Develop Bugs

True cause of "signal" issues

Has anyone read this article? Very informative.
http://www.anandtech.com/show/5254/investigating-the-galaxy-nexus-lte-signal-issue
Sent from my Galaxy Nexus using XDA App

interesting read.
For a long time people have blamed their handsets for problems when the truth is there are always a lot of network issues out there at any given time.
Simply blaming your handset and assuming the network is 'great' because it has full bars or a good db is not the way to go.
Bars or db ultimately mean nothing, they do not mean you will get good speeds or in some cases to be able to make a call, in my experience its rare that the handset is to blame

True.
I had the RAZR before my phone. I would bet that the RAZR wasn't showing the correct signal strength and this is what a lot of people are comparing.
Sent from my Galaxy Nexus using XDA App

aye it would be interesting if someone ran some speed tests on the two devices side by side to what what the speeds v coverage were like

edit

jimdurt said:
They still have some issues to work on. My OG Droid gave me a better signal at my house on 3g. At least measuring the db strength. I dont have 4g here so the measurement in db strength should be sufficient to accurately see which phone has better reception.
Give Google time. They have the right hardware. Just need to get the software tweaked a bit more.
My wifes DroidX consistantly shows -93dBm with 3 bars of 3g service, while my GNex bounces a little more between -120dBm(most of the time) to -93dBm(rarely)
Even with no bars and @-120dBm, i get 600kbps download. Thankfully i have 18mbps download service through ATT Uverse wifi.
I do have to mention, my service improved ALOT from 4.0.1 to 4.0.2 update.
Click to expand...
Click to collapse
At -120 on 3g your lucky to anysort of dl

My 3g/4g signal has never been better. This phone is twice as good as my incredible.
WiFi signal strength does seem to be a little less strong but nothing horrible. Now I wish they would figure out why the OS won't go to sleep.

Well, Verizon resolved all my Nexus, CDMA, and LTE issues for me in one fell swoop. They called me yesterday and told me that they couldn't provide me service at my house and recommended I switch to a different carrier.
I was with them for less than three days. Brought my Galaxy Nexus and wife's temp phone back to the store, then went to the Apple Store to get my wife an iPhone 4S on AT&T with the plan to stop at an AT&T store to get myself a Skyrocket. While standing there playing with the 4S waiting for a sales associate, I got the warm fuzzies from back when I used the iPhone and decided to get one for myself as well.
It was a fun year with Android, but looking back at how I spent yesterday debating if I was going to keep the GN with all its issues, I think I made the right call for me.
I also forgot how much better GSM is than CDMA. I have full bars in my office, whereas on Sprint and Verizon the phones were struggling to hold onto a 3G connection. Amazing difference.
Anyway, sorry to hijack the thread for a moment. I truly hope that this is an issue that can be fixed with software; it seems like poor reception has become a hallmark of Samsung phones and I haven't seen a software update yet that makes a notable difference. We'll see what Sammy and Verizon come up with.

i can understand the signal strength display not being accurate but explain this...
for one, the signal strength on this Nexus is always 1/2(or more) then what i had on my Thunderbolt or Rezound at any given time/place.... which apparently is explained above.
what isntvexplained is this... my Thunderbolt was able to download fast, but not nearly as fast as my Rezound. on the R, i was able to download 1GB in roughly 5 minutes. ive tried downloading the same file(s) from same location various times(test) on this Nexus and it always takes 30 - 40 minutes.
so if the signal strength isnt being reported accurately i can accept that.... but what about the significant difference in data speed?
i also want to note that on my Reound, whenever i played a track in Google Music it started up right away and could jump/skip forward in a track without delay...
now on this Nexus, theres always a delay before the track starts & when you jump/skip to. buffering b.s.

Your Rezound probably already had the music cached.
Sent from my Galaxy Nexus using XDA App

You guys also have to keep in mind that the LTE network slows down the more people that use it. When it was first intro a year ago, it was STUPID fast. Like 50mb DOWN. I remember my Droid Charge hitting low 40's in May. Now that there is a plethora of phones that have LTE and a lot of people using it, the network will be slowed. It still beats the hell out of any other network.

