yashsingh1/xdaforums huggingface dataset:
[Samsung Epic 4G Touch] ayman86:
any way to check if you are undervolted? i remembering doing it before but cant remember if i returned it to stock values
[Samsung Epic 4G Touch] sec1rxg:
I doubt it, I would imagine restoring back to stock would reset all original Samsung factory settings and values.
[Samsung Epic 4G Touch] lyomi:
Got RMA label from samsung

My phone finds no GPS satelites. It's on stock rom and i never rooted it.

I walked into a Sprint store explaining my gps issue.

The csr idiot didnt know what GPS lock means and asked me to pay 35 dollars to have diagnostics. Of course I didnt want to waste moneys to those idiots so I walked out.

From samsung support website I could get a support number specific to the galaxy series, 1-877-EZ2GALAXY (1-877-392-4252). I called and the rep said I should go to sprint store for this. After arguing ~15 min that i had to pay 35 dollars. Finally the rep asked the serial number and my address etc. and emailed me a UPS shipping label. It is airmail and the rep said the process will take 5-6 business days.

I'm sending the phone on Tuesday and will update if I have any news.

Btw shouldn't we report to engadget or something to get more attention and make them officially recall all the problematic phones? I cant believe that there is no official response from samsung or sprint while hundreds of people are complaining this GPS issue.
[Samsung Epic 4G Touch] nsxla:
I disagree with that conclusion :D When i got this phone I did not root for a week running the latest stock rom and GPS stopped locking (unless i rebooted) after 4 days. Many have never rooted and have issues....at the moment for me its just a nuisance. I am going to soft brick my g/fs phone before taking it to sprint :D - her phone just refuses to lock at all.
[Samsung Epic 4G Touch] Just_s:
The code definitely works and the process definitely improves (for some, myself included) GPS lock. Unfortunately, it is temporary. In fact, the longest it worked for me was just over 3 hours on a road trip. It's essentially the same fix as the GPS Status app fix.

Again, for those who are unwilling to try and return the phone, I advocate using any combination of "fixes" to get things working, even if temporarily.

For me, I will be exchanging both my wife's phone and my own today. My Sprint store was willing to return mine on Thursday, but I was still rooted and custom, so I decided to wait and do both phones at once.

How you ask? I went in and said that I had no GPS lock, ever. They did all the typical hemming and hawing, tried all the reset fixes, etc. Then they tried to get a lock, which of course failed. They then, again typically, tried to go down the, we're indoors, blah, blah, blah route...

I walked over to the demo phones, picked one up, turned on maps, input an address, instant lock. Picked up the other demo, turned on navigation, input an address, intent lock. The manager said no problem, she would exchange it. Then pulled me aside and said it would have to not be rooted (very cool of her.) So I said I'd be back. Easy as that.

Hint, you may want to test the demo phones before you try to prove the point to avoid embarrassment. That's what I did the day before, which is what ultimately convinced me that the first batch of E4GTs somehow ended up with crappy antennas and newer hardware does not have the issue.
[Samsung Epic 4G Touch] nibrwr:
Install Tegrak & reset to default. Or reflash your kernel
[Samsung Epic 4G Touch] Whosdaman:
This was a problem with the Epic too. I think it has something to do with the CDMA devices
[Samsung Epic 4G Touch] nsxla:
So basically there isn't any trouble shooting left to do, if the GPS never locks not even after a reboot, replace your phone. Yep i don't see threads regarding GPS locks on gsm version.
[Samsung Epic 4G Touch] adma84:
Seriously? Cdma has nothing to do with the gps chip. You must have not owned the evo
[Samsung Epic 4G Touch] Whosdaman:
Yes it does when it comes to Samsung. Try the transform, moment, epic, nexus s, or intercept. Then get at me bro
[Samsung Epic 4G Touch] adma84:
And you know that all of sprint is CDMA? You said there was an issue with Cdma and GPS, that's why I commented
[Samsung Epic 4G Touch] Whosdaman:
I also said epic and this is a Samsung CDMA specific issues. Their GSM devices don't have this problem at all. I've been around for a long time and this has been discussed for nearly 2 years now
[Samsung Epic 4G Touch] adma84:
Gotcha, sorry
[Samsung Epic 4G Touch] gsx62391:
What do you need the GPS indoors for?
[Samsung Epic 4G Touch] Whosdaman:
It's okay, but now we are all on the same page.

