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So I just got my Nexus One a couple of days ago. In most ways it's a great device. The screen is amazing and multitasking with IM and apps like Pandora and Rhapsody is a nice change.
However...none of this is all that great if it doesn't work very well as a phone! I live in Brooklyn, in an area marked on the T-mobile map as "Best 3g coverage". I've found that I get almost full signal with T-Mobile 3g if it's sitting on my desk in it's dock (and speed test at about 2mbit). As soon as I hold the phone in my hand (especially if my hand is on the bottom of the phone), the signal drops away by at least two bars, if not completely - dropping the data connection back to edge. If I walk about 15 feet away from the window and into my apartment, I often lose connection altogether.
If I put my T-mobile sim into my unlocked iPhone I get a steady 2-3 bars with EDGE throughout the entire apartment.
HTC are sending me a replacement Nexus and it should get here today or tomorrow.
My question is, should I expect an improvement with the new unit? How many of you are experiencing problems with the device in terms of 3g and general signal stability? Do you notice significant signal drop offs when holding the phone as opposed to having it docked or on a desk?
It's definitely a bit of a dealbreaker for me, and the problem seems way too widespread to just be a problem with my unit. Just wondering what the general experience is here?
Thanks.
By cupping my hands around the phone I can consistently lose one bar and regain it by letting go. This is while it's sitting flat on the table or by standing it up and holding it at the top with one finger.
You arent the only one having this issue, i am as well as many others.
http://www.engadget.com/2010/02/11/...t-after-update-is-it-a-design-pro/1#c25420883
gkaugustine said:
You arent the only one having this issue, i am as well as many others.
http://www.engadget.com/2010/02/11/...t-after-update-is-it-a-design-pro/1#c25420883
Click to expand...
Click to collapse
yep. same **** happens to me when i hold my phone normally at the bottom.
Yup, even after the recent OTA update, it's been noted (on engadget as well) about how cupping the unit drops the signal strength.
There's hope this is a software patch fix, but it's looking like a hardware limitation.
Also voice your concerns here...
http://www.google.com/support/forum/p/android/thread?tid=0c0fb2a46ad64955&hl=en
The more complaints they get, the more public it gets...the better chance we have of getting the issue fixed.
It's also has been noted over at tmonews...more exposure the better!
http://www.tmonews.com/2010/02/nexus-one-3g-woes-part-315/
I have the same problem with my phone. It'll have 2-3 bars 3G while the phone is on my desk but drop to Edge whenever I use it to make a phone call or browse the internet. I called HTC about it and they're sending me a new phone, I'm hoping it was just a bad batch because not everone is experience this problem.
3G/UMTS/HSDPA flip to EDGE
In an area with maximum T-Mobile 3G coverage (as indicated by their map), I get:
* phone on the desk: 4 bars, HSDPA, -79..-81dBm 16..17 asu
* cradling the bottom of the phone: 3 bars, HSDPA, -97..-93 dBm, 8..10 asu
* cradling the top of the phone: 4 bars, HSDPA, -71dBm 21 asu
The phone is running CyanogenMod 5.0.2, which includes Google's OTA update that purportedly fixed the 3G issue.
It could be an issue with the antenna placement. A similar thing happens on my old GPRS 1G Nokia phone (that I have to use currently, my MT3g was stolen, bleh): when I hold it from the top, it drops from a full 7/7 bars to 1/7 bars, and when I hold it from the bottom, it jumps to 7/7 bars again. My guess is that the Nexus One has the antenna on the bottom, which is where it is most commonly held, so it loses 3G signal easily, leading more people to notice a problem.
mastermind777 said:
My guess is that the Nexus One has the antenna on the bottom, which is where it is most commonly held, so it loses 3G signal easily, leading more people to notice a problem.
Click to expand...
Click to collapse
The Nexus antenna is on the bottom and has been noted as an issue on some other threads.
Doctor. my arm hurts when i do this.....^^^^^<<<<>>>>>
then dont
I hope iphone 4 complainers don't see this thread
iPhone 4 is getting a lot of flack for exactly the same issue right now. the exact same thing with the N1 just isn't reported.
ablation said:
iPhone 4 is getting a lot of flack for exactly the same issue right now. the exact same thing with the N1 just isn't reported.