I’m glad somebody posted this.
I did a little experiment in my office this morning with three Verizon LTE phones:
1) Samsung Charge
2) HTC T-Bolt
3) Samsung Galaxy Nexus
With all three phones laying side by side, I opened up the same “Network Signal” app. All three phones we ranging in the -85 to -100 dB strength. There was no phone that clearly had a better or worse signal.
However, the Samsung Charge was showing 4 out of 5 “bars”, the T-bolt had 3 of 5 while the Nexus has a whopping 1 out of 5 bars. Amusing since they we all reading between -95 and -90 dB at that moment.
One thing I noticed different though, is that the Nexus requires at least -85dB before it will connect to LTE. Anything less, it switches to CDMA. I can’t speak for the T-bolt, but I could have sworn I saw the Charge at -95 / -100 dB and still reporting LTE Net. Type.
So, food for thought. Hopefully this “update” that Verizon is working on isn’t anything more than a recalibration of the “bars” indicator.
-Gp

Grannypotts said:
I’m glad somebody posted this.
I did a little experiment in my office this morning with three Verizon LTE phones:
1) Samsung Charge
2) HTC T-Bolt
3) Samsung Galaxy Nexus
With all three phones laying side by side, I opened up the same “Network Signal” app. All three phones we ranging in the -85 to -100 dB strength. There was no phone that clearly had a better or worse signal.
However, the Samsung Charge was showing 4 out of 5 “bars”, the T-bolt had 3 of 5 while the Nexus has a whopping 1 out of 5 bars. Amusing since they we all reading between -95 and -90 dB at that moment.
One thing I noticed different though, is that the Nexus requires at least -85dB before it will connect to LTE. Anything less, it switches to CDMA. I can’t speak for the T-bolt, but I could have sworn I saw the Charge at -95 / -100 dB and still reporting LTE Net. Type.
So, food for thought. Hopefully this “update” that Verizon is working on isn’t anything more than a recalibration of the “bars” indicator.
-Gp
Click to expand...
Click to collapse
There needs to be some kind of way to trick the OS into thinking it actually has the real signal so it will stop switching between 3G and 4G.

One thing I noticed different though, is that the Nexus requires at least -85dB before it will connect to LTE. Anything less, it switches to CDMA.
Click to expand...
Click to collapse
I have -86dB with 3 4G bars as I write this. I know that's not much of a difference from the -85dB, but I thought I would just mention it. Also, I've had -93dB with 4 4G bars (no picture of that though).

Syn Ack said:
There needs to be some kind of way to trick the OS into thinking it actually has the real signal so it will stop switching between 3G and 4G.
Click to expand...
Click to collapse
My 30,000 foot uneducated view is simply that the calibrations for the Nexus require a stronger signal to both acquire and then maintain an LTE data connection. These calibrations probably could be tweaked, but at what cost? I suppose (assuming my theory is correct) the decision came down to a flaky 4G or a solid 3G... and Verizon chose the stronger connection over the faster one. Do you blame them?
However, when I do get a solid 4G connection... the speeds are stupid fast.
On my lunch break today:
30.6M down
15.7 up

Verizon Galaxy Nexus Reception and Call quality

Hi,
I am looking to buy Samsung Galaxy Nexus and upgrade my Verizon contract. I didn't see good reviews for this phone. I heard lot of complaints about poor signal reception, call quality and battery life (reviews like PCMAG and others). I am not too worried about the camera but if the signal and call dropping is real problem, then I don't think it's worth considering this phone.
Anyone experienced any issues? If so, is there a fix?
Please help me making a decision.
Thanks,
Kala

i havent had any issues with call dropping or anything like that
signal in my area is very very strong (full LTE coverage, full bars) so i cant comment on that part

I get full bars of 4G where I live, and 30mb/s, but then again I live in Manhattan.
Sent from my Galaxy Nexus using xda premium

Not sure where you're looking at reviews, but Verizon, Amazon, Best Buy, and WireFly all average ratings of 4+ out of 5.
FWIW, I live in OKC and came from an LG Revolution that always had full strength. My Gnex seams to normally have 2/3 out of 4 bars, but I've never lost signal and get the same speeds I did on the Revo.