So I'll just say it's doubtful this will be resolved by simply replacing devices. It is more likely to be software or hardware placement related. Samsung has never truly gotten heir CDMA devices right.

This also holds true for Verizon devices too
[Samsung Epic 4G Touch] sec1rxg:
Your point is well taken, however, switching back to an all stock EG30 resolved all my GPS problems. Wireless Network values, eg30Kernel scriptures or the original Gps.config file what ever one thing or a combo of all , going back to stock did the trick
[Samsung Epic 4G Touch] ayman86:
plenty of times i use gps services indoors. (such as checking in @ google, foursquare, fb, etc)

with that said in the last week, its been failing to lock even outside. it even lost my location during the route. lol. just today couldnt even lock while outside on a clear day
[Samsung Epic 4G Touch] madocs:
Alright, tonight I am going to create a video of what happens when I use GPSCLRX - which is the same thing that I have seen occur on 5 other ET4G user devices. We don't seem to get any GPS lift - and assumed that it isn't working as it does not reboot (hard or soft), just stays on the same screen after MSL entry.
[Samsung Epic 4G Touch] madocs:
I still experienced issues before root, after root, and then again when I went back to stock. The GPS chip hardware thought is interesting - if it IS the chip, that could explain the wide variances in user experience. It could also explain why it suddenly works - or stops working.

Another interesting thought. As I understand it, android conducts CPU scaling by default, but maybe custom profiles aren't supplying the GPS chip with all the juice it needs to operate properly. With so many folks using Calk's ROM, seems like we'd be getting more reports of GPS issues if that was the sole cause - we're mounting more and more evidence that the GPS chip itself may be the problem.

Decent question, but keep in mind that there are many uses for location besides navigation. Examples of indoor things that I do all the time:

*add a GMaps star to your friends house

*rate/review the restaurant that you are in at the moment

*make a social networking post from a concert or other indoor event

Google is also introducing indoor maps to get around in convention centers or shopping malls - http://googleblog.blogspot.com/2011/11/new-frontier-for-google-maps-mapping.html
[Samsung Epic 4G Touch] ayman86:
i called up sprint a few times (got disconnected twice, thus i had 2 different csrs, the first being helpful, and the second not to much)

since i ended with the second csr, she gave me yet another ticket number and will have to go to sprint (repair) store as they are the only ones that can do replacements. so im gonna go to a different one (out of my way but i know they are great since i used them before).

hopefully tomorrow will produce a good outlook.

if i didnt get disconnected from the first csr, i felt like she would have done something for me. the second csr tried to pawn me off to telenav.

through all my relations with sprint, male csr seem the most helpful. lol
[Samsung Epic 4G Touch] puch0021:
Switched back to stock tonight before I go to the store tomorrow. GPS is definitely acting worse compared to to Calk 2.8, EL29, + scripts / GPS drivers. I am convinced it is hardware related and any software patches are just band-aid fixes.

I will be irate if they claim up to a 60-90m accuracy is a functional GPS.
[Samsung Epic 4G Touch] madocs:
Good luck, let us know how it goes...
[Samsung Epic 4G Touch] puch0021:
Update: Went to sprint store, explained the situation and after an hour the tech came back and said a simple battery pull fixed the situation.

*Facepalm*

I went ahead and stated again that the GPS has intermittent and shoddy service off a fresh restart and surely a battery pull isn't the solution (driving). He then went on about how GPS doesn't work well indoors which I then showed him the Evo 3d and IPhone 4S both of which locked instantly while being indoors.

Convinced him to get me a replacement however I didn't walk out the door with one. It has to be shipped apparently? I also tried to get them to ship a white one, not sure if they actually went through with it.

On another note, I was playing with their display E4GT and it showed the same problem my E4GT had. Even after a restart, it was still weak on GPS status. So now I'm unsure if a new model is indeed the real solution or that maybe there still are bad GPS radios in select phones.
[Samsung Epic 4G Touch] nsxla:
A new model will work as long as you get a lock on the satellites often. Don't know once a day? Sounds odd but that is how it works on my phone.
[Samsung Epic 4G Touch] iivisionii:
I'm having the same problems everyone else is having. My friend can have his e4gt right adjacent to mine and have 6/6 satellites lock immediately in my room, while mine will have 0/0 indefinitely. I've done most of the tweaks suggested, even installed several roms, EL29, EL26, EG30, EK02 and none have fixed the problem.