Click to expand...
Click to collapse
Don't worry since this is an old thread from last February!
ablation said:
iPhone 4 is getting a lot of flack for exactly the same issue right now. the exact same thing with the N1 just isn't reported.
Click to expand...
Click to collapse
This issue was all over the media, when it was news that is.
I am getting the same issue on the Nexus One which I bought yesterday brand new on eBay.. and I switched away from my iPhone 4 (which I still have, just inside the box) because of this.
I just spread my pinky and ring finger apart to expose the Bottom part of the phone right where the word HTC is located. Leaving this part slightly exposed clears up the issue no problem and reduces the signal attenuation caused by the hand.
Hi,
I have my sgs about 2 months and I'm very happy with it. The only problem I have is, that sometimes there are strange displayinterferences.
It looks like there are moving waves from top to down.
Does anybody have this troubles too and has a solution for it?
Or is it an hardware error? The problem is that the error isn't reproducable.
Maybe somebody can help me, please!
Thanks in advance
spyro
I think I have also noticed that once or twice. I believe it can be seen when you have the android drop down menu (notifications etc) open and you start or stop WiFi. It must be some kind of interferance with wifi hardware. Normal wifi operation does not cause it, only the startup of the WiFI which lasts one second or so.
Yeah, i think this could be true. I also see it often, when I open die Notification bar. But I also have the same interferences, when I am working in apps. Maybe also the 3G connection could be the reason? Does anybody else have this problem.
Is this a problem, which I have to life with or could this be an error of the hardware(warranty)?
http://forum.xda-developers.com/showthread.php?t=753402
I have the same problem. Never on wifi tho.
Which firmware are you using?
Hi,
my firmware is I9000AUJF1(A1 branded from Austria). I don't know if the problem in your posted thread is the same. The interferences I mean only exist one or two seconds. There are horizontal dark lines which moves from top to the bottom. After some time everything is OK again. It looks like anything interfers the display(wifi, 3g?).
The problem of warranty is, that I'm not able to show the problem, because it's not reproducable.
Screen flickering under WiFi data transfer
I noticed this problem a couple of days ago.
Whenever there is some data transfer going on over WiFi, wherever I am browsing or some service syncs up the screen starts flickering and I have what I can describe as faint scan lines crossing the screen vertically like there is some sort of interference.
These are mostly noticeable on white and light grey backgrounds.
I have gone trough 2 firmware updates currently being on stock JPK rooted.
I have searched around on google and found on some forum one guy that was saying the cause is an interference between the WiFi module and the screen refresh rate.
Has anybody encountered this problem or these symptoms ?
Is there somebody around more knowledgeable in this issues that can confirm that this is a hardware problem ?
wow! , you might have a defective phone then.
I use WiFi very often, Wireless N at aprox 87 Mbps
that should be high enough to reproduce the problem you experienced, if i had a faulty screen
the description of the scan line reminds me of interference when you are in close proximity with another LCD or CRT screen causing the distortion field
OMG, I get this too. Usually happens on boot or when I'm browsing a data heavy website or using Android market. Are our phone defective? Does anyone else have this problem? I wonder how common it is.
does the scan line comes from bottom up
or goes from top to bottom?
very slowly or fast?
if you are pluged in and charging, also are you in a 120v or 240v?
AllGamer said:
does the scan line comes from bottom up
or goes from top to bottom?
very slowly or fast?
if you are pluged in and charging, also are you in a 120v or 240v?
Click to expand...
Click to collapse
They tend to be random and I'm on battery power atm. Also they're quite fast but don't last very long. They'll start then stop then start etc ..
Hi,
just for your information. I've sent my phone to samsung on friday. Maybe they find the error. I report, if there are new information.
Yep i have the same problem. Can t find the source though....
Sent from my GT-I9000 using Tapatalk
The lines appear from top and travel the screen fast.
Imagine a TV who for a second has problem with reception.
I am on 240 V.
Also the issue is much more noticeable when not plugged in.
If I have the phone plugged in its barely noticeable.