I've never had a dropped call on this phone. I live in Tucson and I get 2-3 bars of 4g usually at around 20mb/s.
Sent from my Galaxy Nexus using Tapatalk

The thing that messes measurements up for people, and has unjustly lead to a poor reputation, is:
1) Non-4.0 phones never report LTE signal strength. They will always show CDMA signal strength. Since the LTE network is a lot patchier than it should be given the low frequency it operates on, people assume the 10db difference is due to phones. It is not (google AnandTech Galaxy Nexus if you want to see an exhaustive test). Switching the phone to CDMA-only will put it on-par with other devices.
2) The phone uses considerable hysteresis (averaging the signal over a period of time) when calculating its signal strength. You literally have to two phones next to each other and wait for 10 seconds for the GN to accrue enough data to give you an accurate reading. Most phones will give you the last reported strength, so you'll see the dbm reading change every half second based on slight changes in angle and atmospheric conditions.
The Nexus is at least as good as the OG Motorola Droid (the only phone I've compared it to side-by-side), with a variance of +/-3 dbm, which is probably within the margin of error for these things. And at least in my experience, it will NOT drop a call. I've held calls in areas that had almost no signal (zero bars, -120dbm reading), and while the call got choppy when I ducked under some steel structures, it didn't disconnect. Having used AT&T, T-Mobile and US Cellular recently, I don't know if it's phone or network, but it's impressive.

Just make sure you close apps with ads on them through multi-tasking button (swipe them away), turn GPS off, turn 4G off and battery will last you an entire day with texts, calls, web serving and playing apps. No dropped call or signal issues, camera doesnt focus that well even after touching the auto focus. I would buy this phone again in a heartbeat.

I had two of these. The first wouldn't charge. It also kept loosing the 4G signal. This meant dropped calls and messages not being sent. I picked up a "New" replacement and the phone charged fine. The dropped signal issue persisted with the new device. BTW, I'm in Albuquerque NM.
I tried several radios, but to no avail. The call quality isnt very good either. I really wanted to keep the phone, but have no use for a device that will only work flawlessly on 3G. I was even willing to sacrifice call quality because I don't talk very much on my phone.
Google the Nexus and connection issues. You'll get a grip of links to read about signal loss. The problem seems to be area specific. You may have no problems. I now have the Galaxy Note. Works well, but ATT is slower than VZW in my area (No LTE). The call quality is the best I've ever experienced. Now waiting for ICS.
Steve

A far as call quality goes, on the Verizon GNex, it's really awful. I often find myself asking people to repeat themselves a lot more than I should. My old Samsung Solstice (feature phone) had much better call quality but then again that was on AT&T. Also until it's fixed you have to deal with people on the other end of the conversation occasionally not being able to hear you, its happened to me twice now.
Sent from my Galaxy Nexus using Tapatalk

You are insenuating it is the network that affects your call quality.
It is not. I don't think anyone will argue that a feature phone is better as a phone, than a smartphone is, as a phone. Call quality is not the reason you buy a smartphone.

I have had nothing but problems w the lte gnex. In side by side comparison between the gnex, Droid 4 and the stratosphere the gnex will say -120 dbm while the others will b in the -75 to -85 range. On top of that the othe to phones hold on to 4g much better. In places where the nexus has -120 dbm 3g signal pulling 500kbs the other 2 phones have nearly full 4g bars pulling 25mbs. On top of that the nexus can take up to 10mins to switch from 4g to 3g and vice versa while the others take 30 secs max. The gnex is the best phone I've had but after 2 replacements and trying every radio combo available I just cant deal with this BS any more

