[Q] I9505. No signal when using 3G/4G. 2G works - Galaxy S 4 Q&A, Help & Troubleshooting

Hi.
After updating Danvh's lolipop-rom to the latest version, I lost my signal and wifi. When I force my phone to use 2G (GSM only) in network-settings, everyting works normal.
But of cource I want the speed of 3G and 4G when using internet!
Sometimes (not often) 3G works.
Sometimes the phone says it has signal, but calls, internett etc don't work
I tried to flash the latest modem (XXUHOC6), but no luck. Have also tried modem XXUGNK4, XXUHOB8 and XXUHOB7. I tried to go back to the older version of the custom rom, but no luck
I have now downloaded the latest official stock rom from sammobile. But same problem with stock rom.
Any suggestions?
I have IMEI

Sorry, I have the same problem and I am still searching for a solution. And I have been trying everything as you and no solution. Sometimes I think is a hardware issue.

Very frustrating :S
Hope to find a solution soon.
I dont want to buy a new phone yet. There is no other phones out there that I want

Related

Network problem

Sorry for my english
I have a problem.
I was on this rom
http://forum.xda-developers.com/showthread.php?t=2044797
after all i flashed this one
http://forum.xda-developers.com/showthread.php?t=2192807
but i didnt like it and i came back to negan rom.
(Yes, I did full wipe)
Now i habe problem with 2g and 3G internet.
Google play and browser detect no internet, but i can log into my google account.
My chat (Gadu-Gadu) works fine...
I tryed to go back to stock rom, and root, instal 2ndboot, and flash one more time negan Rom.
Problem is still there.
what i can do?
Checked baseband to match your region already?
Was it working before? Doesn't seem like a baseband issue.
Sent from my MB526 using xda premium
3G do not work
i've a similar problem with the last nightly:
Every think working fine except the 3G reception only.
I've try to change the base hand configurations but the problem still there.
Wi-fi working fine
Sms OK
Gsm seems OK
Just the 3G
Any suggestion?
Tnks
(i have a Brazilian network "vivo")
base band selection
kindly suggest base band selection for mb 526 ....having network problem with my moto defy plus after installation of cm 10

[Q] i have a question and i'm confused.. plz help me

ok here it is. i've flashed various roms but don't really know what everything is, i just followed all those insturctions but never bricked my device..
I live in China, use 3g mobile internet, my phone is korean note2(shv-e250l), use slimkat 4.4.2 nightly, bandwidth MI1, kernel thor 2.9.
i've been using these for about 1 month, and there was not any big problems, except that it feels like my signal strength or internet speed isn't as good as stock rom
but yesterday, when I hung up after calling my friend, all of sudden my phone can't read my sim card, so i reboot the device, and my mobile network doesn't work, and i reboot again, finally everything works.
after that, everytime i call someone my phone goes stupid and i have to reboot it twice.
and I started to wonder, does my bandwidth need to be updated? can I use newest stock rom's bandwidth?
newest stock rom of korean note2 is NA1, will using its bandwidth solve my problem?
if it does the magic, how do i apply bandwidth of NA1 to my phone?
HELP ME.............

[Q] Modem Question.

Good day to all!, Yestarday i purchace a note 3 n900 and the firt thing that i did was to flash a kitkat rom, i live in central america and i flashed a indian rom, everything is working fine but the 3g, its not stable at all, sometimes will work normaly for a few seconds and after that it wont work, its constantly changeing from 3g to H+ and it will drain the battery really fast, i change the setting to work on EDGE and it will work correctly, slow but fine.
now i was checking over the internet and i find that the modem on a firmware can cause problems with the signal, now mi question, can i flash a modem from a 4.3 firmware to a 4.4 firmware?
sFranKv said:
Good day to all!, Yestarday i purchace a note 3 n900 and the firt thing that i did was to flash a kitkat rom, i live in central america and i flashed a indian rom, everything is working fine but the 3g, its not stable at all, sometimes will work normaly for a few seconds and after that it wont work, its constantly changeing from 3g to H+ and it will drain the battery really fast, i change the setting to work on EDGE and it will work correctly, slow but fine.
now i was checking over the internet and i find that the modem on a firmware can cause problems with the signal, now mi question, can i flash a modem from a 4.3 firmware to a 4.4 firmware?
Click to expand...
Click to collapse
No
it s simple 4.3 modem won't be compatible on 4.4.2
:good:

[Q] xcover 2 (GT-S7710L) not getting high internet

Hi all!
1. I bought my phone (xcover 2 GT-S7710L) in the states, and when I brought it back with me to Israel, the internet doesn’t work properly. It's very slow, and shows only "G", not 3G, H or H+ like it should. Is there anything that can be done? A new modem?
2. I tried to update it do KK (from JB), and it wouldn't recognize the sim at all. Perhaps it's because I got a rom for S7710 and not S7710L (?) - do you know about a rom that supports the device? I've tried both Vanir and CM11, with no success.
Thanks! Itai
zilmsys have
Did you ever get this figured out? I'm having a similar problem with my GT-S7710L (i'm in the US) after having flashed Rom and recovery for the GT-S7710. Except I have not mobile data at all. I can still text, call, and I have wifi.
nope
alforddm said:
Did you ever get this figured out? I'm having a similar problem with my GT-S7710L (i'm in the US) after having flashed Rom and recovery for the GT-S7710. Except I have not mobile data at all. I can still text, call, and I have wifi.
Click to expand...
Click to collapse
The KK rom (for GT-S7710) i've flashed made the phone pretty useless - sim not working at all.. I manged to flash the JB stock rom, and it is back as it used to be - low speed internet, and a working sim card.

Can't connect to LTE

Hi,
So I have only 3G connection on my Note 3, can't connect to LTE. I think it broke down a while ago when I was updating MagmaNX to UX10. ROM was working fine so I decided I don't want to break it down further and decided to go on with just 3G. But recently I decided to switch back to RR N by vidwhal, becuase Magma became laggy so I started playing with different modems and the result was either bootloop on older modems or just 3G connection on later ones. Currently I'm on CP_N9005XXUGBPG1 but I tried almost all of modems and BL from this thread https://forum.xda-developers.com/galaxy-note-3/general/bootloader-baseband-bl-cp-samsung-t3582504
It's apparently not ROM dependant as it's broken on both MagmaNX and RR N. Any other ideas on how to fix it?
Oh, and GPS also became pretty bad, it takes a few minutes to get the first fix.
If it matters I live in Poland.
Usual reply wipe phone flash stock rom .
Wouldn't connect to LTE on stock as well. Finally I found out it was not my phone's fault but carriers. Other SIM card in my phone has LTE and my SIM in another does not.

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