[Q] 3g not working - EVO 4G Q&A, Help & Troubleshooting

I'm running cm7 nightly v28. For some reason the 3g does no work. The only way I can access data is to pick up some 4g. Is this a common problem? Fix?

Reflash the rom. I haven't had the issue but that could work.
Sent from my PC36100 using XDA App

Reflash the rom, and if its not in your power widget, check mobile data under wifi settings.

Sometimes mine do go right away so I turn it off and on quickly and that seems to do the trick.
Sent from my PC36100 using XDA App

Thanks for the responses. I tried reflashing but that didn't work. The turned mobile data on and off but got nothing. I even tried going in airplane mode and then out and nada. I think I might try flashing a different rom to get it working. Could it also be my PRL?

Its shouldn't affect it, but being on the latest PRL never hurts.

Make sure that its on in wireless networks...
This is my EVO, there are many like it, but this one is mine....

Mobile network is stuck on turning on -__-

Well try to reboot it real quick. And sometimes it can take it a minute or two to actually turn on.

I've rebooted several times. I've done full wipes and even to different roms. It just won't budge. :-/

I was having issues with 3G connectivity earlier. Getting lots of code 67's and data call notices. 4G was working fine so I switched on and used that. 3G is fine and back to normal now.

ZachPA said:
I was having issues with 3G connectivity earlier. Getting lots of code 67's and data call notices. 4G was working fine so I switched on and used that. 3G is fine and back to normal now.
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Did anyone come up with a concrete answer on this issue? I too have this problem and tried all the suggestions except 4g... it's not available in my area. Any help would be much appreciated, thanks.

Try flashing a sense rom and updating your profile and prl
Sent from my PC36100 using XDA App

Related

4G losing connection and not reconnecting

Is anyone else having this? I still have 3g connected, but if I look at the phone periodically, the 4g has an X on it (red x, im on honeyglow) it will reconnect if I toggle it, but if it drops it will not reconnect, like from 3g or wifi.
Is this s known issue and is there a fix?
Oh, and Im on the LosTKernal OC to 1.6 (stable) and Starburst 1.6, it did it on 1.7 as well.
Thanks
Which kernels have you previously tried? I tried one that made my 4g stop connecting even after switching back to stock but I did find a fix so give me some details on what you've tried so far....
Sent from my SPH-D710 using xda premium
I think I have only used ZedoMax, and then this LosT Kernel, or versions of it.
I had midnight ROM, now have been running Starburst. I think another configuration I had dropped signal on data a lot and had trouble switching between WIFI 3g and 4g. But this has helped my LOS issues as best I can tell.
If I can get 4g to work (im in Dallas, lots of 4g) great, if not Ill just try to ignore it.
If you have a fix, that would be great.
Thanks!
Honestly, if I had a choice between this and the screen wake lag, I'd not worry about 4g.
The screen wake lag is rediculous, it takes 3 full seconds to wake up with my class 10 8g card in it.
Well, what I did was Odined Crawrj's odexed with root and Busybox. You would want the deodexed version obviously. Run that in PDA slot. It will keep your data but then you will have to Odin back akernel with CWM like LoSt. It fixed all of the 4g and Wifi not connecting crap I had going on from something I triedthat had borked changes
Sent from my Nexus S 4G using xda premium
Thanks JC, what were your symptoms?
bdf said:
Thanks JC, what were your symptoms?
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The yellow kept going like it was searching but would never connect then it would finally go gray and 3g kicked in
Sent from my Nexus S 4G using xda premium

No internet connection?