I have similar experience. While I can receive a signal about 80% of the time with the 4G network, while I am on that network, my call voice quality is horrible. What I hear is fine, what other people hear from my voice is unacceptable. I have been on Verizon tech support, many days and hours trying to get this resolved.
From what I have read above, I have to agree with everyone that is trying to say that this is not a network issue. I agree. it is the phone, plain and simple. I used the Galaxy S II, and that is possibly the best phone I have ever owned. That was on the Sprint network. I had to switch to Verizon because where I moved, I had no Sprint signal. When I switched to Verizon, that phone was not available. I chose the Nexus. I should have waited for the S3.
I don't know what to do at this point. 4 months of phone replacement, SIM card replacement, PRL updates, Phone OS updates, etc. Verizon is calling me back again tomorrow in the continuing saga of call quality diagnostics...
I will try to keep everyone up to date, if you are interested.

No problems here. After the 4.0.4 update the random reboots stopped. Calls have always been clear, and even clearer after the update. Recently upgraded my wife's phone to a GNex and same deal - no problems. Were in and out of 4g in the Puget Sound area and switching is not an issue. Happens fast and for the most part flawless. Only on a few rare occasions does the phone seem confused and stop getting a data connection for a few minutes.
Sent from my Xoom using xda premium

bad radio?
I have had issues with outbound call quality. The person on the other end says I sound like Charlie Brown's teacher, Wawahwa wa wawwa. First time it happened I went to Verizon and they swapped out the SIM. Good to go for a couple weeks then it started again. Back to VZW and they sent a replacement phone which i transferred the second SIM to. Great for a few weeks and back to VZW for a THIRD SIM. This morning I got the OTA 4.2.2 and Im back in class with Charlie. Im wondering if its the radio at this point...ideas?

the issue is the radio.
I 100% hated this phone.
I had it for almost 2 years and I've been threw 3 of them, all had the worst call quality Ive ever seen in a phone. to the point it couldnt even make a phone call. random screeching sounds, dropped calls, I would hear the person but they wouldnt hear me. I had to take it back for the USB plug on it breaking, had a REAL bad screen once where it would burn in after being on for not even 10 secs. Nothing but problems
I have real strong signal strength in my area so having on these issues is un called for and NOT looking good on verizon.
I hated this phone so much I ended up buying a GS3 on ebay and never looked back
I do NOT recommend this phone to anybody.

[Q] How is 4.0.4 Signal on CDMA Nexus?

Hello,
I am looking to get feedback from users on Verizon's CDMA nexus running 4.0.4. I am wondering if the signal quality has been improved? Obviously signal is important to me, and I live in an area that would have signal issues if I don't stay in the beaten path! I like the idea of a pure nexus device; however, it is not worth it if I can't make or receive phone calls.
Thank you for any input!

Verizon In New England Area
I've been running the unofficial 4.0.4 radio for month now in New England. For the most part I get great 4g and a decent 3g coverage when 4g drops. At home it will usually stay in 4g. Sometime it will drop to 3g when it's in my pocket or I'm in the middle of the house. I use it a lot for 4g hotspot seeing I'm on the unlimited plan. At work because it's a huge medal building, it will drop a lot more. We even have cell towers for Verizon on the roof. But I believe at that point I'm too close. With this phone I've noticed that it very rarely drops down lower than 3g giving me bad data connection. This is only my second 4g phone, having the Lg Revolution before. I'm trying to revive the revolution for my wife so she can use the 4g hotspot too. But now I've just flashed the 4.0.4 official radio and I'm going to see how it does. I'll let you know.

I get 1 bar on this new VZW GN, where my CDMA iPhone 4S gets 3. Since this VZW GN came with 4.0.4, I'm not sure what it used to be like.
HTH

I would say get a Motorola RAZR if signal strength is important to you...I live in Jersey and commute to New York, and I've had this phone since launch on VZW...signal strength is not it's forte and has not improved one iota...I've tried every radio that has leaked out, and a bevy of custom roms to boot...no improvement...I'm extremely bummed...
Sent from my Galaxy Nexus using Tapatalk 2

