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[Q] Nexus S weak Wifi and GSM

I recently purchased a Nexus S (M200) and I am experiencing very low Wifi and GSM signals. In fact, it's so low that I can't even make calls from GSM when indoors and need to get outdoor to get fair signals. Similar issue is with Wifi and I have to be within 10 meters to get a stable Wifi connection.
I have tried various roms and kernels but the problem remains. Even went back to stock gingerbread rom and the same problem. Any suggestion to get this fixed? Seems like a hardware issue and my phone is not under warranty!
Help appreciated.

I experienced the same thing on Cyanogen 10.1 nightly but when I was on stock 4.1 it was ok.
Maybe it's your provider which don't have a good network where you are.
I am sorry for my english I hope you will undrstand me.
Sent from my XOOM 2 ME using xda app-developers app

Otalgia said:
I experienced the same thing on Cyanogen 10.1 nightly but when I was on stock 4.1 it was ok.
Maybe it's your provider which don't have a good network where you are.
I am sorry for my english I hope you will undrstand me.
Sent from my XOOM 2 ME using xda app-developers app
Click to expand...
Click to collapse
I am using the same SIM on a different phone and get perfect signals. I guess it's must be a hardware issue...

Try to flash Radio..

_hito_ said:
Try to flash Radio..
Click to expand...
Click to collapse
I can try that. Any suggestion for a reliable radio to use?

You should get the most recent baseband (radio) firmware update for your model of Nexus S. If you search the forums, you should be able to find a thread all the basebands linked. Be sure to only install the one for the model you have, because the wrong one will not work.

impossibilium said:
You should get the most recent baseband (radio) firmware update for your model of Nexus S. If you search the forums, you should be able to find a thread all the basebands linked. Be sure to only install the one for the model you have, because the wrong one will not work.
Click to expand...
Click to collapse
Flashed the latest and tested a few others but the same problem

Hi, kamran666,
If you purchased it used I would check if WiFi and GSM antennas are there and properly connected.
Take a look on this video from 2:33.
Hope in might help.

[Q] Cyanogenmod 10.1 RC1 Data Connection Issue

So I did a full clean wipe, twice just to be sure.
Flashed RC1 and everything seemed to be going great at first. Then I noticed that the signal is dropping in and out. (I live in San Diego) It won't hold a signal for any reasonable amount of time. So it drops from 4G LTE going off. I've rebooted. At a bit of a loss. I'm operating on ATT.
Should I try to reflash? I was previously running CM 10.0 with no serious issues.
I've made sure the priority is LTE/GSM
Any help would be greatly appreciated!

May be your APN? What radio are you using?
Sent from my Nexus 7 using XDA

Same happened to me. Reflashed the modem problem fixed.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

I had it on ATT Phone and then switched it to ATT LTE. Issue wasn't resolved. I tried the other APNs as well. Same result.
For poops and giggles I flashed the most recent nightly 05/06 and still had the same issue.
May seem silly to ask, but how do you flash the modem? That sounds like it could be a solution.
Edit: Ermm what radios did you flash to fix the problem?

Looking more like you need the latest UCMC1 radio. Happened with a big kernel update in the nightlies, since this is getting closer to stable, I'm sure we'll see this problem more as more people start updating.
http://forum.xda-developers.com/showpost.php?p=40731838&postcount=594

LoSt180 said:
Looking more like you need the latest UCMC1 radio. Happened with a big kernel update in the nightlies, since this is getting closer to stable, I'm sure we'll see this problem more as more people start updating.
http://forum.xda-developers.com/showpost.php?p=40731838&postcount=594
Click to expand...
Click to collapse
Yea, I flashed that one after I found it on a post about the radios. It fixed the problem to an extent. However I'm getting much weaker signal than usual (although this could be the bars not displaying properly maybe, I don't want to jump immediately to a conclusion) and also am getting the data bars greyed out which means it's not.
Do you recommend reflashing the radio again?