So I just got my Sprint GS2 on Wednesday. Rooted it and flashed a ROM (Blazer) immediately (not too worried about LOS really). Everything worked awesome. 3G/4G great, Hotspot hack working fine, no problems. Today I wake up, go to class, and realize I have no 3G coverage. Weird, my brother on Sprint had coverage fine there. No 3G or 4G coverage on the way home, or at my house where both are strong. Turn on WiFi, hangs at obtaining IP. Same at work etc. tonight.
Anyone have any similar problems? I've rebooted, shut down for 5+ minutes, etc multiple times. Any suggestions on where to go from here?
Edit: Finally connected with WiFi by setting static IP address, reading more into it 3G seems like roaming issues, may try a custom PRL, 4G ??? there's pretty good 4G coverage in my suburban area and all the sudden I get it nowhere.
just a shot in the dark same thing happened to me.. only fix i found was to flash the rom agsin with out doing a wipe. its my story to the t. same rom same issues same everthing. hope that helps u out, got me fixed up
Sent from my SPH-D710 using xda premium
I was just thinking I'd try that. I'm gonna go ahead and do a full wipe too, just to be on the safe side.
you don't need to at max just wipe cache and davik so you can save your data and still be back up and running
Sent from my SPH-D710 using xda premium
After install the rom, do a profile, PRO update, had the same issue, same rom, worked great
IPhone killer
jhgti said:
After install the rom, do a profile, PRO update, had the same issue, same rom, worked great
IPhone killer
Click to expand...
Click to collapse
Not sure I'm following you.. Do a profile? Profile where, for what? PRO update what?
Anyway, same damn issue today. This is getting really old, really fast. Almost wish I would have just got a Nexus S if I'm going to be having radio problems galore on a phone that can't roam for crap. Time to go reflash my ROM, again...

Wifi not working after phone has been idle for a while

This started happening to me couple days ago. My phone is connected to wifi at home, and whenever I want to use my phone after its been in idle, everything looks normal. The wifi signal is there, but there is no data, I cannot check email, browse internet, anything with data. Only way to fix it is to reboot or turn wifi off and then back on. Everything is fine when I'm on 3g, there are none of these issues. I am on Calk 2.7 (not 2.8) with the latest kernal, EL28 (I think thats the latest).
If I have an app running in the back that is constantly using data (google music) (recall, ONLY on wifi, NOT 3G), the app stops working whenever the phone goes into idle, I guess. Basically leaving a data consuming app ruining in the background did not help the issue.
I have tried searching, and some other people have experienced the issue on different devices (NOT epic touch), but no threads offer any solution(s).
Any help would be greatly appreciated.
Sent from my SPH-D710 using xda premium
I had this issue on my previous epic touch and I took it back and exchanged for another one and the one I have now doesn't do it. It had the same problem u describe. Might want to check your router first though since it just started. Mine always did it and it did it on other Wifi networks. Good luck.
Sent from my Nexus S 4G using xda premium
I've seen this happen on four different E4GTs. It seems random and only occasional. I've seen it on EG30 and EK02 stock, I haven't tried other "modems" or roms yet. I'm not sure what causes it, but a quick wifi toggle seems to fix it. Seems like the wifi radio just sort of "freezes. " Wifi sleep policy set to never, doesn't seem to make a difference. Minor annoyance.
Sent from my SPH-D710 using XDA App
What baseband are your running? Have you tired another baseband?
I didn't think the modem has anything to do with wifi. I have this issue on certain wifi networks I use. I have made tweaks to see if it is security settings or what but haven't figured out a pattern yet. I use a wifi widget and it looks like DHCP hangs up cuz it won't give it an IP. I reboot the wifi router and it works right after evertime. I will sometimes powercycle wifi on the phone and it will work. I really think it is a wifi router setting for the network but not sure which yet.