My decision
Well...I wanted to post what I ended up deciding and if I am happy with it or not after a few weeks.
I went with the Verizon Galaxy Nexus.
My previous setup was US Cellular on a Motorola Electrify!
As expected, the signal quality was less than the Electrify; however, most of the signal issues are while I am driving. Where I used to drop out once; I now drop out twice on the same stretch of road. This is only for about a minute though.
My job has 7 different locations with one out in the middle of no where. I have service at all sites which was the biggest decision factor. I do not regret the decision I made 3 weeks later.
I was a bit concerned about the speaker volume, but volume+ fixed that.
The phone quality is great IMO. I have found nothing lacking on the phone except the signal. I was a bit iffy on the camera, but It is better than my Electrify 8mp camera. Plus ICS.... enough said on that.

Cellular strength and throughput

We know how much you like to stream, ahem, "videos", and so cellular data is mega-important. Rate this thread to express how you think the Samsung Galaxy S8+'s LTE performs. A higher rating indicates that it's fantastic: throughput is excellent and signal strength is top-notch.
Then, drop a comment if you have anything to add.

I get a low 4g signal at work whereas on my s7 edge I didn't get anything

Mine is a lot better than any phone I've had before. Usually at home on all my other phones I have 1-2 bars and on the S8+ I have at least 4 bars.

Bars are no indication of true signal strength. My S8+ doesn't get nearly as strong of a signal as my Pixel XL. I drop signal a lot more often now. I was rather disappointed with the performance of the cell radio actually.

For me, the signal is about the same at home. But at work, the S8+ performs much better than the Note5 that I had... Must be an extra band or something. The Note5 would hang on to an unusable LTE signal or drop to 3G/1x inside my job. The S8+ stays on on LTE with a usable signal.
Sent from my SM-G955U using Tapatalk

It's worst Then S8 as I used that before shifting to S8 plus. But download speed is great.

My S7 was better. The S7 ised a new duel antenna tech, I am not sure the S8 used it or not.

My AT&T Note 4 and my new S8+ get about the same signal, which is really disappointing

I generally see around 5-8dbm better then I did with my pixel xl at home..notice the s8+ does drop signal little easier tho then my pixel in fringe areas

Tested right outside my house. Never had these speeds on my Note 5.

Comming from a S6, the signals and speeds are far better, also my s6 was missing a few bands so never ever got speeds like this on my Jio 4G Network in India

At work on LTE Im getting 31 Mbps down and 6 Mbps up. Not bad! Faster than our company wifi!

webtech9 said:
At work on LTE Im getting 31 Mbps down and 6 Mbps up. Not bad! Faster than our company wifi!
Click to expand...
Click to collapse
I used to get 54Mbps which WAS faster than the company wifi. Then we bumped up to 500Mb.

Poor Reception in Canada on Bell Mobility
I just got an unlocked S8+ that was apparently originally from Sprint (because that is where the home page goes in Samsung Internet).
I do not get very good reception on it – even in urban/suburban areas. Sometimes, when I am inside a building, it disappears altogether. I often get 1 or 2 bars on the reception indicator. If I check the “Sim Card Status” screen under settings I get -105 dBm 3 asu. I don’t really know what those numbers mean.
Is there anything I can do to improve reception? Should I be calling Bell and maybe they need to know what kind of phone I have? Should I expect an S8+ purchased directly from Bell (they also carry this phone) to have better reception? Or is the reception of “105 dBm 3 asu” fine and it’s just the indicator showing low levels?
As much as I like this phone I cannot be missing calls randomly. I have a business to run.
Thanks.
The Fish

