3g won't go back to 4g - LG Revolution

Title pretty much sums it up. Whenever my phone goes to 3g it won't go back to 4g til I reboot or until put it in airplane mode and back.
And as a side note, whenever I put it in airplane mode and change it back my phone reboots itself..

That's strange. Are you rooted? Do you have any apps that tinker with data settings?
Try a data wipe

Not rooted, the only app I have that I think may do something is zdbox but I doubt it does

I would uninstall it first and see what may be going on. Are you still unable to connect to 4g without rebooting when on 3g?

Is possible the 4g network is having issues in your area. What city? I will check the alerts at work and see if there are any issues in your area
Join the revolt!

It only does it like once a week. Good ole Dayton ohio

Also something I just realized, every time i turn on my wifi my phone goes to 3g

Related

4g lte gone, ideas?

Ok here's the deal. Upgraded to ICS 232 and all went pretty much flawless other than motoprint no longer works. All was good and I was in happy land. However with ICS was stuck in 4g mode all the time and was sucking my battery like a hungry vampire. So I went into phone info and changed to CDMA auto PRL . Locked me in 3g only. Was back in happy land, battery life good again. Well I wanted to use my 4g so I went in to turn it on and it kills all data. No 4g, no 3g not even evdo. When I reboot it always resets back to CDMA auto PRL only.
Any ideas short of factory reset?
confuzzled1007 said:
Ok here's the deal. Upgraded to ICS 232 and all went pretty much flawless other than motoprint no longer works. All was good and I was in happy land. However with ICS was stuck in 4g mode all the time and was sucking my battery like a hungry vampire. So I went into phone info and changed to CDMA auto PRL . Locked me in 3g only. Was back in happy land, battery life good again. Well I wanted to use my 4g so I went in to turn it on and it kills all data. No 4g, no 3g not even evdo. When I reboot it always resets back to CDMA auto PRL only.
Any ideas short of factory reset?
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Click to collapse
Turn off phone, remove SIM, reboot without SIM. After it's on, turn it off again, re-insert SIM and restart it. Try toggling 4G with *#*#4636#*#*
This sometimes works, as does toggling airplane mode
linuxgator said:
Turn off phone, remove SIM, reboot without SIM. After it's on, turn it off again, re-insert SIM and restart it. Try toggling 4G with *#*#4636#*#*
This sometimes works, as does toggling airplane mode
Click to expand...
Click to collapse
Same problem for me. I have tried toggling airplane mode, tried toggling wifi, rebooting, simply cannot get the phone out of cdma only (prl) mode.if anyone has experience in fixing this, it would be greatly appreciated! I even went though VZW's level 3 tech support and told then I have Ics on my bionic (which didn't void my warranty?) But they were at a loss...
SOLVED
djmatt8787 said:
Same problem for me. I have tried toggling airplane mode, tried toggling wifi, rebooting, simply cannot get the phone out of cdma only (prl) mode.if anyone has experience in fixing this, it would be greatly appreciated! I even went though VZW's level 3 tech support and told then I have Ics on my bionic (which didn't void my warranty?) But they were at a loss...
Click to expand...
Click to collapse
you cannot switch back to 4g (LTE/CDMA/EvDo) if you have "Data roaming" enabled. Uncheck the data roaming box and try it again. Worked for me. :good:
Had this happen to me when I tried to enable Juice Defender's AOSP helper on the official ICS (though I had to update manually using HouseofBionic's method). It dropped me to 3G only, and the "preferred network" setting is grayed out, but showing LTE/CDMA. Clearly, the setting was inaccessible.
I uninstalled AOSP Helper, then disabled JuiceDefender.
Then I went into the Hidden Menu (that 4636 thing) and it says CDMA Auto (PRL). I tried to change it to CDMA/LTE/EVDO , then reboot, but it's still 3G. Went back into Hidden menu, it's back to CDMA Auto (PRL).
Went back in, change it again to CDMA/LTE/EVDO, but this time there's a "refresh" button below that, to update the IMSC I think. I hit that.
Reboot phone, now I have no 3G
Went to settings / data usage to toggle data, nothing.
Went to airplane mode, out, and voila, 4G/LTE.
Not sure which one of those actually forced the update, but it worked, so if someone else had the same problem, try that.