b2tracken said:
Yea, I flashed that one after I found it on a post about the radios. It fixed the problem to an extent. However I'm getting much weaker signal than usual (although this could be the bars not displaying properly maybe, I don't want to jump immediately to a conclusion) and also am getting the data bars greyed out which means it's not.
Do you recommend reflashing the radio again?
Click to expand...
Click to collapse
b2tracken,
Just wanted to say thanks for your post here and that I'm experiencing the same exact thing. Yesterday I upgraded my skyrocket from an old ICS install to the latest 4.2.2 with CM 10.1, coincidentally right when this RC1 came out, so I quickly upgraded from M3 to RC1 last night. This morning I noticed that something was up with the radio and read your post. I flashed the radio to UCMC1 like you probably did and now I'm getting a connection, but about half as strong (in bars) as before the whole upgrade. Really no complaints yet - it hasn't hindered phone calls or mobile data connection - but I would be interested to find out if there is anything I can do to improve it, or configure it properly. I'm a big noob when it comes to phones.
Thanks,
Chad

wickm said:
b2tracken,
Just wanted to say thanks for your post here and that I'm experiencing the same exact thing. Yesterday I upgraded my skyrocket from an old ICS install to the latest 4.2.2 with CM 10.1, coincidentally right when this RC1 came out, so I quickly upgraded from M3 to RC1 last night. This morning I noticed that something was up with the radio and read your post. I flashed the radio to UCMC1 like you probably did and now I'm getting a connection, but about half as strong (in bars) as before the whole upgrade. Really no complaints yet - it hasn't hindered phone calls or mobile data connection - but I would be interested to find out if there is anything I can do to improve it, or configure it properly. I'm a big noob when it comes to phones.
Thanks,
Chad
Click to expand...
Click to collapse
The only other thing that I have changed is going and changing the APN under mobile networks to ATT LTE from ATT Phone. I'm getting about half signal also and intermittent issues with it greying out. (They seem to have not been very prevalent.) Seems that I'm not the only one with the issue which is fortunate. Give that a shot. Hopefully it gets worked out in the next release.

Att ucmc1 apn
SO I've uploaded the original UCMC1 stock ATT APN, you can just create a new APN and set it like these images.
Also wondering, after you cleanup (format data, system, cache, dalvik cache), No reboots, you do the next in the following order:
1-flash UCMC1 Radio
2-flash CM10.1 ROM (I'm still on 04/23 and everything works: http://forum.xda-developers.com/showthread.php?t=2272261)
3-flash gapps from 20130301 (http://goo.im/gapps)
Good luck,
Don't forget to hit THANKS if I helped you

Having the same exact issue, I've done everything stated here, only thing i did differently was updated the radio after CM.

Well the problem came back randomly with RC2 to an extent.
Now everything is showed as greyed out and no connection available including wifi.
Anybody have a clue on this?

b2tracken said:
Well the problem came back randomly with RC2 to an extent.
Now everything is showed as greyed out and no connection available including wifi.
Anybody have a clue on this?
Click to expand...
Click to collapse
Use a sock based Rom. 4.2 drops data and has all sorts of issues.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

In case it was missed, strait from the horse's mouth:
http://forum.xda-developers.com/showpost.php?p=41349665&postcount=2648
topprospect said:
+1. UCMC1 should be used on all current CM10.1 builds. Any older radios will cause major problems with the newer JB-based blobs we use in CM10.1 past around 4/24.
One caveat: I don't know about Rogers users, sorry guys. If you have an official JB release from Samsung, you should use that radio. (Otherwise you will have to use UCMC1)
Click to expand...
Click to collapse
UCMC1 Radio: You must have the latest radio/modem installed or you will experience problems.
http://forum.xda-developers.com/showthread.php?t=2228292

LoSt180 said:
In case it was missed, strait from the horse's mouth:
http://forum.xda-developers.com/showpost.php?p=41349665&postcount=2648
UCMC1 Radio: You must have the latest radio/modem installed or you will experience problems.
http://forum.xda-developers.com/showthread.php?t=2228292
Click to expand...
Click to collapse
It seems no matter what I have issues. Now I'm having more issues with RRs and general crashes that force me to clear completely. I updated the radios but still had issues after. Almost thinking going back to square 1 and rerooting etc etc.

b2tracken said:
It seems no matter what I have issues. Now I'm having more issues with RRs and general crashes that force me to clear completely. I updated the radios but still had issues after. Almost thinking going back to square 1 and rerooting etc etc.
Click to expand...
Click to collapse
No need to root to flash roms.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

xcrazydx said:
No need to root to flash roms.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
I'm aware. I'm already rooted, I just wanted to know if it's worth it to go back to stock then try to redo everything.

