speeds and not 4g, and it's not a guaranteed improvement.. there are many factors that can affect. Check your speeds before and after to see if it helps you or not! =)
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Yessir thank you for the link
sent from my SGS2 running AOKP, eh...

Loss of 3g and 4g data (mobile network state disconnected)

I have been having some serious issues with data ever since rooting and flashing custom ROM on my Galaxy SII which is on Boost Mobile. When i first got the phone before i did anything to it, i was getting pretty good 4g and 3g speeds. After rooting i noticed that my 4g and 3g speeds had dropped significantly. I called boost they said there is some work being done in my area, which i think was crap. I was running baked ROM 4.2.1 JB and it ran nicely but i had no 4g connection by this point and had only 3g connection but VERY slow. I thought to restore my saved backup of rooted stock and maybe my speeds will come back. NOPE 4g still doesnt work at all and NOW 3g doesn't work either. I've checked APNS it seems to be correct, but my connection status is still "mobile network state disconnected" . Oh, also i've tried flashing different modems and kernel repacks cause i know using custom stuff can bork ur 4g.
Can someone help please?

mindstate said:
I have been having some serious issues with data ever since rooting and flashing custom ROM on my Galaxy SII which is on Boost Mobile. When i first got the phone before i did anything to it, i was getting pretty good 4g and 3g speeds. After rooting i noticed that my 4g and 3g speeds had dropped significantly. I called boost they said there is some work being done in my area, which i think was crap. I was running baked ROM 4.2.1 JB and it ran nicely but i had no 4g connection by this point and had only 3g connection but VERY slow. I thought to restore my saved backup of rooted stock and maybe my speeds will come back. NOPE 4g still doesnt work at all and NOW 3g doesn't work either. I've checked APNS it seems to be correct, but my connection status is still "mobile network state disconnected" . Oh, also i've tried flashing different modems and kernel repacks cause i know using custom stuff can bork ur 4g.
Can someone help please?
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What modem and ROM are you on right now?
Sent from my SPH-D710 using xda app-developers app

BluesRulez said:
What modem and ROM are you on right now?
Sent from my SPH-D710 using xda app-developers app
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Right now i am on Stock Rooted, Using modem FI27. Before i was using baked ROM as my daily driver on FL24 Modem, thats when i noticed 4g had gone completely. I am using AGATs kernel FI27 repack. Its strange though my baseband says Fi27 but build number says FL24 on the end. Should it be that way?
oh btw my 3G came back, it just took forever to connect. But my 4g still wont work, it connects to the network but it still says "mobile network state disconnected".

Different 4g problem

Ok so about a month ago I was using different 4.2 roms when I realized the 4g connection problem.. I have since gone back to stock tw but I cannot get my 4g to come back.. even when my connection is the ehrpd my 3g symbol will vanish and my browser will say no connection.. I have tried the following to no avail.
Totally back to stock unrooted stock recovery
Updated prl and profile. Nada
##72786# does activation still nothing
The only time I have any data is when im at evdo 3g. Which sucks. Im in a fair lte area and I would at least have the ehrpd connection, 4g while traveling around town but for a month I've just been stuck.
Also tried factory reset when I went back to stock.
Any ideas? Im about to call sprint and tell them what's going on but would love to just fix it myself.
Also my mobile network is cdma/lte
Ty in advance
Sent from my SPH-L900 using xda app-developers app