1. Is it easier to get it replaced at the store if you have TEP?

2. I'm guessing it would be refurbished?

3. Does that mean that I might get a worse phone than what i started with since everything else on the phone works perfectly.

4. Do I need to get a jig to reset everything to stock, or just reset to stock by reflashing all software? (I've read some of this on other GS2 forums, but suprisingly not much is said about using a jig to reset flashing counter on E4GT forums.

I've read through most of these posts already and any ideas would be appreciated.
[Samsung Epic 4G Touch] puch0021:
Update Round Two:

I was called for a survey because of my visit to the sprint store. Because of my low and negative survey answers,I was put in touch with a Sprint Priority Response representative that will follow my problem until it is resolved. She was much easier talking to than the store reps and actually understood that an inaccurate GPS while driving is not "functional."

I now await a new replacement model (refurbished? IDK). She will call again to ensure my phone is working up to par.

To the above questions:

1. I was only able to get a replacement at a authorized Sprint repair store. Anywhere else, whether email, chat or phone didn't net me anything.

2. Still not sure if is a refurbished model for replacement.

3. I have the same question as you, my phone is flawless outside GPS.

4.Didn't use a jig. ODINed the stock EK02 from the development forum, removed my nandroid backups from my sd card. Sprint tech didn't or couldn't claim I was ever rooted.
[Samsung Epic 4G Touch] ayman86:
round two:

so i went into the repair store, gave him the ticket number (and actually looked it up). he explained the situation to me (he said as long as it works in store, he couldnt help me). he took the phone and i came back an hour later. told me the gps is nonfunctional after his tests and will order a replacement. asked him if i could get a white one and said only a black is possible. worth a try.

he will call me when the replacement is in. either friday or monday.
[Samsung Epic 4G Touch] iivisionii:
Thanks for the informative response. If you don't mind, keep us updated with how the new phone is. Sounds like out may be worth it to pursuit a replacement, but I'll wait to see the final outcome first.

Sent from my SPH-D710
[Samsung Epic 4G Touch] AzNJJ:
Purchased my phone late December and still have the same issues. The GPS never locks and/or finds satellites. I do not know if it has to do with all the tall buildings in NYC but my HTC Hero never had an issue...

FYI, I purchased my phone via Amazon. Within 2 emails explaining my situation, I have a replacement phone on its way. Wish me luck!
[Samsung Epic 4G Touch] datajosh:
So I made a bit of progress with the GPS sleep issue in EL29... if you replace the GPS daemon (/system/bin/gpsd) with the file from EK02, the phone can find satellites again after sleeping but still can't lock on to them. Gotta figure out what I'm missing at this point. (Or maybe it can be fixed at the kernel level now that source is out but I would have to verify that with someone more knowledgeable than myself.)
[Samsung Epic 4G Touch] puch0021:
I'm beginning to worry a replacement isn't going to fix anything. It really is luck of the draw IMO. Or how can anyone explain why the white E4GT display model, a bad one by chance too?

I really hope it does turn out to be software, something fixable through a patch.
[Samsung Epic 4G Touch] nsxla:
I stated this before and so did another person, as long as you lock on to satellites everyday or so the GPS will continue to work without needing to reboot, but it will work most definitely. Now if the GPS doesn't lock at all you should get a brand new phone as a replacement under the year manufacture warranty.
[Samsung Epic 4G Touch] puch0021:
I had a lock this morning right after a fresh restart and now it doesn't find anything in the exact same position hours later.
[Samsung Epic 4G Touch] nsxla:
Did you use GPS status to check for a lock?

I don't like the idea that GPS status downloads AGPS data, so try installing that app and before you run it go into airplane mode and then open it then men_settings_GPS & sensor_auto-download AGPSdata switch that to NEVER

also in location settings for the phone..... have USE WIRELESS networks checked.
[Samsung Epic 4G Touch] riggs170:
Thank you for the awesome troubleshooting manual, my gps would never lock on I was running calks 2.8. Flashed stock ek02 and now gps is instant. I am skeptical if I should try another rom in fear of gps problems again.

Thanks, sock monkey, qbking77, and Madocs
[Samsung Epic 4G Touch] Klash6543:
it is very interesting to see the different types of GPS issues everyone. I myself how them also when i initiallly got the phone on Eg30, and the update to Eko2 didn't do it for me either. But when i did upgrade the modem to El13 it definitely started to work good, but wouldn't look as well in doors. Just recently though i flashed the El29 modem and i get locks even indoors. I'm also currently running Calkuins 2.8.1 i'm not sure if Calk's has something to do with it, but i definitely the modem was the main issue of the GPS not working. Don't know if i helped anyone, but just putting out there.
[Samsung Epic 4G Touch] puch0021:
Yeah, I always use GPS status to check for locks and how many satellites are fixed.