[Q] Crappy switching between 3G and 4G data on Sprint

I've found that this phone's ability to transfer from 3G to 4G data is absurdly slow, if not completely useless. It also seems that it will never switch if there is data transfer in progress. The only reliable way to make it work is to airplane for about 10 seconds, then turn it back on. If there is 4G coverage, it will come back on immediately into 4G.
Example of a common daily routine... When I leave work and walk outside, there is full strength 4G. But the phone will be sitting on 3G from when I was inside. It will not switch to 4G unless I airplane it first to cut it off and back on. The 3G data here is literally like a dialup 14.4 modem. So it will just sit there trying to sync or do whatever its doing until the cows come home. It will never change to the readily available 15mbs 4G data.
It is so bad, I had to make a tasker function to airplane, wait 12 seconds, and turn it back on. I made it a widget called "Reset 3G/4G".
Any way to fix this crap?
Sprint requires a Sprint forum see sticky top of the page .
Unless you have the I9300 as per this forum .
jje

[Q] HTC One signal drops

Hi all,
I have bought a Htc One M7 handset recently and I have noticed time to time there are No Signals (Limited Service) on it. When I switch off/ switch on or if I turn on the Airplane mode and turn off again, the signals will restore. This is happening around 2 times per day and really annoying. Need to know whether this is a known issue for the model.. I still didn't change the SIM and check. Please help!!!!!
Thanks alot!
Fellow Sufferer
shehanj101 said:
Hi all,
I have bought a Htc One M7 handset recently and I have noticed time to time there are No Signals (Limited Service) on it. When I switch off/ switch on or if I turn on the Airplane mode and turn off again, the signals will restore. This is happening around 2 times per day and really annoying. Need to know whether this is a known issue for the model.. I still didn't change the SIM and check. Please help!!!!!
Thanks alot!
Click to expand...
Click to collapse
I have the same thing
To add some detail for diagnostics see below:
- I travel into London every day and sometimes when signal drops in the tunnels it will never pick back up again after leaving them whereas my old One X did not have this on the same journeys.
- It even dropped out mid call and came up with the sim card icon at the notification bar as if no card inserted (but no selectable notification) first time its happened to this extent.
- Do you have a 4G SIM/connection or are you on 3G like myself? I'm thinking perhaps its something to do with trying to pick up 4G instead and completely disregarding the 3G connection that is available.
- I have also noticed that ever since getting the handset its never had as good signal as my One X which was pretty much always full signal in my normal areas (home, work etc) This may just be the way the handset gauges the signal not the signal itself but something to note anyway.
I'm having the same issue here in the US. It's prolly my only complaint with my phone.
Sent from my HTC One using xda app-developers app
I'm also having this issue but more sever with an all-day no signal. After reboot, I gain signal and I can't make and receive calls.
Try to turn 4G off.
mrcaligula said:
Try to turn 4G off.
Click to expand...
Click to collapse
How does one do that? Having the same problem, both wifi AND mobile network drop off. Wifi comes back on its own after a few seconds, the mobile data connection often comes back (obviously if not on wifi away from home), but the mobile network stays as no signal and doesn't come back, unless I reboot or cycle aeroplane mode. I know there's some problems with touching antenna, but this is happening a lot in the car, when the phone is powered and sitting in a cradle.
