Develop Bugs

[Q] Weak Wi-Fi signal

Hello.
I have flashed my Note II with ReVolt JB (stable) following all developer instructions and after that my phone can't connect to my router because of low signal level as it thinks.
Wi-Fi connect is only possible if i place Note on the router. I came from the stock ROM and everything worked properly. I changed Kernel to AGNi 4.2.2 Auto OC but nothing became better.
Can anyone tell me what's my error?

gwynnbleidd said:
Hello.
I have flashed my Note II with ReVolt JB (stable) following all developer instructions and after that my phone can't connect to my router because of low signal level as it thinks.
Wi-Fi connect is only possible if i place Note on the router. I came from the stock ROM and everything worked properly. I changed Kernel to AGNi 4.2.2 Auto OC but nothing became better.
Can anyone tell me what's my error?
Click to expand...
Click to collapse
Sounds like a radio issue. Reboot your device and see if you still encounter the problem. If so try flashing a different radio.

Got serious problems with WIFI

Info Phone :
Galaxy note 2 n7100
Rom Ditto N3 4.4.2 RC2
Hi guys , i used Galaxy S5 Ultra Power Saving Mode, and got problem with wifi after restoring it in normal mode. And so my wifi network is not working anymore. Someone got this problem too, how i can fix the wifi?
I tried to reinstalling 4.4.2 rc dn3, but doing so nothing changed and still my wifi dont work, guys plz help me .
The icon of wifi dont show anymore, and it does not detect wifi networks. So the wifi si really death!
Solution that i tried to fix the wifi, but didnt work :
_Update
i now tried to back on 4.3 dn3 and still wifi dont work even in this release, i have same problem , so my wifi is really Death now :/, i really need help here to restore my wifi !!
_Update 2
As a suggestion i tried to flash both Dr.Ketan's Wifi patch and BL_MJ5_DN3 bootloader with odin, but nothing change. Still my wifi is death.
Normally when u put wifi on this show you the icon of wifi and try to scan a wifi spot. But instead in my situation even if i switch on wifi the icon dont show up and dont even try to scan the wifi. There are really a huge problem here...
_Update 3
As a suggestion i tried to change modem too, with the hurricane modem tool, and nothing changed... i tried all the list modem that are in the hurricane tool, but nothing. So i dunno what to do now, maybe i try to restore and old backup image of my stock rom, and see if it work... hope so.
Btw i tried to digit this code on my phone *#0011# and WIFI and its show me this http://imgbox.com/rWcLRuJd, hope this can help someone to resolve my problem...
_Update 4
Ok i tried to install s5mod v1.3 , and switching on ultra power saving mode and turning back and reboot, after still nothing change! Im really in crisis now, guys i need your help to fixing my wifi help me plz

[Q] Wifi Issues After Rooting [4.3, N7100]

Hi all,
I rooted my Galaxy Note 2 N7100 yesterday, which is running 4.3 stock Samsung ROM.
I followed this guide (Philz touch, Multitool to de-knox, cf autoroot)
http://forum.xda-developers.com/showthread.php?t=2642480
My issue is that the wifi connects okay, but will only work for a couple of minutes before 'hanging'. For example, I can load websites for a few minutes, then it will just be stuck with the loading bar about 1/4 complete and do nothing. There are no errors like 'obtaining IP address' or anything, still says 'connected'.
Turning wifi off and on seems to cure the problem for a few minutes again, so does the app 'Wifi connection fixer', again for a few minutes.
I have tried several different wifi networks with the same issue.
My battery drain seems to be worse as well, could it be a modem issue? I was under the impression that root wouldn't change modem or anything like that?
Edit: I also flashed Dr Ketan wifi patch and this didn't seem to work either.
Edit 2: Oh no, mobile data isnt working at all now! What is going on?
Edit 3: Mobile data back working intermittently but very very slow.
Edit 4: Mobile data very intermittent. Working sometimes and not most of the time. Was fine before root. Something strange is happening.
Device details:
GT-N7100
4.3
Baseband N7100XXUENA3
Kernel 3.0.31-2437454 [email protected] #1
Any help appreciated.
Cheers, Stu.