You said re-root. You don't need root to flash roms.
And probably not, cm is all busted right now anyways and data drops, reboots and all the other stuff is gonna happen regardless.

xcrazydx said:
You said re-root. You don't need root to flash roms.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
Well I would have to reroot if I took it back to stock. Thus the reroot etc etc

b2tracken said:
Well I would have to reroot if I took it back to stock. Thus the reroot etc etc
Click to expand...
Click to collapse
No you wouldn't
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

b2tracken said:
It seems no matter what I have issues. Now I'm having more issues with RRs and general crashes that force me to clear completely. I updated the radios but still had issues after. Almost thinking going back to square 1 and rerooting etc etc.
Click to expand...
Click to collapse
What nightly are you on? Anything after 4/23 (including the RC's) will have a lot of those instability issues. The developers are working hard to fix it if you want to read the development thread.

Issues with CM-11-20140708

So I just upgraded from CM-11-20140609 to 20140708, and I am very upset at the fact that I can no longer connect to WiFi. If I go to my WiFi settings, all it says is "Turning on WiFi". I cannot turn it OFF or ON. All I can use is mobile data. I had this issue with nightlies after 20140609, but decided to revert back. I do not want to have to revert back. I assumed this new "snapshot" would have working WiFi. Any suggestions?

Did you flash boot.img?

th3pr1nc30f3gypt said:
So I just upgraded from CM-11-20140609 to 20140708, and I am very upset at the fact that I can no longer connect to WiFi. If I go to my WiFi settings, all it says is "Turning on WiFi". I cannot turn it OFF or ON. All I can use is mobile data. I had this issue with nightlies after 20140609, but decided to revert back. I do not want to have to revert back. I assumed this new "snapshot" would have working WiFi. Any suggestions?
Click to expand...
Click to collapse
If you do a search you will see that wifi is a problem with the one s. This is a weird problem for sure. All I can say is try another rom until cm11 gets it fixed or revert back to a version of cm that did work.

No, I updated CM versions through Settings. I'm gonna wait until they get it fixed on the next snapshot or stable release
Sent from my One S using XDA Free mobile app

th3pr1nc30f3gypt said:
No, I updated CM versions through Settings. I'm gonna wait until they get it fixed on the next snapshot or stable release
Sent from my One S using XDA Free mobile app
Click to expand...
Click to collapse
When was the last version that worked? Let them know so they can check the revisions. Otherwise this problem may go on for a long time.

808phone said:
When was the last version that worked? Let them know so they can check the revisions. Otherwise this problem may go on for a long time.
Click to expand...
Click to collapse
No WiFi issues with previous snapshot from June. How do I report a problem to CM?
Sent from my One S using XDA Free mobile app

th3pr1nc30f3gypt said:
No WiFi issues with previous snapshot from June. How do I report a problem to CM?
Sent from my One S using XDA Free mobile app
Click to expand...
Click to collapse
Try posting here:
http://forum.cyanogenmod.org/forum/762-htc-one-s-ville/

El_Svanto said:
Did you flash boot.img?
Click to expand...
Click to collapse
th3pr1nc30f3gypt said:
No, I updated CM versions through Settings. I'm gonna wait until they get it fixed on the next snapshot or stable release
Click to expand...
Click to collapse
El Svanto might in fact have given you the advice you need. I have an HTC One S and ran into the no Wi-Fi issue too after upgrading through settings. After flashing the boot.img though my Wi-Fi works again. As per this guide:
Do I need to flash the boot.img manually in fastboot?:
Yes, if you're using TWRP and your ville has the Hboot-version 1.13 or higher
Click to expand...
Click to collapse
Please check if that is the case and if so, unpack boot.img from the install ZIP and use ADB's fastboot tool to flash the boot.img to recovery from the bootloader:
Code:
fastboot flash boot boot.img
Good luck.

