Develop Bugs

Bad signal on VZW GNex

Anyone else notice a much worse signal on the GNex than other VZW phones in the same location. I swapped from a GSM Gnex and i gotta say, im not impressed.

mastibeta said:
Anyone else notice a much worse signal on the GNex than other VZW phones in the same location. I swapped from a GSM Gnex and i gotta say, im not impressed.
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From what people have said of Samsung, they have bad CDMA radios in general while Moto has the best.

Ya I keep getting random 4g drops in my house, I usually fluctuate between 2 bars of 4g and 2 bars of 3g...
Sent from my Galaxy Nexus using XDA App

I am. Compared to the Rezound I had for a couple weeks the dBm is -100 to -140 where the Rezound was -80.
Last night it kept dropping to 3G and would not get 4G back unless I rebooted.
Speedtest was about half what it normally was with the Rezound on 4G
This morning the -dBm is over -100 but the speedtest is about to where it was normally so I don't know.
I travel for work so I'm going to give it week and see how to behaves as I move around.
I really like this phone but I need it to be a phone first and if it drops calls or the 4G is this bad it's going to be a deal breaker.
I just did another speed test at -108 dBm and it's over 20MB down. I was getting 4MB down last night and the signal was all ranging all over the place while I was staying in the same spot.

I have to imagine the VZW network was getting pounded pretty hard last night with new adopters and phones being activated. I'd say give it a few days and check back into it

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Bad signal but still getting good speeds....
Sent from my Galaxy Nexus using XDA App

I am experiencing this also coming from a Thunderbolt. Granted the Thunderbolt had flashed radio/Kernal/Rom's. Would that even matter? In this case will an updated radio provide a stronger signal or just increased reliability from being dropped? Maybe both? Idk. Anyone?

These are all in the exact same spot ranging from -100 to -140dBm

Glad I'm not the only one! The Rezound had way better connectivity and reception! Samsung sux in this dept. Ima give it a few days. Off topic here but where's the smart dialing?? I can't believe it didnt make it to ics!! Heh.
Sent from my Galaxy Nexus using Tapatalk

I honestly think the phone is just reading your signal wrong. TBolt had this issue also and a modem fixed it somewhat.

psufan5 said:
I honestly think the phone is just reading your signal wrong. TBolt had this issue also and a modem fixed it somewhat.
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I drop signal at random though.

Would that cause it to drop down to 3G?

I have same signal i used to have on my rezound, i still get almost same speeds around 28 up and 18-20 down here in Minneapolis. rezound used to get 32 down and around 20 up, but i am thinking since verizon network was pounded yesterday so there will be some impact on speeds

Whatever new phone that comes out, you can always count on a bad signal thread.
I haven't noticed a difference in signal, but I do think it has better sound quality than my Droid Incredible.
Edit: I just did a speed test (3g) and it was very choppy and not great. I live across the street from a cell tower, so that is not good.

The Moto RAZR I returned yesterday to get this Samsung had much better reception.
I should have remembered that the Koreans can't engineer a good antenna. I'm very unhappy right now.

tsk138 said:
Would that cause it to drop down to 3G?
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Yeah, ill be sitting with 2 bars of 4g...then randomly goto 2 bars of 3g...cant get 4g back without cycling airplane mode.

shizat63 said:
The Moto RAZR I returned yesterday to get this Samsung had much better reception.
I should have remembered that the Koreans can't engineer a good antenna. I'm very unhappy right now.
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The GSM model holds signal great...had hspa+ all the time.

mastibeta said:
Yeah, ill be sitting with 2 bars of 4g...then randomly goto 2 bars of 3g...cant get 4g back without cycling airplane mode.
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I get that same issue, maybe THIS is why VZW delayed it?
:O

mastibeta said:
The GSM model holds signal great...had hspa+ all the time.
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i beg to differ

Maybe your coverage area? I am in Tampa...in a building, in my office, i get 5-6 megs down and 2-3 up...with my LTE GNex, i cant even hold a 4g signal, and when i do its 5 megs each way. Nothing earth shattering....but on top of it, that drops to 3g and stays there. The GSM, always had a connection.

