Develop Bugs

Any reception signal issues with AT&T Samsung galaxy s3

Some of the people who own a the S3 on Verizon are reporting issues with reception between 3G and LTE especially the handoff between CDMA and lte. Is anyone who has this phone on AT&T experiencing similar issues?

I'm not having any issues using the LTE apn (default).

giper54 said:
Some of the people who own a the S3 on Verizon are reporting issues with reception between 3G and LTE especially the handoff between CDMA and lte. Is anyone who has this phone on AT&T experiencing similar issues?
Click to expand...
Click to collapse
Perfect att reception here
AOKP jellybean by TGFY

i notice a definate death grip (i can verify this by checking the dBm under status in settings) and i also tend to see my data switch between h, H+, and 3g alot.
not in an LTE area

Sprint Galaxy S3 network connection issues
Good day everyone. I just recently purchased a New Galaxy S3 from a local Spint store. I have been a loyal Sprint customer for 15 years. I have owned many different phones (Star-Tac, Sony, Touch-pro 1-2, Evo, EVO 4G) Over the past 2 weeks since buying the S3, I've noticed a SERIOUS drop in network connectivity, both Data & Cell for absolutely no reason. Now, stop me if I'm wrong, but on my Evo 4G, I could connect to the internet EVEN if I didn't have a 3g signal... As long as I had Cell bars, I could access the web no problem. So the S3 is giving me some headaches and I've seen on other forums that others are too. These people are on diffferent carriers too.
So here's my issue. When I'm in a GOOD STRONG Sprint network, I've been attempting to access the web (Google Store or You-Tube) and have seen the 3g or 4G icon on the bar show data up/downloading then WINK, they dissappear and I get a "No connection RETRY" window. I've made many changes, selected CDMA instead of CDMA/LTE, vice-cersa. I've updated PRL, Profile, Firmware and even have the new Jelly Bean 4.1.1
I've contacted Samsung and "Chatted" with a technician, but this person had NO clue of this issue... I gave them the links to this and other Android forums...
So do I take it back? Revert back to my Evo? I have to say, the speed and versatility on the S3 when it's good, is GREAT, but I'm not one to have some half good, especially one so expensive...
Any imput is appreciated... :fingers-crossed:

GS3 on ATT in Austin Tx
giper54 said:
Some of the people who own a the S3 on Verizon are reporting issues with reception between 3G and LTE especially the handoff between CDMA and lte. Is anyone who has this phone on AT&T experiencing similar issues?
Click to expand...
Click to collapse
I get stellar reception and speeds in major cities and highways throughout the state. Honestly I've never seen my phone drop to 3G but I'm not in rural areas often. I have see speedtests as high as 65mb down in Austin.

Nope nope nope.. All well n good
Sent from my SAMSUNG-SGH-I747 using xda premium

No Problems Here
I have an ATT S3 and I haven't had any noticeable problems.

Great reception with my AT&T SGS3
Sent from my SGH-I747 using xda premium

Out in a 4G area here in Minneapolis, MN. It might have been a fluke with CM10, but my signal would cut in and out every 30 minutes or so. Flashed AOKP and it works fine, but it was weird.

Trading EVO LTE Stories?

Hey All,
Just wondering if anyone has succesfully traded an EVO LTE for a Galaxy SIII in store. Im plagued by LTE drops and the signal on the Evo not working properly. If you were able to convince the Sprint Corporate stores to swap out your phone, please drop some advice. Thanks!

There's another thread about this, all u need to do is replicate the lte problem for the rep and they will exchange it for you.
Sent from my SPH-L710

Not sure what string of words to search for, can you drop a link? Ive seen people ask whether or not they should do it, not really with stories on how to do it though.

Buried towards the end of this thread http://forum.xda-developers.com/showthread.php?t=2001667 are a few posts by ppl who got to switch due to the lte connectivity issues. They just went in to corporate store rep checked lte connection against other devices and swapped em for sgs3 no question asked
Sent from my SPH-L710

International Roaming Area??

Hey All,
After much debate, I am the proud owner of a GN2. The thing is awesome and the size does not bother me at all.
However, I am having a strange issue. I work in a building that causes my phone to roam. When I send a text I get the following message:
"You are in an international roaming area. You may incur charges for SMS. Select an option:
-Auto send when in a Domestic coverage area
-Send Now
-Save as a draft message."
I have talked to a Sprint Tech. He confirmed that I am not being charged for sending text messages internationally. However, after updating PRL, Profile, I still get the message. Any ideas?
Thanks, Tony

aypanthony said:
Hey All,
After much debate, I am the proud owner of a GN2. The thing is awesome and the size does not bother me at all.
However, I am having a strange issue. I work in a building that causes my phone to roam. When I send a text I get the following message:
"You are in an international roaming area. You may incur charges for SMS. Select an option:
-Auto send when in a Domestic coverage area
-Send Now
-Save as a draft message."
I have talked to a Sprint Tech. He confirmed that I am not being charged for sending text messages internationally. However, after updating PRL, Profile, I still get the message. Any ideas?
Thanks, Tony
Click to expand...
Click to collapse
I remember those in the east coast are reporting of a similar problem. Since released day my phone have never experience this problem up until this morning when I got to work (East bay, Cali) and still showing roaming non stop. This is quite frustrating to say the least. Hopefully it affecting just the area around my work due to the recent storm we have here in Northern Cali.

Really? I've got no issues here.
Sent from my Galaxy Note II using XDA Premium.

