4G issues-I have to reboot to turn on 4G - EVO 4G Q&A, Help & Troubleshooting

Hi all, sorry if this has been asked before but some of these threads are thousands of posts deep... I'm using the latest Myn Warm rom, with the stock kernel that's bundled with it (#17 I believe). When I try to turn on 4G, it turns on, scans, tries to connect to Sprint, then turns off and repeats that cycle over and over. It never actually establishes a connection. If I do a hot restart, then it kicks in. Similarly, turning off 4G requires a reboot as well (which I know is a known issue). Anyone else having this issue and is there a fix out there?
Thanks as always

Pontius Pilate said:
Hi all, sorry if this has been asked before but some of these threads are thousands of posts deep... I'm using the latest Myn Warm rom, with the stock kernel that's bundled with it (#17 I believe). When I try to turn on 4G, it turns on, scans, tries to connect to Sprint, then turns off and repeats that cycle over and over. It never actually establishes a connection. If I do a hot restart, then it kicks in. Similarly, turning off 4G requires a reboot as well (which I know is a known issue). Anyone else having this issue and is there a fix out there?
Thanks as always
Click to expand...
Click to collapse
Not sure I've seen anyone have the issue with trying to turn 4g on, but give this a shot if you haven't already, it was buried in that massive thread:
1. Menu-->Settings-->Wireless & Networks
2. Turn 4G OFF--> then ON--> and OFF again, waiting for radio to completely turn off and on each time.
3. Reboot and check your logs (download logger HERE)

Related

3G connection issue after having used WIFI

Hey people!
I tried searching the forums for this issue but couldn't find anything, so if this is already discussed please forgive me and redirect me.
Anyway, when I am using wifi the 3g connection disappears (which I've set it to) but sometimes, especially after a long while, when I turn the wifi off the 3G connection won't reappear. I tried turning 3G off and on again without success. The only thing that helps is a soft reset of the phone, which is really annoying.
Has anyone else had a similar problem like this?
I did see the other thread about the 3G connection stopping and hanging, but since they at least still had the 3G connection icon in the top bar I consider this to be a totally different issue.
Anyone knows what might cause this?
Thanks!
If you carefully search, this has been discussed many times.
Basically, HTC Desire is not that good on waking up the 3G connection after turned off.
When you use WiFi, the 3G will not be turned off, but it will not be used.
Yes, it happens to me several times ... usually I just "wait" ... 1 or 2 minutes.
Other user said by turning ON then OFF flight mode will help.
Yeah ... this issue is bad
Cheers man. Waiting won't help me since I've waited up to an hour just to see what happens. But I'll try the flight mode trick

Going from 4G connection to WIFI requires reboot

Good afternoon,
I read in another thread on here that there are a few that have experience this and one mentioned that there is a fix somewhere but I've searched and haven't been able to turn up anything.
Basically, after I connect to 4G, then go back home and want to connect back to WIFI, I have to reboot before WIFI will work. And vice versa. After connecting to WIFI, I have to reboot before 4G will work.
Any help would be greatly appreciated.
Tim
I have the same issue. That will be a real pita.
timdsmith72 said:
Good afternoon,
I read in another thread on here that there are a few that have experience this and one mentioned that there is a fix somewhere but I've searched and haven't been able to turn up anything.
Basically, after I connect to 4G, then go back home and want to connect back to WIFI, I have to reboot before WIFI will work. And vice versa. After connecting to WIFI, I have to reboot before 4G will work.
Any help would be greatly appreciated.
Tim
Click to expand...
Click to collapse
Have you tried turning the radios on and off? Perhaps turning them both off then back on? perhaps turning on airplane mode then turning it off?
midri said:
Have you tried turning the radios on and off? Perhaps turning them both off then back on? perhaps turning on airplane mode then turning it off?
Click to expand...
Click to collapse
Say I'm at work on 4G. When I get home and then turn the 4G radio off and turn WIFI on, the WIFI radio fails to even turn on. I get an error saying it couldn't be activated...or something similar. Haven't tried toggling airplane mode.....
timdsmith72 said:
Say I'm at work on 4G. When I get home and then turn the 4G radio off and turn WIFI on, the WIFI radio fails to even turn on. I get an error saying it couldn't be activated...or something similar. Haven't tried toggling airplane mode.....
Click to expand...
Click to collapse
If you leave 4g and wifi both on through out the day do you run into problems? Or is it just initializing them after they have been off and you've been using the other radio.
midri said:
If you leave 4g and wifi both on through out the day do you run into problems? Or is it just initializing them after they have been off and you've been using the other radio.
Click to expand...
Click to collapse
So far it's been just initializing them after I've been using the other radio. My habit has been leave home, turn off WIFI and turn on 4G. Arrive home, turn off 4G, turn on WIFI. I haven't tried leaving both radios on all day... Hmmm....
Airplane mode does nothing.
Wifi on, turns off 4g. You can have one or the other on, not both.
Reboot phone, the first one you turn on, either wifi, or 4g, gets control until the next reboot.
I cannot find any way around it. Going to test a stock rom.
Stock ROM had 4g turned on and connected. (this is stock with the latest update)
Turned on wifi, it changed the status of 4g to Disconnected and it did enable wifi.
Must be something with the radio..
I am on DC 3.2.3 and baseband version 2.05.00.06.10
I'm on DC 3.2.3 Baseband version 2.05.00.06.10.
Radios *should* be fine. I did whitslack's method then flashed DC on top of that. Grrr... Sure is annoying having to reboot twice a day.