Uninstalled it, rebooted, cleaned system, redownloaded, airplane mode -> turned download AGPS data off.

I'll see how it works and keep this updated.
[Samsung Epic 4G Touch] iivisionii:
I just put my phone back to stock. Going to take it to sprint tomorrow and see what they say.
[Samsung Epic 4G Touch] iivisionii:
Flashed to stock ek02 modem? What were you using before?
[Samsung Epic 4G Touch] ayman86:
i got replacement. i cant believe it. it locks in my basement (7/7)! perfect phone!

time to root it and put unnammed back on!
[Samsung Epic 4G Touch] iivisionii:
Sweet! I'm getting my replacement tomorrow. They basically said if replacement doesn't work then i'm SOL.

Has anyone else seen this post btw? http://community.sprint.com/baw/message/377223

- scroll down to last post of the page.

Seems if you press on the gps on the back of the phone you might be able to get some sats to lock. I was 0 sats in my room, now i can view 4-5 but not lock by pressing on the gps receiver (above the camera)
[Samsung Epic 4G Touch] maw230:
Ok, so how did you go about getting a replacement? I'm seriously considering this.
[Samsung Epic 4G Touch] jimbobtexas:
Throwing in my $.02 worth. My GPS pretty much stopped working consistently about 2 weeks ago. I use RunKeeper to track my running, and after I run about 15 minutes, it gets a weak lock. Frustrating.

Here's the interesting part: when I put the phone in my car dock, I get an almost immediate GPS lock. However, it's not very strong, and it has a tendency to lose lock, then re-acquire.

Makes me wonder if it's power-level related.
[Samsung Epic 4G Touch] iivisionii:
Update: Got the replacement. Getting perfect GPS lock now indoors and outdoors. One thing i noticed about the new phone is that the power button feels a little more recessed. Don't know if anyone else noticed that. Makes me think they physically changed things around.

To the question above. I went to the sprint repair store and asked for a replacement. I have the total protection plan, so that may make a difference.
[Samsung Epic 4G Touch] maw230:
Did you have to pay a deductible? I have tpp as well.

Sent from my 3p1c 4GT
[Samsung Epic 4G Touch] iivisionii:
No deductible. But they did give me a hard time. I just kind of said that I wouldn't take deal with it as a response and they said they would replace it "one time" and if it didn't work right they wouldn't replace it again. I've only had the phone about 35 days if that matters.
[Samsung Epic 4G Touch] maw230:
Good to know. Glad it worked out for you.

Sent from my 3p1c 4GT
[Samsung Epic 4G Touch] iivisionii:
Thanks, I even managed to reuse my screen protector :)

---------- Post added at 07:39 PM ---------- Previous post was at 07:30 PM ----------

I think there are multiple things wrong with the gps in this phone.

1. soft ware - people can fix by redownloading gps data, etc

2. hardware - press on the gps antenna in the back, instantly get a boost
[Samsung Epic 4G Touch] ayman86:
i essentially did the same thing as iivisionii. i went to a repair store and explained them my problems. they said if they can replicate the problems themselves, they will order me a replacement.

great to hear about your new phone iivisionii. seems like the new batch of phones work perfectly now.
[Samsung Epic 4G Touch] iivisionii:
Thanks to everyone who helped in this thread. If anyone was wondering, the phone looks brand new. No scratches whatsoever. So I don't know if it's refurbished, or just branded as refurbished.
[Samsung Epic 4G Touch] nsxla:
Branded as refurbished? Does it have a sticker behind the battery? Stating it is a refurb?

A brand new phone would be sold in a sealed bag.