WIFI Weak on LOLLIPOP

Hi
I have a very annoying issue regarding WiFi. After flashing any custom kernel (Ak, furnace...), my wifi speed turns very very slow, it drops from 40 mbs to 2 mbs.
And the only way to fix it is with this app: https://play.google.com/store/apps/details?id=com.brilliapps.wifiandmorefixer&hl=es
As i said this happens after a kernel change. I changed thing on my router, like channel, security protocols, qos but no way, it´s not a router problem.
Also i restored the phone to stock ( including a bootloader relock, etc...)
Anyone else have this issue? How can i fix it permanently?
Thank you
Update:
nonoperez said:
First of all thanks for this great rom. Since the begining of the year, with the new radio my wi-fi reception is very weak, if I'm farer than 4 o 5 metres from the router my wi-fi disconect. I've tried everything, different roms, kernels, clean installs from 44s strock without luck. It works fine with 4.4. My security protocol is WPA2-Personal.
Now I've done a clean install from stock 44s to today release following the instruction, everything is great except wi-fi.
Anyone having this issue? Thanks in advance.
Click to expand...
Click to collapse
I have the same problem as you. the only solution i found is to use 5GHz band.
On blisspop builds (cm12 based roms also) older than 01/01/2015 i was able to fix that problem by using this tool: https://play.google.com/store/apps/details?id=com.brilliapps.wifiandmorefixer&hl=es
but on the newer builds it does not work. i think it may be some firmware related thing or something cm12 changed.
I have a thread open for it here: http://forum.xda-developers.com/oneplus-one/help/wifi-extremely-slow-kernel-flash-t2978780
And please, could some experienced dev tell us whats going on?

Solved:
The issue seems to be solved for now.
What i did was resetting the phone to color OS stock Rom and then flashed back my actual lollipop ROM.
Enviado desde mi A0001 mediante Tapatalk

Thank you, this worked for me. I was only getting 1mb download speeds. Ran the app and now my one plus is getting 49mb download speeds. Now my one plus is perfect. Really really thank you.
Sent from my A0001 using XDA Free mobile app

tonybuzz32000 said:
Thank you, this worked for me. I was only getting 1mb download speeds. Ran the app and now my one plus is getting 49mb download speeds. Now my one plus is perfect. Really really thank you.
Sent from my A0001 using XDA Free mobile app
Click to expand...
Click to collapse
you are welcome..
Indeed its really strange.
Anyone knows why is this happening after every kernel change?

Update:
Originally Posted by nonoperez
First of all thanks for this great rom. Since the begining of the year, with the new radio my wi-fi reception is very weak, if I'm farer than 4 o 5 metres from the router my wi-fi disconect. I've tried everything, different roms, kernels, clean installs from 44s strock without luck. It works fine with 4.4. My security protocol is WPA2-Personal.
Now I've done a clean install from stock 44s to today release following the instruction, everything is great except wi-fi.
Anyone having this issue? Thanks in advance.
Click to expand...
Click to collapse
I have the same problem as you. the only solution i found is to use 5GHz band.
On blisspop builds (cm12 based roms also) older than 01/01/2015 i was able to fix that problem by using this tool: https://play.google.com/store/apps/d...orefixer&hl=es
but on the newer builds it does not work. i think it may be some firmware related thing or something cm12 changed.
I have a thread open for it here: http://forum.xda-developers.com/onep...flash-t2978780
And please, could some experienced dev tell us whats going on?