bmcconalogue said:
How does one do that? Having the same problem, both wifi AND mobile network drop off. Wifi comes back on its own after a few seconds, the mobile data connection often comes back (obviously if not on wifi away from home), but the mobile network stays as no signal and doesn't come back, unless I reboot or cycle aeroplane mode. I know there's some problems with touching antenna, but this is happening a lot in the car, when the phone is powered and sitting in a cradle.
Click to expand...
Click to collapse
To turn off 4G you go to Settings -> Mobile data -> Network mode and then select "3G / 2G"
don't know if it'll help though, but trying is worthwhile
nkk71 said:
To turn off 4G you go to Settings -> Mobile data -> Network mode and then select "3G / 2G"
don't know if it'll help though, but trying is worthwhile
Click to expand...
Click to collapse
Thanks. The problems seems to have gone with that change. Perhaps it is some system thing kicking me off the network because I don't have 4G on my contract and my phone was trying to get it.
Now, if you can just tell me why my lovely 3-4 bar indoors signal on EE has dropped to 0-1 outdoors (as they deny there is a problem)
bmcconalogue said:
Thanks. The problems seems to have gone with that change. Perhaps it is some system thing kicking me off the network because I don't have 4G on my contract and my phone was trying to get it.
Now, if you can just tell me why my lovely 3-4 bar indoors signal on EE has dropped to 0-1 outdoors (as they deny there is a problem)
Click to expand...
Click to collapse
Are you sure it's not just cosmetic? Try going into Settings->About->Network and see if the signal (dBm) is dropping.
Sent from my HTC One using xda app-developers app
I have it constantly on att - I have to turn on airplane mode and turn it back off to get my network back, I have tried different roms and updates and still the issue is across all roms.
Maybe try this: in your dialer type *#*#4636#*#*. Once the menu is opened, select Phone information, then scroll down to Set preffered network type and choose one of the options (im from Serbia, europe, and I usualy go with GSM auto (PRL)).
Issue with 3g only
Whenever I keep it on 3G, it drops signals for 2 to 7 seconds at random intervals. People often complain that when they call, they get a message that my phone is switched off.. I am probably gonna try another ROM and SIM to see if that helps before dumping this phone forever.
how to solve limited service or loosing service on htc one m7
Hello
it seems to be a hardware fault where the radio is not staying on higher band
it seems to be having issues on 2100 and all umts and hspda or lte networks
however switching back to 2 g can resolve this issue and phone ( hope so) will never lose signals or drop then again
i tried this and for me this works fine so far over 12 hours now no issue
give it a try and see this should work
setting>data>network>2g only
by this you wont have option to use fast internet though but at least you can phone can be used for voice calls messaging etc and also wifi too
I was on stock lolli pop and tried to flash cm12.1 but does not help sort the limited service issue
enjoy and leave your feedback
Edit:
some people cant find 2g in settins>mobile network>preferred network type> lte or 3g only, the solution is go to *#*#4636#*#* phone info>set preferred network type>gsm only( this will put your device into 2g mode)
hope this work