Am I doing it wrong?

Woke up late today because phone died. Does WiFi really kill the battery this bad or did I get the grey triangle of death? I have signal where the phone was laying. I'm currently rocking AOKP and Frank (Turtle) kernel.
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looks like you totally lost signal and the radio kept trying to find one

Wifi does NOT kill the battery that bad. And the GN in my experience and others too I see has excellent idle life. Something is wrong.

I have WiFi on 24/7 and have no issues. The Verizon phones are meant to have battery issues aren't they (as in ICS not liking them)?

I received this phone through Amazon on Monday. I can recall about 3 different times where I would be using the phone and have great signal and then all of a sudden I would lose internet connection. It would take a minute or so but it would come back. 2 of those occasions happened before I even rooted the phone. Yesterday, it happened when I was on a call. On all occasions I had at least 2 bars if not more when it happened.
Seems to be when the drop happens I also lose voice. Does anyone else have similar problems?

That's due to no cellular reception, not WiFi. The red under, "Mobile Network Signal" represents time where your phone had zero reception.... not to mention that your stats told you that you didn't have signal 93% of the time.

KWKSLVR said:
That's due to no cellular reception, not WiFi. The red under, "Mobile Network Signal" represents time where your phone had zero reception.... not to mention that your stats told you that you didn't have signal 93% of the time.
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This, exactly. Almost the entire time you were on battery the phone was searching for a cell signal for voice and SMS, killing your battery.
Zabalba said:
I received this phone through Amazon on Monday. I can recall about 3 different times where I would be using the phone and have great signal and then all of a sudden I would lose internet connection. It would take a minute or so but it would come back. 2 of those occasions happened before I even rooted the phone. Yesterday, it happened when I was on a call. On all occasions I had at least 2 bars if not more when it happened.
Seems to be when the drop happens I also lose voice. Does anyone else have similar problems?
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I have never had even a remotely similar experience, it seems that if you were in the same spot that entire time and that happened, the handset may be faulty and you will want to exchange it for a replacement.

mutelight said:
This, exactly. Almost the entire time you were on battery the phone was searching for a cell signal for voice and SMS, killing your battery.
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Yep. Keep in mind that when your phone loses signal it will increase the power to the radio in an attempt to find a signal (since that's the primary purpose of a phone, or so I'm told). If you know you're in a spot with poor signal, put it in Airplane Mode to keep it from searching (and thus draining the battery).
As mutelight mentions, if your phone is going from good signal to none without moving, there's something else wrong. Trying different radio firmwares may help, or it could be a hardware issue.

KWKSLVR said:
That's due to no cellular reception, not WiFi. The red under, "Mobile Network Signal" represents time where your phone had zero reception.... not to mention that your stats told you that you didn't have signal 93% of the time.
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What's interesting is I left it on my desk. I get good reception at my desk (get 4G there).

I have the problem that after almost every text message I receive, I lose all voice and data signal, but it comes back within 5-10 seconds later. Very annoying.

spencer88 said:
I have the problem that after almost every text message I receive, I lose all voice and data signal, but it comes back within 5-10 seconds later. Very annoying.
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That is also not normal behavior. Are you running all stock? If so, definitely seek a replacement.

In those situations, put your phone in airplane mode and turn on wifi.
Sent from my Galaxy Nexus using Tapatalk

I just contacted Verizon and Amazon (I bought the phone from them).
Verizon had me pull out the LTE sim and reinsert it. The rep said she did something on her end to refresh my line. I've been around the block to know that means jack **** but we will see.
I spoke with Amazon it was reassuring. If I keep having issues with the signal they will overnight replacement phones. If I keep having an issue with them I can replace them for another phone.
I love this phone so far with the exception of the problem that was stated so far. I already bought all sorts of accessories for the phone. But in the event I have to move on from the GNEX, which phone would you guys recommend?

I like this phone too much to switch to another brand/phone.
I ended up asking Amazon for a replacement phone. Hopefully this new phone comes without issues.

