Issue 4G/3G switch - Galaxy Note 3 Q&A, Help & Troubleshooting

Hi, i have an n9005, N9005XXUDMJ7 bande base and JSS15J.N9005XXUDMK2.
i live in France,sometimes (2 times this week) When i travel from an 4g area to a 3g area, the phone don't switch.
4g logo with arrow animated, no bar at all, no network too. .Plane mode don't change anything, only a reboot work.
Any idea to solve the problem?
Thank you

I have the same problem... Running KitKat.

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[Q] [GT-I9505] Problem switching 3G -> 2G

Hello,
I have a problem with my Galaxy S4.
When the mobile lost the 3G signal, at home for exemple because the signal is poor, the mobile shows the "no signal" icon during 10-30 seconds in the status bar before switching to 2G signal.
For me it's not normal ; because when a mobile is in 3G mode, it has to listen 2G cells for a rapid switch in case of 3G poor signal.
I tested the transition 3G -> 2G with my Galaxy S2 and there is no problem with this mobile.
Anyone has the same problem with the Galaxy S4 ?
Thank you.
same happening here for many others too... please check this.. though there is no absolute solution to it..
link here

[Q] Emergency Calls/No service issue at 2G

Hi Guys
lately i have upgraded my N4 from 4.3 to 4.4.2, i the network signal only shows one bar when working on 3G, when i switch to 2G a triangle occurs in the opposite side of the top screen and it says emergency calls only, in the status of the phone the received signal is 0 dbm and 99 ASU, I tried resetting my phone but it also have the same problem, also when i tried to select a network on 2G it didnot find any network.
please help is needed urgently......
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[Q] Problem with 4G to 3G switch on Kit Kat

I recently upgraded to Baja ROM from rooted JB stock and ever since have had problems switching to 3G from 4G. If I turn my phone on in a 3G area, 3G data works. However, if I travel to a 4G area and the phone connects to 4G, when I return to a 3G area, 3G data no longer works. The notification bar has a grey out 3G (wifi is off). Voice still works. I cannot get data again unless I either go back to a 4G area or reboot my phone. Turning on and off airplane mode doesn't help. Does anyone else have this problem? I have tried various modems, including NC4, NC2 and MJE. They don't seem to make any difference. Anybody have any suggestions? Thanks for you help in advance.
P.S. I live in Appalachian mountains where I am constantly roaming on Appalachian Wireless. They did partner up with Verizon to get 4G LTE so I suspect when I am on 4G, I am on Verizon network. I don't know if roaming makes any difference.

9505 No 3G / 4G But with 2G

Hi everyone!
I am currently having issues with my 9505 XXUGNG4. Yesterday morning, i have a 3G and 4G Signal. after my 1 hour Airplane Flight, I lost my 3g and 4G signal But I have a 2G signal. Everytime I tried to switch to WCDMA only, i can't seem to search for a signal. I tried Flashing Full Firmware, Hard reset and Modem only from this thread.
Anyone might have a fix for this?
commandcontrol said:
Hi everyone!
I am currently having issues with my 9505 XXUGNG4. Yesterday morning, i have a 3G and 4G Signal. after my 1 hour Airplane Flight, I lost my 3g and 4G signal But I have a 2G signal. Everytime I tried to switch to WCDMA only, i can't seem to search for a signal. I tried Flashing Full Firmware, Hard reset and Modem only from this thread.
Anyone might have a fix for this?
Click to expand...
Click to collapse
Anyone?

910C LTE and 2G works, but no WCDMA

So the thing is, a month ago my note 4(6.0.1) for some reason stopped working in 3G or 4G.
Things I've done in order to fix it:
- factory reset
- updated to the latest baseband
- changed sim-card to latest possible
- changed carrier
So right now I'm using a different carrier and have 4G and 2G, but when I switch to 3G, for some reason I can't use internet at all.
Is there a possible fix for this issue? Can this be a hardware problem, considering that 4G and 2G are still fully working?
Also, during 3G usage I've checked service mode menu and it says GMM State: Limited Service.
When I use 4G or 2G, it doesn't show this.
What can this possibly mean?
thanks

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