Same problem here but with temasek everything work fine

bihariel said:
Hi
I have a very annoying issue regarding WiFi. After flashing any custom kernel (Ak, furnace...), my wifi speed turns very very slow, it drops from 40 mbs to 2 mbs.
And the only way to fix it is with this app: https://play.google.com/store/apps/details?id=com.brilliapps.wifiandmorefixer&hl=es
As i said this happens after a kernel change. I changed thing on my router, like channel, security protocols, qos but no way, it´s not a router problem.
Also i restored the phone to stock ( including a bootloader relock, etc...)
Anyone else have this issue? How can i fix it permanently?
Thank you
Click to expand...
Click to collapse
WOW ! INCREDIBLE !! I even went through the Technical Support, they replaced my device and still had the issue. I used this application and it works !! Went from 1-2mbps speedest to my full connection : 28 MBPS ! Using CM12.0S latest official CM ROM as today

Oneplus One Constant Wifi Drops in Any ROM

Hello fellas. My OPO randomly drops from wifi in any ROM. I cant connect the internet or load anything until i close and re-open wifi. Currently i am on TugaPower N17(7.1.1) but before that i was using RR 5.8.0(7.1.1) and same thing was happening also. Is there any solution,advice for this? I think it is a modem issue. Thank you.
UPDATE: here is the list what have i done to solve this problem
use static ip-not work
forgot network and reconnect-not work
clean flash- not work
flash another rom- not work
go back full stock(cm11s and then cm13s) via fastbot- not work
flash different modem(c7)-not work
problem status- still exists and it's not about my router. happens another networks too. really i am open to suggests.
Update: i've been testing for 3 days and i can say problem is mostly gone. I went cm13s stock and after flashed tugapower via twrp 3.0.2.0 and i dont have root. With this configuration wifi problem is usually happens to me only once in a day. It s been 3days like that.

zaoms said:
Hello fellas. My OPO randomly drops from wifi in any ROM. I cant connect the internet or load anything until i close and re-open wifi. Currently i am on TugaPower N17(7.1.1) but before that i was using RR 5.8.0(7.1.1) and same thing was happening also. Is there any solution,advice for this? I think it is a modem issue. Thank you.
Click to expand...
Click to collapse
try using a custom kernel.

Mr.Ak said:
try using a custom kernel.
Click to expand...
Click to collapse
What can you recommend for battery friendly and nougat(tugapower) supportive kernel?

zaoms said:
Hello fellas. My OPO randomly drops from wifi in any ROM. I cant connect the internet or load anything until i close and re-open wifi. Currently i am on TugaPower N17(7.1.1) but before that i was using RR 5.8.0(7.1.1) and same thing was happening also. Is there any solution,advice for this? I think it is a modem issue. Thank you.
Click to expand...
Click to collapse
I've this strange issues of mobile data not connecting automatically. Had to restart device to get it working again.. switching to Airplane mode doesn't work.

zaoms said:
What can you recommend for battery friendly and nougat(tugapower) supportive kernel?
Click to expand...
Click to collapse
lightning kernel 3.10

Mr.Ak said:
lightning kernel 3.10
Click to expand...
Click to collapse
i'll give it a try thank you.

krishna442 said:
I've this strange issues of mobile data not connecting automatically. Had to restart device to get it working again.. switching to Airplane mode doesn't work.
Click to expand...
Click to collapse
Is it just with jio 4g or other sims too?

krishna442 said:
I've this strange issues of mobile data not connecting automatically. Had to restart device to get it working again.. switching to Airplane mode doesn't work.
Click to expand...
Click to collapse
Yeah same here. I assume it a bug of Nougat. It has never happened when I'm on 5.x/6.0.
It only happens after the device lost data connection then regain data connection. If you turn on airplane mode before entering an area without data connection then turn off airplane mode after going out of it the data connection will still work.
I haven't reported it to Lineage OS Devs yet as I cannot confirm whether it's a system issue or firmware capability issue.
Sent from my OnePlus One using XDA Labs
---------- Post added at 10:50 AM ---------- Previous post was at 10:49 AM ----------
Mr.Ak said:
Is it just with jio 4g or other sims too?
Click to expand...
Click to collapse
I assume it a common problem.
Sent from my OnePlus One using XDA Labs

jimmy19990 said:
Yeah same here. I assume it a bug of Nougat. It has never happened when I'm on 5.x/6.0.
It only happens after the device lost data connection then regain data connection. If you turn on airplane mode before entering an area without data connection then turn off airplane mode after going out of it the data connection will still work.
I haven't reported it to Lineage OS Devs yet as I cannot confirm whether it's a system issue or firmware capability issue.
Sent from my OnePlus One using XDA Labs
---------- Post added at 10:50 AM ---------- Previous post was at 10:49 AM ----------
I assume it a common problem.
Sent from my OnePlus One using XDA Labs
Click to expand...
Click to collapse
Nope,never faced it and it's strictly not related to Nougat at all.
Maybe its just your carrier issue.