Zabalba said:
I like this phone too much to switch to another brand/phone.
I ended up asking Amazon for a replacement phone. Hopefully this new phone comes without issues.
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Good.
I couldn't come up with a phone I'd rather have than the GNex :-D

Just got the brand new replacements from Amazon. Same exact problem. After speaking to Verizon and Amazon, I'm going to replace the sim. If my problem does not resolve itself, looks like I'm going to AT&T for the Galaxy Note.
Wish me luck!

Zabalba said:
What's interesting is I left it on my desk. I get good reception at my desk (get 4G there).
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it could be that you lost signal and the phone was unable to get it back for some reason even though you were in a good reception area. Some of the radios that i tried had problems going from edge to 3G and would either take too long or not be able to go back to 3g again. i would try flashing 4.0.3 or a different radio.

Conclusion to the story.
I ended up getting the sim cards replaced. Same issue. I was even able to show the rep. Looks like I'm going to end up getting the Galaxy Note.
Thanks to those who replied and read the thread.
Sorry Verizon LTE. It was nice while it lasted (or connected) ;_;

have you tried different roms/kernels ?
try to switch it off of 4g
it definitely seems to be a connection issue

I had this exact problem with my first Gnex. Left it unplugged on the nightstand and woke to a dead phone. Same battery profile: No mobile signal and a steep discharge graph. My wife's Gnex, 6 ft away in the same room, was just fine.
Verizon swapped me a new phone and I haven't seen that problem again. To be fair, I've only repeated the conditions a few times, so it's hardly conclusive.
Sent from my Galaxy Nexus using xda premium

Four Galaxy Nexus devices tested. None are able to obtain a GPS Lock.

I currently own a Galaxy Nexus and love everything about it except it seems that GPS cannot get a lock on my phone.
I thought many it was only my unit, so I tried out 3 of my other friends GN's. No luck.
It seems like the Galaxy Nexus cannot get a GPS lock in Vancouver, Canada. (My only hypothesis so far)
Google Maps can get a location lock (without GPS, but using WIFI and Mobile Network triangulation) to 20 meters.
Relying solely on GPS with Google's Mobile Triangulation off. I get the "Your location is currently unavailable" error.
First image is GPS only. Second image is using google's mobile triangulation. Third image is well what GPS Status shows me.
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Out of the 4 GN's
One is locked, unrooted, and is running stock 4.0.1 on Bell Mobility, UMTS Network
Another is running AOKP 4.0.4 (Franco Kernel) on Fido, UMTS Network
Another is running Liquidsmooth v1.4 (Lean Kernel) on Wind, AWS Network
Mine is running Liquidsmooth v1.4 (Franco Kernel) on Bell Mobility, UMTS Network
I have tried setting the gps.conf file to the right settings, I have attempted to flash different basebands with no luck.
Any ideas? Maybe another Vancouverite can help me out here?
All tested outside, on a semi-cloudy day.
I will post pictures tomorrow when I'm at school as I do not want to give away my approximate home location to 20 meters using wifi.

Rural Iowa, 20 second lock, indoors. BOOM.
Sent via a butterfly wing flap generated program. As its delicate wings flap once, disturbances ripple outward, changing the flow of the eddy currents in the upper atmosphere. This causes momentary pockets of high pressure which act as lenses, deflecting cosmic rays, focusing them to strike the drive platter and flip the desired bit. That's how real programmers do it.

upstandingcitizen said:
Rural Iowa, 20 second lock, indoors. BOOM.
Sent via a butterfly wing flap generated program. As its delicate wings flap once, disturbances ripple outward, changing the flow of the eddy currents in the upper atmosphere. This causes momentary pockets of high pressure which act as lenses, deflecting cosmic rays, focusing them to strike the drive platter and flip the desired bit. That's how real programmers do it.
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Click to collapse
Which baseband are you running if I may ask? I'd like to give it a shot.

team eos 2.1.0, glados 1.34, ugcl1. im in vancouver, bc on wind mobile indoors. takes about 5s to lock.

Well in my case it gets the lock. Takes a lot of time to but eventually it does.