[Q] Problems with Mobile internet

I am facing a very peculiar issue that makes my mobile internet dysfunctional. Whenever I switch from 2G/3G to WiFi and then switch back to 2G/3G from WiFi, the internet refuses to work unless I restart my phone. Once, the phone is restarted, it works like a charm again till the time I switch to WiFi again. Sometimes though, 2G/3G would not work even if I do not switch to WiFi. Also, rarely, it still may work even as I switch back from WiFi to 2G/3G. This issue has plagued me since a long time and is sometimes accompanied by call drops.
I took my phone to a Samsung Service centre but it wasn't of any use. They do nothing except reflashing the stock rom. It did fix the problem for a while but in an hour or in a day(or in some random time duration) the problem resurfaced. I took my phone to the service centre, just to get this problem fixed. I have tried switching between different modes in settings: GSM/WCDMA/auto etc
I also tried contacting my mobile carrier and got my sim card changed. Therefore, the mobile carrier is not at fault (Internet works flawlessly after I restart, remember?). How do I fix this? It is really irritating to restart the phone every time I need to use the internet. Please help! :-/
Maybe try flashing a different modem. I had various data and call issues on my i9300. After flashing 10 or so different modems I found one from aveuropean carrier worked best. Im in the uk btw
Sent from my GT-N7105 using xda app-developers app
Thanks for replying thedadio!
But I've never flashed a modem before and have no clue which one to choose. Is it same as flashing a custom rom? Also, can I brick my device while flashing modems?
Yes its similar to flashing custom ROM. What ROM are you on and what modem are you on?
McLaren__F1, I am on stock 4.1.2. Also, I just tried flashing DDALJ1 modem (As I'm from India) and Perseus kernel. None of these steps helped me in any way. Still the same issues. :-/
Which is your network provider? I had the similar problems when I was on docomo..nw ported to airtel nd problem solved.
Btw did you try some other np's sim?
Sent from my GT-N7100 using xda premium
I am currently using Airtel (Prepaid). I haven't tried using any other np's sim though..
I have the exact same problem. I am with optus Australia. I tried different modems, different ROMs but all have the same problem. I have sent mine away to be replaced and am still waiting for the new one. Very frustrating problem.
Sent from my Nexus 7 using Tapatalk HD
I'm not sure if they'll replace mine. It has been almost 6 months since I bought it..
How do I solve this? Any clue anyone? :|
My Note2 does this sometimes & only fix is a restart.
try soft format may its helpful
Not a fix, but toggling airplane mode on and off does the job for me.
Interestingly this happens to me only when leaving one particular WiFi access point.
Randomwalker said:
Not a fix, but toggling airplane mode on and off does the job for me.
Interestingly this happens to me only when leaving one particular WiFi access point.
Click to expand...
Click to collapse
i got exatly same proplem, 3g not working after leaving wifi of my workplace, but when im home i have no proplems if i decide leave my home network.
could it be related to radio type wifi has?? my workplace still using old hardware with radiotype of .g and leaving that network "kills" mobile network and i need to reboot phone, but my home network is .n and im not having proplems after leaving it. if its related to wifis radiotype it should be easy for someone to write script which reboot mobile network after leaving those wifi networks.
Not a fix, but toggling airplane mode on and off does the job for me.
Interestingly this happens to me only when leaving one particular WiFi access point.
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Doesn't work for me. This problem is strange. :-/
No one has a solution for this problem on XDA?
Did you use the NFC to scan anything by any chance? I don't know if it could be related but my phone started to have issues around the same time I bought some NFC tags and started programming and scanning them.
I still haven't got my replacement phone back yet. But I'll let you know if it still has issues in my problem spots. Than we'll know if the problem was with the phone or just this model.
Sent from my Nexus 7 using Tapatalk HD
essense said:
Did you use the NFC to scan anything by any chance? I don't know if it could be related but my phone started to have issues around the same time I bought some NFC tags and started programming and scanning them.
I still haven't got my replacement phone back yet. But I'll let you know if it still has issues in my problem spots. Than we'll know if the problem was with the phone or just this model.
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse
Nope! I haven't used NFC at all.
Ohh, okay..Eagerly waiting for your response! *Fingers crossed*
Tested replacement phone today and the problem seems to be gone. The signal was actually stronger than all my previous phones.
This issue could be a hardware problem as from what I have searched on the net it seams to affect only a few people. I just hope if I root the phone the problems don't come back.
Maybe you could try send it away for repair if they won't replace it.
Sent from my GT-N7105 using Tapatalk 2
Looks like I spoke too soon. The issues are still there. While waiting for my replacement phone I was using an old HTC wildfire and had no issues with the data connection so it must be an issue with this model.

T-Mo 3g connection Issues??

I have been having some connectivity issues and I was wondering if anyone else is experiencing the same thing. It will happen randomly during the day, where I will have full bars of 3g+ but yet when I try to use the browser or any other applications that uses the internet (instagram, FB, etc) nothing will load and eventually time out. Rebooting and turning off 3g/2g/mobile network and back on does nothing. Connectivity seems to come back whenever it feels like it. Ive talked to one of my other friend and she has also experience the same problems on her Note 2 and neither of us has reached the 5gb cap either. Are there any fixes for this?
Have you tried flashing a different ROM to see if that corrects the issue or going back to stock? maybe flashing a different modem my work
Sent from my SGH-T999 using xda app-developers app

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