4g Radio Won't Stay On (Toggles on/off forever)

Got a strange issue here. My wife and I have had evos since release and 4g worked fine on both when we got them. We're in Boston and since Boston didn't have official 4g until last week, neither of us have used the 4g radio until we read that boston was flipped on last week. On both evos, we're finding that when we toggle 4g on, it takes the normal ~20 seconds to turn on and then it scans for a second or 2 before turning itself off. After turning off, it turns on again and repeats this on/off routine indefinitely. I am only able to stop the loop by pressing the "4g off" button while the radio is scanning for a few seconds. The radio then turns off and stays off. On my wife's phone, the scanning only happens for a split second so it's almost impossible to stop the loop. Her battery dies in ~4-5 hours because of this.
Both evos are stock 2.2 and both pretty different launcher/app setups. I've tried removing common apps between the phones with no luck. I'm at a loss for what might be causing this. I've searched and found this thread but there is no solution:
http://androidforums.com/evo-4g-support-troubleshooting/158160-4g-failed-connection.html
Next step is to call sprint but that is always a last resort. Any ideas?
that's pretty weird. From what i know this happens when you root and flash roms/kernels. Your mac address gets changed. I'm having the same issue atm, but my evo is rooted.
Either your mac address was changed for some reason, or your rsa keys are gone.
Last-Chance said:
that's pretty weird. From what i know this happens when you root and flash roms/kernels. Your mac address gets changed. I'm having the same issue atm, but my evo is rooted.
Either your mac address was changed for some reason, or your rsa keys are gone.
Click to expand...
Click to collapse
i read about people losing 4g due to rooting issues and keys getting lost. but from what i read, it seems these people are able to turn on their 4g radio without issue but it just scans forever even though they are located within range of a 4g tower. i'm seeing something different here. the 4g radio goes into an on/off loop and barely scans at all.
Not sure I'll be much of a help, but....
Make sure you are outside in a guaranteed coverage area. 4G signal doesn't have the penetration or range of 3G/EV or 1x Voice radios. Confirm that you have 4G signal in that area with someone else who has a 4G capable device.
Then, if that doesn't help, you can go for more extreme methods, such has completely reset one of them back to factory, redo your data profile and test again.
If that doesn't work, you'll probably be stuck with calling Sprint.
If it were me, I'd do the outside and confirm 4G first, then call sprint and see if they can refresh your profile or something before going to the extreme of hard resetting back to factory.
Just because the maps say you have 4G, doesn't mean you do right where you are. There's an app in the market that folks are using to find actual coverage, called Mapviewer by Sensorly. That may help you see where others have reported good signal.
GL!!!!!
thanks for the tips. when i was playing around with 4g back when i first got the evo, i found that i could turn the 4g radio on even when there was no 4g signal and it would just scan for a long time. is this still how it is supposed to work or did they implement some auto-off feature such that the radio turns itself off if it doesn't see a signals after a second or 2? because right now, the 2 evos in my house turn off immediately after turning on and then continue the on/off loop. so it doesn't seem like i can get the evos to behave properly even without 4g signal. i may try calling sprint to try the data reset.
I would give it some time to ramp up - I started in another thread how all of a sudden I'm getting 4G in NJ - and we're not supposed to have it yet at all. I can connect, but it just cycles through connected and diconnected (making it essentially unusable). I would imagine it will begin to normalize after a while.
edit - misread the op, sounds like you're having a different kind of issue. nm
Also, that is how the antenna works - it will keep scanning indefinately until either the battery is dead, or it connects.
hperry said:
i read about people losing 4g due to rooting issues and keys getting lost. but from what i read, it seems these people are able to turn on their 4g radio without issue but it just scans forever even though they are located within range of a 4g tower. i'm seeing something different here. the 4g radio goes into an on/off loop and barely scans at all.
Click to expand...
Click to collapse
nah he's having the same exact issue as me.
Here is the order of what happens:
1. Turning on...
2. Scanning...
3. Authenticating with sprint.. (sometimes you see this, sometimes you dont)
4. Turning off
5. Go back to 1, and repeat
^^ From what he said, that is pretty much exactly what it sounds like. And that's the same problem I'm having with rooted phone.
Last-Chance said:
nah he's having the same exact issue as me.
Here is the order of what happens:
1. Turning on...
2. Scanning...
3. Authenticating with sprint.. (sometimes you see this, sometimes you dont)
4. Turning off
5. Go back to 1, and repeat
^^ From what he said, that is pretty much exactly what it sounds like. And that's the same problem I'm having with rooted phone.
Click to expand...
Click to collapse
that's pretty much it except i've never gotten to the authenticating part since this issue started. also, my phone scans for a few seconds before the 4g turns off. my wife's phone turns off almost instantly after the radio finishes turning on. this is the biggest issue because there is no way to interrupt the loop on her phone. even a reboot with battery pull doesn't stop it.
performed a hard reset on my wife's evo and that fixed it on her phone. mine will be tricker because of customizations. what a PITA.
called sprint and the tech support basically said the 2.2 update has caused lots of problems and they are waiting for "htc and android" to release fixes. so, of course, not sprint's fault at all. she told me just to use 3g and not 4g. pathetic.
did the hard reset on my evo and now the 4g radio won't turn on at all. it just sits on "turning on 4g..." for a few minutes before coming back with "unable to start 4g". i've tried 3 different types of hard resets (buttons, clear storage, and ##786#) and all with the same result. sprint is telling me my phone may be hosed but they won't give me a replacement because a fix is supposed to be released eventually. ugh...
Did anyone find a solution to this problem?
I was in Las Vegas on Friday, and 4G worked fine, but since then my 4G is doing what the OP said. I haven't changed anything in the Rom or Kernel.
Thanks!