Gets lock in 4 seconds, indoors. (;
Sent from my Galaxy Nexus using Tapatalk 2

chedder23 said:
team eos 2.1.0, glados 1.34, ugcl1. im in vancouver, bc on wind mobile indoors. takes about 5s to lock.
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Thank you for your reply. I will try your config on the weekend.
Although are you SURE you have a GPS lock? Did you try disabling Wifi, and Google Location Services (triangulates mobile data)?

Out of curiosity, why do you want to rely solely on GPS? It is less accurate than being augmented by wifi and uses more battery.

The initial satellite lock with Google's loaction service switched off will take a while.
How long did you wait for the fix? Did you check with a GPS status app? You should see one or two satellites pretty quickly even without location service but the fix can take > 10min the first time.

gokpog said:
The initial satellite lock with Google's loaction service switched off will take a while.
How long did you wait for the fix? Did you check with a GPS status app? You should see one or two satellites pretty quickly even without location service but the fix can take > 10min the first time.
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I tried the GPS Status app. I left the phone on for approximately 5 min before I gave up hope. Are you saying that if I leave GPS Status on for 20 min it should find a few satellites and then it will work smoothly after?

EniGmA1987 said:
Out of curiosity, why do you want to rely solely on GPS? It is less accurate than being augmented by wifi and uses more battery.
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I'm planning some hikes this summer. My other phones had no problem relying on GPS. Or didn't give erratic positions when triangulating mobile networks.
Also, GPS is a feature of the phone, why not have it?

It always takes me a few minutes but it finally locks, that's with location services turned on.

TechActivist said:
I'm planning some hikes this summer. My other phones had no problem relying on GPS. Or didn't give erratic positions when triangulating mobile networks.
Also, GPS is a feature of the phone, why not have it?
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Mine was quite unreliable as a standalone GPS in the trinity wilderness a couple of weeks ago.

bpm2000 said:
Mine was quite unreliable as a standalone GPS in the trinity wilderness a couple of weeks ago.
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Seems like this phone is a hit and miss for many. Either it works, or doesn't.

If you are in the US try what is posted in the OP of THIS thread. It helped me get a fix faster.

mentose457 said:
If you are in the US try what is posted in the OP of THIS thread. It helped me get a fix faster.
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I just attempted this tweak using the optimal settings from Canada and so far. No difference. GPS Test shows 1 satellite in view (25% of the time) and the SNR is approximately -19dB I believe.

You should check out the Note or the SIII, they have GLONASS also. The Note has excellent location lock, not extremely precise but very fast lock and stays locked. I figure the SIII will perform similarly.

eksasol said:
You should check out the Note or the SIII, they have GLONASS also. The Note has excellent location lock, not extremely precise but very fast lock and stays locked. I figure the SIII will perform similarly.
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Click to collapse
Unfortunately, I do not have friends with the Galaxy Note or the S3. (Yet)

My GPS seems to do fine. Apps (including Maps) have no issues getting a pretty quick and accurate location lock. It can be a bit slow in Navigation (possibly on account of me driving down the freeway at 70mph) but it's not the end of the world.

martonikaj said:
My GPS seems to do fine. Apps (including Maps) have no issues getting a pretty quick and accurate location lock. It can be a bit slow in Navigation (possibly on account of me driving down the freeway at 70mph) but it's not the end of the world.
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But this is quite a big issue by the looks of it. 4 different GN's all the same issue?

GPS Issue

I am having problems with my 6506 GPS locking. I have tried three factory resets, and after contacting Sony, two software restores.
Yet I continue to get "searching for GPS" when I try to navigate either in Google Maps or Navigon.
Location services are all on.
Would a new ATT sim work? Any other help appreciated.