VZW Moto X not going on 4G

so i came from my GNEX and needed to cut the SIM from micro to nano. came out damn near perfect. put the cut SIm in my moto x and it worked. 4G comes on and all is well for about a minute or i use my data in anyways. it will instantly drop down to 3G. Verizon did the whole "Restart and factory reset" BS and nothing helped. they tried a new sim and it wouldnt accept it.... what do i do
so now that you have a new SIM card. the phone wont read it at all so you have no data what so ever?
savini72 said:
... 4G comes on and all is well for about a minute or i use my data in anyways. it will instantly drop down to 3G....
Click to expand...
Click to collapse
I don't know much to help, but I noticed on my new Vzw Moto X that right after activation, my 4G light was on. I continued the setup and 4G turned off almost immediately. That was odd, but I was activating at home. I need to port in a number and visit a store, so I thought I would ask at that point. I was at home with WiFi. Anyway - I noticed that when WiFi is off, 4G is on. As soon as I turn on WiFi or connect to a WiFi access point, that 4G turns off. Could this be it?
- L
i have data and everything is working fine, but its only 3g. ive tried a new sim, hard reset, changing my data from global to 3g/4g adn all i can get its 3g.... i mean it works but jsut annoying
have you done any major changes to the phone recently?
if you haven't done any changes then sounds like there end not yours. only thing left you could try would be to use one of the restore to stock zips and try flashing it and see if that fixes it.that file contains all the modem's and so forth.
also like the other guy said are you connected to wifi and are you even sure you get 4G at your current location. i would restore my device to stock with the correct zip and see if that fixes it.
Wrong post
I'm going to just try Verizon again and if they can't fix it demand a replacement... Why have a 4g phone when it's not using It
so after 2 new SIMS and 4 factory restarts, the VZW rep fixed what was wrong. now, time to see how long my battery life is with 4G on!
savini72 said:
so after 2 new SIMS and 4 factory restarts, the VZW rep fixed what was wrong. now, time to see how long my battery life is with 4G on!
Click to expand...
Click to collapse
What'd it end up being?
Slapped my Moto
Lacrocious said:
I don't know much to help, but I noticed on my new Vzw Moto X that right after activation, my 4G light was on. I continued the setup and 4G turned off almost immediately. That was odd, but I was activating at home. I need to port in a number and visit a store, so I thought I would ask at that point. I was at home with WiFi. Anyway - I noticed that when WiFi is off, 4G is on. As soon as I turn on WiFi or connect to a WiFi access point, that 4G turns off. Could this be it?
- L
Click to expand...
Click to collapse
I have noted the same thing, and was curious.
Per VZW customer support today, that is normal operation.
The reasoning is as I expected:
Once you have a wifi connection (not just the wifi radio turned on), that connection will be responsible for data communications. The data capability of 4G is redundant, and the phone drops back to 3G operation to support phone only operations (voice, sms, e911, etc).
As I understand it, this should reduce both your battery usage, and of course VZW's tower's data load.

3g not working if radios set to 3g only?

I noticed if I go to the mobile networking settings and have it it on lte/3g if I leave a 4g area, 3g works ok. If I put the toggle specifically on 3g it shows I have 3g, but anytime I tried to search google or access a data connection the signal goes away and gives me the signal with an exclamation point. I tried finding info on this, but didn't see anything when I searched. Anyone else have this issue? I am on Sprint with the 64gb white device. Thanks
I leave mine on 3g due to the lame multiple text issue. It has no problem staying on 3g. Perhaps try updating your PRL/profile and see if that helps.
I don't have 3g either if I set it to 3g only. I don't leave lte service too often to test whether 3g works when it switches on its own. I may have to make a trip to the mountains to test it. I do know that my old Note 2 would loose lte after flashing tons over and over and I would have to flash back to 100% stock the factory reset from the settings app to fix it. I may try this with my Nexus, about time for a wipe anyway.
Factory reset does not fix it. Just noticed that I don't even get 3g when it is set on LTE. I'm gonna go talk to my cellular provider about it.
I don't know why it wouldn't work. You did update profile and PRL also right? Here's some shots of mine and it's working fine.
I have a bad Sim.....I also don't have a phone number as well..... I swiped with an old card I had and my number appeared, I guess I'll be visiting the store tomorrow to get a new one. Maybe it'll fix my 3g. Its also not wanting to let me pick 3g as an option now, just stays on LTE.
KB112 - Are you on sprint also? I updated prl/profile and no luck still. 3g still works if I am on lte and go into a 3g zone, but if I toggle it to 3g only I get no data. Wondering if its a sprint thing or a lollipop bug on Sprint, or a bad sim, missing feature activation.
Bluemgt06 - did a new sim fix it for you?
Sorry, didn't see this earlier. But yes, I am on Sprint. My 3G would work fine if I set to 3G only. Not sure why yours has issues with this?
Oddly I tried it today and it started working. I think it could have been some kind of issue with the tower/upgrades or a bug that a reset may fix on occasion perhaps.

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