I will try to call the service and ask about this issue. I have a strong feeling that this is a hardware issue. But Besides the screen being defective I also think about the battery. Maybe when in high load (WiFi) it's voltage varies and affects the screen.
It seems if I uncheck Power saving mode in Settings>Display and also uncheck Automatic brightness things improve a bit.
segun_aduba said:
The lines appear from top and travel the screen fast.
Imagine a TV who for a second has problem with reception.
I am on 240 V.
Also the issue is much more noticeable when not plugged in.
If I have the phone plugged in its barely noticeable.
I will try to call the service and ask about this issue. I have a strong feeling that this is a hardware issue. But Besides the screen being defective I also think about the battery. Maybe when in high load (WiFi) it's voltage varies and affects the screen.
Click to expand...
Click to collapse
Another issue to worry about .. God starting to think about selling this phone and getting something else. Stuck in a 2 year contract though
some one already reported this on another topic
it does seems that some version of the phone are prone to WiFi interferance
we still haven't found out what causes it exactly
for example i can not replicate the issue on my phone when using WiFi
found it
http://forum.xda-developers.com/showthread.php?t=793944
Cant reproduce it.
Not that I'm unhappy with it...
If this is a hardware issue Samsung should replace my phone. I am waiting though a little bit before calling the service to make sure that it is a hardware problem.
If I find that it can easily be fixed with a software fix, it's not worth the hassle of trying to replace it.
can anyone in North America confirm this issue?
i got a huntch it might be an Europe only issue related to the high voltage of the electric interferance nearby, like lights, tv, radio, wifi, etc.
hi, been searching the forum on this but with no results:
right now i have the cm9 update 27.04.2012 running with semaphore 1.1.1. kernel.
My modem seems to be activated when it shouldn't. No data connection is running, and yet the phone seems to send signals more often and in a wider extent then i'm used to register with other phones that only check their network status. It tends to keep transmitting, which I can hear in my loudspeakers as a steady sound which can go up to half a minute, as opposed to the regular rhythmic, morse-like interference which ceases after a few seconds, that we all know.
I wonder if anyone can point me to the reason for this, as it uses battery, gets on my nerves, and might even be rooted in some kind of intrusive piece of software.
Maybe someone also knows an app with which I could see what exactly uses the modem, and how?
On a side note: A few weeks ago I had a similar experience, but it didn't seem to be related to my phone, as moving it around didn't change the sound in the speakers. This was the strangest thing, because I only had this phone, and the noise kept going even though I had removed the battery. The only explanation would be another phone somewhere around my room in another appartment, although the next possible spot would be through the wall in the next house, which is the next building, which is highly improbable. Any ideas on what else besides a cellphone let alone an electronic device could have caused this?! i have even been thinking about surveillance measures by the police...
better ask in the cm9 thread ull get better answer
thanks, i'll do that...
Guys,
I spent 2 weeks of holidays (my wife almost left me for that) mostly trying to find out why GPS performance on my P970 is so poor, losing satellites fixes every so often and sometimes no fix at all although 'seeing' satellites. I did not find a 'real' solution, even after tests on both mostly Huexxx 7 and lately boype's 0909, too.
Best results now on boype's 0909 CM7 but with adapted gps.conf and gps_brcm_conf.xml. Nevertheless, the result is still disappointing, far away from satisfying.
However, during all these checks, I found that satellite's receiption is depending on the way I hold the device in my hands, at least on MY device. Whenever I hold a finger on the top left of the chassis (just above the location where the GPS chip is located, see pictures), then receiption improves by 0 up to 14 db (!!!).
Also the number of 'seen' and 'used' birds increases from 6 to 10 easily!!! However, the fix did not become more stable through that.
Pls check on your devices if you can verify the same behaviour.
If so, what could be the reason (i do not put any pressure on the device)? And is there anything that we can do to make this improvement permanent, i.e. put a piece of 'aluminium foil' between the back lid and the device or something similiar?
Let me know your remarks, guys.
No problem at all. Riding on the tram right now. Fix on 12 in few seconds. Sure it's not because of your position? And 6 is enough to fix the position.
@eighty-four
I appreciate your info, and you are surely right it is depending on my position. My question was a different one though: Do you observe the same reaction as soon as you put the finger on top of the device; i.e. increase of signal strength?