Do you have Google apps location access turned on? Settings/Google Account/Location settings.
Sent from my C6506 using xda premium

augie7107 said:
Do you have Google apps location access turned on? Settings/Google Account/Location settings.
Sent from my C6506 using xda premium
Click to expand...
Click to collapse
Yes

Download GPS test apk to check it or *#*#7378423#*#* do GPS location test

Me also - turning into a deal killer for me
I'm having a similar problem. Stock firmware (rooted, not unlocked) and GPS fixes are problematic. This morning in Chicago suburbs (i.e. no tall buildings or obstructions) the first fix took maybe 2 minutes. I then ended GPS Test, waited about a minute, started again. Time to first fix was 48 seconds, which is extremely long for a fix when that warm.
I've also been comparing to the Galaxy S2 (I777), and doing so WITHOUT a sim card meaning it's AGPS ability is very limited, and even so every single time it locks faster and had greater resulting accuracy.
The problem is consistent with the GPSTest program, also google maps (and the resulting accuracy shown). The signal level of each satellite when it does see them is almost entirely orange on the ZL, but generally yellow or green on the SG2 in the same area.
As a quick test I am standing in my office, it's got a corner view south east. I powered up the GS2 which had not been in use for 2 days, and it got a lock in 9 seconds according to GPSTest's time to first fix. No SIM card either.
Then I did the ZL in the exact same spot, and after about 4 minutes I gave up. Screen shots below; notice that 3 additional minutes have passed on the ZL and still no lock, and I started them at the same time.
I've also used the GPSTest to clear and update the AGPS data, it made no apparent difference.
So far, even with the camera's over processing, I love the phone. Everything else I've got straightened out, but this may become a deal killer, as I really do use the GPS.
Is it just me? (Well, and the OP?).
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Edit PS: Just to head off one area -- I am familiar with the NTP pool issues, have tried Faster Fix, but the issue is not that -- the issue is inadequate satellite signal, it's just not receiving enough/well-enough.

is lack of response indicative that the OP and I may have hardware problems and this is not normal for this device?
I called Sony, they had me do a complete restore with PC Companion, which reloaded all the software as best I can tell; I did not root or anything after, and spent 10 minutes in a parking lot without a lock. Later in the morning I tried and got a lock in about a minute, which is still slow, so it still is flakey.
And despite three attempts at calibrating the compass, when using it (and not GPS) it's WAY off, part of the time about 30 degrees, then as you swing around through (real) sourth it jumps drastically.
It's going back today, will see whether they have another to try, but this is a deal killer for me if the GPS doesn't work. I'm hoping the relative silence is a sign that it's not a general problem (a la Captivate of years past) and so will probably try another handset if they have one.

No issues with the GPS or compass on mine (C6502). It takes about few secs (usually <5-10 secs) to lock the position. Screenshot below was taken while testing GPS indoors (locked on in 8 secs).

New Handset
Oh what a difference a new handset made.
Kudo's to Sony Store in Wisconsin (an hour north of Chicago). I called, they had one, drove up and they swapped me out. One of the reps also spent time with my old phone and never could get a lock.
The brand new handset locked in a measured 7 seconds from the system test menu, cold start. THAT's what it is supposed to be like. I just tried indoors at the hotel in an elevator (glass sided though) and about 10 seconds.
So definitely had a bad handset. Definitely a working one has acceptable performance!
Thank you -- being able to explore here kept me from assuming that the model was poor and just returning it. Happy camper again. to the OP JUST GET IT REPLACED!

Linwood.Ferguson said:
Oh what a difference a new handset made.
Kudo's to Sony Store in Wisconsin (an hour north of Chicago). I called, they had one, drove up and they swapped me out. One of the reps also spent time with my old phone and never could get a lock.
The brand new handset locked in a measured 7 seconds from the system test menu, cold start. THAT's what it is supposed to be like. I just tried indoors at the hotel in an elevator (glass sided though) and about 10 seconds.
So definitely had a bad handset. Definitely a working one has acceptable performance!
Thank you -- being able to explore here kept me from assuming that the model was poor and just returning it. Happy camper again. to the OP JUST GET IT REPLACED!
Click to expand...
Click to collapse
Sent it back two days ago. New one should be here this weekend.