[Q] 3g Mobile Network Issues

A lot of times lately I'm losing my 3g Mobile Network, my signal strength will be a full 4 bars and I still get the issue. Usually if I reboot the phone it will come back. I'm starting to think it gets lost after it connects to WiFi and then when I disconnect WiFi. Anyone having this issue? If so, are there any tricks to getting this to stop?
My phone is completely stock 2.2, no root.
I'm not sure which of these events may have triggered my intermittent lack of 3G connectability but these are the only changes I've made since this started happening:
1) Upgraded to Froyo.
2) Performed the .dun trick to allow 3g Hotspot. (Although I never use it, I tested it a few times but this problem happens without the Hotspot turned on.)
Did you do a factory reset after the froyo update?
Sent from my Incredible using tapatalk.
Nope, I used the SD card method before I got the OTA. Have never done a factory reset.
I have this as well, be it im on a different carrier (Cricket) but it appears in all stock htc froyo builds.
My assumption is that is the radio being used. of how HTC's implementation of Froyo interacts with the radio.
I switched radio's and havent had it occur on me while in the OS yet, and it does occur sometimes on boot still, but if it loads on boot it seems to stay up and stable.
My trick is to turn airplane mode on for about 30 seconds (30 seconds after i see the airplane icon), then turn it off, i assume this reloads the radio, when the brings 3g back.
I can also read my nv settings with qpst and reflash them back to the phone with no changes, which causes the radio to reload as well, and 3g ALWAYS kicks back on.
Also updating the PRL (even if its the same PRL) seems to work as well (assuming this is due to the reboot, which reloaded the radio)
The radio i am using now is:
2.15.00.09.01 - Seems pretty stable, except the occasional one of at boot, which is fixed by airplane on/off.
From what i can gather this nothing to do with custom roms, as many offical Verizon customers on Official NON Rooted 100% completely stock phones have this as well.
Hopefully HTC/Verizon will fix this in a MR update.
token419 said:
My trick is to turn airplane mode on for about 30 seconds (30 seconds after i see the airplane icon), then turn it off, i assume this reloads the radio, when the brings 3g back.
Click to expand...
Click to collapse
I'm gonna try that next time it happens. Easier than rebooting, then it wont bother me too much.
I had that problem once, and never saw it again.
One problem that just happened for a second time today is I cannot send or recieve MMS. HTC had me reboot the phone and call VZW support, of course they yelled at me for not using a task killer -.-
The reset worked, but I'm going to get annoyed if this becomes a regular problem
I have same setup and same issue. As soon as I made the EPST changes for tethering and hotspot, I started having this issue where I'd lose my data connection completely after disconnecting from my wifi when I leave my house. A reboot of the phone fixes it but it's still kind of annoying. It happens I'd say about twice a week.

[Q] 4g tries to turn on and then immediately turns off?

It seems like after I installed MYNs twopointtwo RLS-2, 4g stopped working. I can click on Turn 4g on, and it acts like it is starting up but after ~20 seconds it turns itself off before getting an ip or anything like that. Any ideas/fixes?
Sorry if this is already posted, I couldn't find it...
This same thing is happening to me as well. Did you ever resolve it?

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