BTW You attached an impressive picture, would like to aks you are you still on AOKP beta 1.1 ICS 4.0.4 and how do your files gps.conf and gps_brcm_conf.xml look like? Can you share them?
AOKP 1.1, no any GPS fixes
Hard to say about reaction while on move. But didn't noticed any noticeable changes.
Can't check now - I'm in home.
I've been using Marvel v9 since released, with the GPS "Tweaks" installed too.
I'm getting GPS signal, sometimes really fast, some others i need to wait for a couple of minutes (maximum 3 minutes).
There are certain times though, that it doesnt lock no matter what, just like in your situation. It manages to find many sattelites (7+) with an average decent signal strength but it refuses to get a gps fix location.
I believe it has to do with the temperature of the chip (i couldnt get easy GPS fix at winter) because now that summer passed by and used my GPS a lot, i had no issues... might be the clouds, might be the stars alignment and zodiacs ... i really dont know.
It's not that accurate and fast though for city driving. Some turns are being announced way too late (Sygic Aura) and the error treshold is about 10meters mostly, rarely goes down at 5meters.
I guess it's a chip manufacturing bull**** rather than a "case construction" or antenna problem.
@morx
I just wanted to check if others can verify better receiption when holding finger on top.
I agree it seems a hw or engineering defect, nevertheless I am trying to optimize the settings in order to compaensate at least partially.
Interesting you mention the temperature: In my research I came across a relationship between temperature and gps accuracy. Our (and any other gps chip) uses a oscillator hw module for precision timing. These oscillators' accuracies depend on the temperature and are measuered in PPM. There is also a setting in the gps_brcm_conf.xml that refers to this, it is "FrqPlan". The usual value in CM7 is "FRQ_PLAN_26MHZ_2PPM_26MHZ_300PPB". However, other values do also work, like "FRQ_PLAN_26MHZ_2PPM_26MHZ_100PPB".
You can check details in THIS post.
Would be interesting to determine if different values lead to better results.
I had no clue that chip temperature had a side effect on GPS fix !!
When i was writing my concern about that, i was feeling stupid until i saw your redirection to that post...
hmmm there are many factors which can be put on the table about optimization and troubleshooting.
Later on, i'll give a try keeping the cellphone with both hands, different angles, one handed on top/bottom etc...
Interesting thoughts.
I'm on CM10 nightly and always had blazing fast fixes until yesterday. I activated GPS in my car and after 3 minutes it fixed (in Osmand), after some more minutes the fix got currently lost.
Due to my big custom 3500 mAh battery I couldn't place my phone in the cradle therefore I simply laid it onto my dashboard. Maybe because of this the signals were harder to receive.
I will switch back to the normal battery today and try to test your variant.
Sent from my LG-P970 using xda app-developers app
I've been reading a lot of threads about wifi problems with the device and also about the slightly raised screen on the top right of the device as well. Both these problems seem to be completely unrelated to each other but I've been noticing a connection with both issues on mine.
My wifi's been horrible recently, to a point where I literally have to be within 3 feet of a router for it to connect, and even then I have to point the device to that general area to get a good signal.
I have found a fix though, I can't explain why it works... but when I push the slightly raised screen on the top right down with my thumb... like really hard, my wifi signal jumps to full from any distance. But the moment I let go of that side, wifi signal either disappears again or just drops to something unusable.
Could this be a problem with my wifi antenna?
wasaabi said:
I've been reading a lot of threads about wifi problems with the device and also about the slightly raised screen on the top right of the device as well. Both these problems seem to be completely unrelated to each other but I've been noticing a connection with both issues on mine.
My wifi's been horrible recently, to a point where I literally have to be within 3 feet of a router for it to connect, and even then I have to point the device to that general area to get a good signal.
I have found a fix though, I can't explain why it works... but when I push the slightly raised screen on the top right down with my thumb... like really hard, my wifi signal jumps to full from any distance. But the moment I let go of that side, wifi signal either disappears again or just drops to something unusable.
Could this be a problem with my wifi antenna?
Click to expand...
Click to collapse
There does seem to be a correlation between the two. It also suggest that it is a hardware issue. Good luck in getting it fixed!