Location of Wifi antenna and how to acquire replacement

I did a couple searches on the official search and on google and found nothing so if this is a repost my apologies.
I have a verizon galaxy nexus, that randomly has been giving a real issue with it's wifi. Not sure how it came to be. I flashed a new rom and kernel and latest radios one day and noticed it dipped. I can be on top of the router and only show 2 MAYBE! 3 bars. Once I walk about 20 feet away I have 0-1... so I went ahead and recovered my old rom and settings via nandroid. No difference. I went back and reflashed using twrp, my old radios as well. Still no difference. Now just today after dealing with this for about 2 weeks I went ahead and fastboot flashed my phone back to stock and everything... low and behold... no difference. So I have come to the conclusion it could be hardware related. I opened my phone up and I have been taking guesses as to which antenna is actually the wifi one as I can't seemed to find any identifying marks and all the tear downs I find are for GSM models. But while I was in there, i made sure the pogo points were making contact, I cleaned all the components with electronics cleaner and everything. No difference for worse or better frankly. So replacing the antenna I guess is the only idea I have left to see but I don't wanna buy a whole broken phone for several 100 bucks.
Thanks
Info on my phone:
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I can't help with the location of the antenna, but have you tried other routers? I know some of these phones can have trouble with some. Mine in particular has a very hard time staying connected on the 5ghz band on my home router even when I'm two feet away. After forcing it to the 2ghz band, it worked fine. Might want to try a different router, or even find a free hotspot somwhere, to test on another one before attempting to replace the antenna.
Sent from my Galaxy Nexus using Tapatalk 2

bpyazel said:
I can't help with the location of the antenna, but have you tried other routers? I know some of these phones can have trouble with some. Mine in particular has a very hard time staying connected on the 5ghz band on my home router even when I'm two feet away. After forcing it to the 2ghz band, it worked fine. Might want to try a different router, or even find a free hotspot somwhere, to test on another one before attempting to replace the antenna.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Sadly, it's all routers. My house one if I sit on my bad barely receives signal from the router half way on the other side of the room. Meanwhile my laptop can pick up the signal halfway into my backyard. Worked fine before the symptoms began.
Work routers, we have 2. One is a private network for our printers, I sit approximately 15 feet away from it and have about 2 bars. My other one from the main network does not even appear anymore. It is about 20-30 feet away thru 2 walls. Prior to the issue popping up, I had full bars for the one and about 2-3 for the other.
Changing settings on my home router does nothing sadly.

Mithos der Held said:
Sadly, it's all routers. My house one if I sit on my bad barely receives signal from the router half way on the other side of the room. Meanwhile my laptop can pick up the signal halfway into my backyard. Worked fine before the symptoms began.
Work routers, we have 2. One is a private network for our printers, I sit approximately 15 feet away from it and have about 2 bars. My other one from the main network does not even appear anymore. It is about 20-30 feet away thru 2 walls. Prior to the issue popping up, I had full bars for the one and about 2-3 for the other.
Changing settings on my home router does nothing sadly.
Click to expand...
Click to collapse
and have you used an app like WiFi Analyzer to see what the signal looks like just to make sure that it isn't a cosmetic issue with the signal bars?

tgeery said:
and have you used an app like WiFi Analyzer to see what the signal looks like just to make sure that it isn't a cosmetic issue with the signal bars?
Click to expand...
Click to collapse
the one router it picks up at work is sitting around -80-90 dbm when I am at my desk.
Between -70-80 when I told it up the antenna. The 2nd router remains unviewable.

Mithos der Held said:
the one router it picks up at work is sitting around -80-90 dbm when I am at my desk.
Between -70-80 when I told it up the antenna. The 2nd router remains unviewable.
Click to expand...
Click to collapse
interesting... mine shows -44 sitting across the office from my router; -4 to -8 if I hold it right over the router so yeah, I'd agree that you defintely have something going on.
pardon my lack of re-reading the entire thread but have you reloaded your radios? remember that a Nandroid backup and flashing a ROM and that kind of thing doesn't necessarily update/replace radios.
maybe getting a copy of the appropriate version of radios from here on XDA and then manually flashing those?

Hi. I'm having the exact same issue. Did you solve it? Thanks.