It seems that the wifi and mobile data are following the same pattern.
Resetting them / turning them on and off seems to make them work temporarily and then they hang again.
Any ideas?
Getting desperate here, didn't think root would cause these issues, I thought only changing the ROM / kernel would cause this.

[Q] Problem with Signal/Service - weak Signal, breakdowns

my device now: i9195, I9195XXUCNE6-DBT
I experience weak signal and many connection dropdowns. When this occured first, after i upgraded f4ktion Kernel 1.3.6 to 1.4.5 and
an older version of Carbon Rom (4.2.2) to 4.3 Carbon Rom. Until than everything was fine, flash of rom and kernel did not made any problem.
Btw i used Odin3 3.09 and clean install (step by step like in the guides) all the time.
After some days this realy annoyed me, so i went back to the older Carbon and kernel - problem still occurs.
So i went back to stock rom I9195XXUBML4-DBT (original was UBML4) - problem still existing.
Some time later f4ktion 1.5 and Carbon 4.4.4 was available, so i tried this..still no solution.
Now i am back to stock and updated to I9195XXUCNE6-DBT, same problem.
Some research told me many ne stuff to know..like flashing modem only. I tried some, nothing helped.
After hours of pointless googleing i noticed something on my phone.When i dont type the pin, i have normal signal. As soon as i type the pin
and "activate" my simcard, the signal strength drops. So i googled again and found this:
[Bug Watch] Android 4.3 Radio Bugs Causing Cell Connection Drops On Some Nexus 4 Handsets, Fixes In Sight (not allowed to post links)
I changed the network type to WCDMA only - it helped for some minutes(not many..maybe 2-3). I changed to GSM only and i had normal,
stable signal for like an hour. But later signal loses strenght again, and i need to change network type again.
I have the feeling, that its like a reset or restart of the radio.
But now i am all out of ideas and need some help.
Last thing i can do, is to bring it to repair. But my Knox says 0x1, so maybe you can help me before i ask Samsung.

I have similar problem since ugrading to KitKat roms. I had no problems with previous none Knox roms with MH3 modem but now with NE6 and NF7 KK modems the signal swings constantly up and down from 4 to 1 bars. This is in areas I previously had good signal. Internet also keeps dropping out requiring data toggling on and off. I've reflashed KK 20+ times and haven't been able to get rid of this problem yet.
I'm not sure if pre knox modems are installable but I intend to try and reflash MH3 modem, once I manage to do a successful backup.

I solved a similar problem by downgrade to 4.2.2 Brazil NE2, knox 2. Flashing separate modem (NE2), and reflashing full rom again. No problems for now

Now you stay on 4.2.2 ?
I dont understand why some people do have problems and some not. Is there different hardware version causing the trouble ?
Give me pls some information how you did the downgrade.
-Nandroid Backup
-philz
-Odin (if yes which version)
-why did you choose that rom
I tried to, but wasnt succesfull. I used Odin3 3.09 to flash 4.2.2 (UAMF5 i think) rom and got a brick. When trying to fix this nothing helped until i tried to flash with Odin3 3.04. But all i could do was flashing newest FW again. Did not test more after that, because i was very busy.
If you say that going back solved your problem, i will try again go go back myself. I've found some information on that and when its done i give some informations.