thefish123 said:
I just got an unlocked S8+ that was apparently originally from Sprint (because that is where the home page goes in Samsung Internet).
I do not get very good reception on it – even in urban/suburban areas. Sometimes, when I am inside a building, it disappears altogether. I often get 1 or 2 bars on the reception indicator. If I check the “Sim Card Status” screen under settings I get -105 dBm 3 asu. I don’t really know what those numbers mean.
Is there anything I can do to improve reception? Should I be calling Bell and maybe they need to know what kind of phone I have? Should I expect an S8+ purchased directly from Bell (they also carry this phone) to have better reception? Or is the reception of “105 dBm 3 asu” fine and it’s just the indicator showing low levels?
As much as I like this phone I cannot be missing calls randomly. I have a business to run.
Thanks.
The Fish
Click to expand...
Click to collapse
Hey fish you want it down, the dBm i mean. Here's a quote "-50 dBm is great signal or full bars. -120 dBm is very poor signal or a dead zone." you at 105 dBm is garbage, no wonder your missing calls.. Since you are experiencing network issues, you could get a replacement, but i don’t think it will make much difference. as it's all same hardware. Why not get a Google Pixel XL i heard they got awesome reception! Or if you’re at home a lot, purchase an lte repeater booster ? Problem Solved!

Drop in signal & Block sign
Im living in UAE - and my service provider is etisalat, and my 4G signal is dropping and sometimes i get block sign, i tried my sim in different device it working.
i have started a thread on the subject if anyone could help me please.
https://forum.xda-developers.com/ga...block-sign-t3851575/post77823171#post77823171

N1NJATH3ORY said:
Hey fish you want it down, the dBm i mean. Here's a quote "-50 dBm is great signal or full bars. -120 dBm is very poor signal or a dead zone." you at 105 dBm is garbage, no wonder your missing calls.. Since you are experiencing network issues, you could get a replacement, but i don’t think it will make much difference. as it's all same hardware. Why not get a Google Pixel XL i heard they got awesome reception! Or if you’re at home a lot, purchase an lte repeater booster ? Problem Solved!
Click to expand...
Click to collapse
I went through a whole “carrier switching” routine (details found somewhere on these forums) and after changing the CSC to Canadian I flashed Bell Mobility's firmware. The phone now shows that it’s an SM-G955W which is the Canadian model. And apparently now supports additional LTE bands 29(700) and 30(2300) which were missing from the SM-G955U (I determined this by dialing *#2263#).
I have no idea if it *really* supports these bands or just *says* that it does but my gut tells me that it really does support them. I suspect that the hardware for the SM-G955U and SM-G955W is 100% identical and any differences are controlled through software only.
And I seem to have better reception now. I am getting 4 to 5 bars in most places and under -100 dBm in most places. Plus Wi-Fi calling works now so I have reception in my basement at my house.
The true test will be when we go camping next summer.
The Fish

thefish123 said:
I went through a whole “carrier switching” routine (details found somewhere on these forums) and after changing the CSC to Canadian I flashed Bell Mobility's firmware. The phone now shows that it’s an SM-G955W which is the Canadian model. And apparently now supports additional LTE bands 29(700) and 30(2300) which were missing from the SM-G955U (I determined this by dialing *#2263#).
I have no idea if it *really* supports these bands or just *says* that it does but my gut tells me that it really does support them. I suspect that the hardware for the SM-G955U and SM-G955W is 100% identical and any differences are controlled through software only.
And I seem to have better reception now. I am getting 4 to 5 bars in most places and under -100 dBm in most places. Plus Wi-Fi calling works now so I have reception in my basement at my house.
The true test will be when we go camping next summer.
The Fish
Click to expand...
Click to collapse
Happy days for you i do suffer poor signal in my house:crying: i'll see if i can flash the CSC to fix it, thanks for the update!

s7 does lot better than 8+ in the same room

VZW Cell signal strength Samsung S7E vs Pixel 2 XL

Just curious if anyone is coming from an S7 or S7e on VZW and whether the cell reception is better, worse, or the same. We live in a rural area that has "so-so" cell service and we have found there are areas where we drop calls sometimes while driving (we have S7E's) Just curious if the cell reception is better, worse, or about the same. Thanks in advance!

same exact situation here in rural area and I need verizon just for that fact and I was just on s7 edge. The pixel 2 XL is as good or better at holding the current signal and not switching and dumping phone calls. Seems great so far. I do have one spot where I lose total cell service near me and with the P2XL it still does, apparently just a hole with no service, not the phone's fault. You should be happy switching from that s7 edge to the new pixels. I'm absolutely loving this phone.