Glad you got it replaced with a GPS working unit!
[Samsung Epic 4G Touch] iivisionii:
Nothing on the phone said refurb. It didn't have the stock screen protector that I got when I had the new phone (the one with all the writing). It had a flimsy set of protectors that surrounded every edge of the phone practically to protect it.
[Samsung Epic 4G Touch] dirtfarmer7:
I tried all the different modems and no gps. Took it to a third party sprint store, they offered to get a replacement phone for thirty bucks. I went across the street to a sprint owned sprint store and they replaced it for free. They didn't give me a hard time at all. GPS works great now, I've tried different kernal/modem combos and it locks in a second or two.
[Samsung Epic 4G Touch] ayman86:
exactly like mines. hmmm could be refurb but in all honestly i dont care. as long as it looks/acts like new (with gps working), im happy.
[Samsung Epic 4G Touch] iivisionii:
Same here. In fact, it was better shielded than the original phone. I think they took pretty good care of these phones, whatever they did to them.
[Samsung Epic 4G Touch] nsxla:
This how new phones are packaged. Seal.
[Samsung Epic 4G Touch] ayman86:
yes i am fully aware of that.
[Samsung Epic 4G Touch] AzNJJ:
I got my replacement from amazon without a hard time and now GPS locks within 5 seconds if I'm outdoors. I noticed it isn't as accurate as my old htc hero but it does work now. Im starting to feel it might've been partially a power issue. When i used cheap eBay batteries i noticed the GPS was less accurate. It might just be me but thought it be interesting to know many of you are using non OEM batteries versus OEM batteries that are having GPS issues.
[Samsung Epic 4G Touch] ayman86:
dunno. the package was mailed in and he did everything in the back.

in the end, im quite happy. lol
[Samsung Epic 4G Touch] puch0021:
Update

Just got my new phone. It was a "certified replacement" that had screen protectors. I was in a rush so I didn't have time to ask if it is a refurb. On inspection, no scratches and it looks mint.

Onto the GPS... the GPS works flawless out of box on EK02, fast locks and stable, even indoors. I can now get to a 2 meter lock and see 12 satellites through GPS status. Using weak sensor aidling and NO AGPS download.

I did the OTA update to EL29, results are the same. GPS still flawless.

Cliffs:

Old: Tried all the modems, Calk 2.0 - 2.8.1, all the GPS scripts, all the GPS drivers and nothing was consistent. Would usually get intermittent locks on restart. Driving was a nightmare. Minutes to lock.

New phone: Faster locks (within seconds), more stable, more satellites. I can now travel streets without navigation going haywire claiming I'm on X street instead of Y. I will be rooting and installing Calk's latest + gunslinger kernel. Will update again pending that.

Total paid for replacement: $0.

Sp basically if you are having GPS problems, your best bet is to get a replacement like others have said. There must have been a bad batch as my phone was purchased on launch day.
[Samsung Epic 4G Touch] AWildColin:
None of these suggestions helped me. However, I was seeing errors when using logcat.

E/GpsLocationProvider( 2811): An exception was thrown by callback 'nmea_callback'.
E/GpsLocationProvider( 2811): java.lang.NumberFormatException:
E/GpsLocationProvider( 2811):	at org.apache.harmony.luni.util.FloatingPointParser.parseFloat(FloatingPointParser.java:305)
E/GpsLocationProvider( 2811):	at java.lang.Float.parseFloat(Float.java:323)
E/GpsLocationProvider( 2811):	at com.android.server.location.GpsLocationProvider$SensorAiding.SensorAidingKeepOriginalNmea(GpsLocationProvider.java:2465)
E/GpsLocationProvider( 2811):	at com.android.server.location.GpsLocationProvider$SensorAiding.SensorAidingReportNmea(GpsLocationProvider.java:1823)
E/GpsLocationProvider( 2811):	at com.android.server.location.GpsLocationProvider$SensorAiding.access$1900(GpsLocationProvider.java:1413)
E/GpsLocationProvider( 2811):	at com.android.server.location.GpsLocationProvider.reportNmea(GpsLocationProvider.java:1369)
E/GpsLocationProvider( 2811):	at dalvik.system.NativeStart.run(Native Method)
[Samsung Epic 4G Touch] jazzneel:
I just got my android tablet today (htc flyer-sprint 3g) from the onesaleaday sale, and I love it. The gps on it is amazing....inside my apt I got 12/12 satellites within 10 seconds and a lock of 6 meters accuracy....

My e4gt has never given me 6m accuracy ever! Although in my city of Pittsburgh, in many areas outside I get a lock within 10 seconds, but if 24 meters at the best. It can't even find 1 satellite where my htc flyer found 12 (indoors that is).

I looove my phone, and honestly the only thing I don't like about it is the gps. In general it works well for the most part in my city, (but in SF it was terrrrible), but with my flyer now, I am just shocked.

I usually get a new phone every year, and I'm interested to see what samsung comes with next, and but I may go back to HTC again once the new generation of phones comes up.