Same here, help?
I'm having the same problem with a newly acquired handset. I have full signal on some places and nothing on others, unfortunately in my house I have no signal! So it's quite exasperating.
My baseband version is I9195XXUCNE6
Android version is 5.0.2 with 3.4.0-cyanogenmod-g92aec50 [email protected] #1 kernel
Cyanogenmod version is 12-20150306-UNOFFICIAL-serranoltexx
Would it help if I flash a separate modem file through Odin? In that case, which one should I flash?
Any help would be appreciated a lot.
Thanks

franzasensi said:
I'm having the same problem with a newly acquired handset. I have full signal on some places and nothing on others, unfortunately in my house I have no signal! So it's quite exasperating.
My baseband version is I9195XXUCNE6
Android version is 5.0.2 with 3.4.0-cyanogenmod-g92aec50 [email protected] #1 kernel
Cyanogenmod version is 12-20150306-UNOFFICIAL-serranoltexx
Would it help if I flash a separate modem file through Odin? In that case, which one should I flash?
Any help would be appreciated a lot.
Thanks
Click to expand...
Click to collapse
If you have warrenty left then you should go to customer service then they will change your mainboard. and it would bw okay.

Problem with WiFi connectivity

model: GT-N7100
currently using cynogenmod 5.1.1
Previously i used to have 4.4.2. I tried cynogenmod for resolving this issue but doesn't work. My phone is able to connect to hotspot, generated by other mobiles. When I switch on my wifi, it detects the available networks but while connecting to them it shows messages like "Wi-Fi Connection Failure", "authentication error occurred ".
please help me with this issue

Factory Reset
Hello and thank you for using Q/A,
can you please try a factory reset.
Regards
Trafalgar Square

Trafalgar Square said:
Hello and thank you for using Q/A,
can you please try a factory reset.
Regards
Trafalgar Square
Click to expand...
Click to collapse
Ya tried that but problem remains same

Hi,
if you want, you can try a Marshmallow ROM.
Kind regards
Trafalgar Square

I have the same issue. Suddenly, my GN2 could not connect to any Wifi router (secure or open), while connecting to hotspots by others.
Phone could connect only if it is very close to the router (couple of centimeters)...which i don't really understand !!
My phone was rooted with TWRP, rune KK 4.4.2 and working very fine for almost 3 years without one issue...this is the first
I tried everything could be done....
- Factory reset
- Rom installation (CM 11.0)
- Stock Rom from sammobile (clean one 4.4.2)
- Even install modem drivers of other revision (don't recall it)
I gonna try marshmallow and see!!
Any other suggestions will be much appreciated..
Cheers,

Same Problem Still No Solution
I have the same problem, this occurred sometime after installing the Temasek ROM 9.1 before that was working brilliantly on Temasek and on Stock ROM reverted back to stock did a factory reset but no avail had posted on the Temasek for N7100 by Trafalgar Square but received no reply.
Searched everywhere no answers, went to the service center waited 2 hrs and those duds did not now what to do.
Please if anyone knows what to do please let us know. Thanks
A link to my problem in detail :
http://forum.xda-developers.com/show...postcount=1708

subzero2014 said:
I have the same issue. Suddenly, my GN2 could not connect to any Wifi router (secure or open), while connecting to hotspots by others.
Phone could connect only if it is very close to the router (couple of centimeters)...which i don't really understand !!
My phone was rooted with TWRP, rune KK 4.4.2 and working very fine for almost 3 years without one issue...this is the first
I tried everything could be done....
- Factory reset
- Rom installation (CM 11.0)
- Stock Rom from sammobile (clean one 4.4.2)
- Even install modem drivers of other revision (don't recall it)
I gonna try marshmallow and see!!
Any other suggestions will be much appreciated..
Cheers,
Click to expand...
Click to collapse
I'm having the exact same problem!
It only connects to WiFi if I am standing less than 1 meter from the router! (otherwise it sees the signal, even from far away; but fails to connect)
I'm on 4.4.2, no changes for months solid as a rock then this issue appeared!
Any ideas/solutions?

Bump for visibility ^^

sarasasasa said:
I'm having the exact same problem!
It only connects to WiFi if I am standing less than 1 meter from the router! (otherwise it sees the signal, even from far away; but fails to connect)
I'm on 4.4.2, no changes for months solid as a rock then this issue appeared!
Any ideas/solutions?
Click to expand...
Click to collapse
Check this one:
https://www.youtube.com/watch?v=Ty-ktnu2rjg