Mr.Ak said:
Nope,never faced it and it's strictly not related to Nougat at all.
Maybe its just your carrier issue.
Click to expand...
Click to collapse
I have switched my carrier because of this. Still have the issue.

krishna442 said:
I have switched my carrier because of this. Still have the issue.
Click to expand...
Click to collapse
Try it on Cos 13.1.x

Update: flashing custom kernel is no working. Still experiencing wifi drops.

Mr.Ak said:
Try it on Cos 13.1.x
Click to expand...
Click to collapse
Tried COS 13, had no issues. Not just that any Marshmallow ROM was fine. But when it comes to Nougat, I've this issue. Anyway should update to 7.1.2 and check if Google fixed it. As changelog mentioned some carrier fixes.

It might be hardware related... Does your back (battery) cover have any damage on it?
This phone has antennas located on its back cover. If yours has any damage in the place where the wifi antenna is located - that could be what's causing your drops.
I have started to have similar issues, but with the 4G LTE signal. I forced the phone to use 2G (EDGE) signal - and no more dropped calls or loss of signal.
It's sad that I can't find a back cover for it anywhere. If anyone knows where to get one - please let me know.

zaoms said:
Update: flashing custom kernel is no working. Still experiencing wifi drops.
Click to expand...
Click to collapse
Try switching back to cm11s.
---------- Post added at 09:47 AM ---------- Previous post was at 09:46 AM ----------
kzrussian said:
It might be hardware related... Does your back (battery) cover have any damage on it?
This phone has antennas located on its back cover. If yours has any damage in the place where the wifi antenna is located - that could be what's causing your drops.
I have started to have similar issues, but with the 4G LTE signal. I forced the phone to use 2G (EDGE) signal - and no more dropped calls or loss of signal.
It's sad that I can't find a back cover for it anywhere. If anyone knows where to get one - please let me know.
Click to expand...
Click to collapse
They've one of those on oneplus store I think.
---------- Post added at 09:48 AM ---------- Previous post was at 09:47 AM ----------
krishna442 said:
Tried COS 13, had no issues. Not just that any Marshmallow ROM was fine. But when it comes to Nougat, I've this issue. Anyway should update to 7.1.2 and check if Google fixed it. As changelog mentioned some carrier fixes.
Click to expand...
Click to collapse
Hope!

Mr.Ak said:
Try switching back to cm11s.
Even if that helps, i wouldnt use cm11s if i am correct it is kitkat. And why would it be android version related problem?
Click to expand...
Click to collapse

I recently encountered this problem after switching to RR 7.1.1. After flashing the latest c7 modem, the problem seems to fade away, at least this past 3 days. Hope that helps.

chaos193 said:
I recently encountered this problem after switching to RR 7.1.1. After flashing the latest c7 modem, the problem seems to fade away, at least this past 3 days. Hope that helps.
Click to expand...
Click to collapse
Same wifi problem? So after you flashed the modem problem is gone? Can you provide me link please?

kzrussian said:
It might be hardware related... Does your back (battery) cover have any damage on it?
This phone has antennas located on its back cover. If yours has any damage in the place where the wifi antenna is located - that could be what's causing your drops.
I have started to have similar issues, but with the 4G LTE signal. I forced the phone to use 2G (EDGE) signal - and no more dropped calls or loss of signal.
It's sad that I can't find a back cover for it anywhere. If anyone knows where to get one - please let me know.
Click to expand...
Click to collapse
No i dont think so. Because there is no damage anyway near my phone.

zaoms said:
Same wifi problem? So after you flashed the modem problem is gone? Can you provide me link please?
Click to expand...
Click to collapse
Sorry I would love to provide the link but I'm still not familiar xda labs app lol but u can find the thread under the general section.