Mine says it once and a while
Sent from my SPH-L900 using xda premium

Mine gives me international roaming notice at work where I have awfuk signal. Im in south jersey so I know im not roaming. I called sprint and they were less than unhelpful
Sent from my SPH-L900 using xda app-developers app

mikey123 said:
Mine gives me international roaming notice at work where I have awfuk signal. Im in south jersey so I know im not roaming. I called sprint and they were less than unhelpful
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
My experience to troubleshoot with Sprint tech mirrors yours.
Sent from my SPH-L900 using xda app-developers app

as soon as i walk in my house i start int roaming, so i have to use wifi and limit calls, i have Sero-P and they would just love to cancel my plan

I have the same issue. I guess domestic roaming is international?
Sent from my SPH-L900 using xda app-developers app

Since when is Southwestern PA....internationally roaming?
I am having the same issue with my Samsung Galaxy Note II. I bought it on Dec 9th and swapped it out at the sprint store last night for another one since they were assuming that the first one had an antennae issue. The replacement is doing the same exact thing however the signal strength increased.
I contacted Sprint customer service numerous times since I got it on the 9th. I still haven't had any helpful information given to me.
Yesterday while I was on the phone with customer service, I was told that since Pennsylvania is kind of close to the Canadian border and that's why I'm internationally roaming........I'm confused...because I'm not close to Canada.
Has anyone had any luck on finding some useful/helpful information regarding this problem?
It's really frustrating and I'm close to taking my Note II back and go back to my old phone.

I truly believe our phones are telling us we are internationally roaming when we clearly aren't. I'm in south jersey... nowhere near a boarder. I turned my roam guard off until someone can help us out further
Sent from my SPH-L900 using xda app-developers app

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I'm having the exact same problem on my brand new (as of 12/16/2012) Note 2, but I'm in NE FLORIDA -- unless Sprint considers Georgia to be a foreign country, then I'm no where near any international border. I haven't received a solution yet, but just letting you know that it can actually be more ridiculous than what some of you are experiencing who are remotely close to Canada. I mean, what? Am I roaming on Castro's cellular network? Bermuda Triangle magnetic field?

in nyc its affecting me as well for nearly 2 months and 3 different note 2s, but no effects on my S1 S2 S3 or OG Evo

It happened to me yesterday. I think it just has something to do with the way Samsungs roaming setting is coded. I was in Pacific Grove (Monterey Bay) at our hotel near the beach. I had a weak roaming signal and when I sent a text it said it was international. It asked if I wanted to send it, as I would get charged etc.
Sent from my Galaxy Note II using XDA Premium.

i get the same thing in the south bay, ca. i am now able to "international roam" inside buildings that my epic would loose all service in. whatever the issue is for the incorrect labeling on roaming, it shows up on my bill as roaming. i worry if they do fix this particular issue that i might loose roaming inside some buildings as opposed to when i would have no service at all.

Just a thought... Do any of you guys have OpenSignalMaps or an app like that?
Makes me wonder if you're connecting to GSM (ATT) and that's thinking it's international....

solution: (if someone want to fix that)
change from true to false or add that line in file feature.xml its locatet on root \system\csc\feature.xml
<CscFeature_Message_EnableRoamGuard>false</CscFeature_Message_EnableRoamGuard>
or download csc features expert apk and change
Enable Roam Guard
false

Tmobile 4G slow connectivity speed

Since T-mobile live chat did help one bit (background info will be provided shortly), I figure I'll ask the helpful people on XDA.
Trouble: I have a Samsung Galaxy Note 2 (t-mobile variant) running the latest update that is suppose to enable LTE (updated through kies). On 3 to 4 bars out of 4 bars of 4G signal, my download speed varies from 0.05 mbps (when I initially got them in nov 2012) to 5 mbps according to speedtest.net; however, I have seen download speed of 12mbps, but that is only around a local T-mobile store. My 2 locations that I always test are all within 1 hour driving from downtown Los Angeles (with the closest one being only 10 minutes drive) and both city are in populated area, so both cities should provide pretty good HSPA+ signal. The only possibility for the cause that I can think of is the modification to t-mobile's 1900 band, but an employee at a local T-mobile store told me that the Galaxy Note 2 shouldn't be affected by this unless there is a special case. But problem is, I almost never seen a connection speed that goes past 7mbps on my phone.
What T-mobile live chat told me: I won't post the entire chat history unless people really want to see and give yourself some palm to face, so here is a very accurate summary of it. 1) it is very reasonable to be running at a download speed of 0.2 mbps on a full bar of 4G HSPA+ 42 signal on my galaxy note 2. 2) I will be stuck with this speed until LTE rolls out. 3) YES my speed WILL BE THE SAME as my iPhone 3G running on EDGE network from 4 years ago. (I asked #3 as part of a joke because I am just so speechless before that point, and the person actually agreed with that statement) Throughout this chat session, I was provided with links to troubleshoot and possible explanations. One link stated the situation where you go over your data limit, which I have used 1.4GB out of my 5GB data plan.
TL;DR (too long; didn't read): 4G speed on note 2 really slow (read the numbers in the 1st paragraph) and t-mobile live chat representative is completely clueless (funny read if you have time)

Same issue here, ive been experiencing it since December last year. At first I got 0.00mb for weeks when normally I would get 8mb to 15mb down. Tmo requested a service ticket which by the way is still open. According to them work is being done on the towers but its been months now. Ill stick with tmobile, I know they'll make it right. As of now my phone will either get 3mb down or network errors.
Sent from my SGH-T889 using xda app-developers app

haha438 said:
Since T-mobile live chat did help one bit (background info will be provided shortly), I figure I'll ask the helpful people on XDA.
Trouble: I have a Samsung Galaxy Note 2 (t-mobile variant) running the latest update that is suppose to enable LTE (updated through kies). On 3 to 4 bars out of 4 bars of 4G signal, my download speed varies from 0.05 mbps (when I initially got them in nov 2012) to 5 mbps according to speedtest.net; however, I have seen download speed of 12mbps, but that is only around a local T-mobile store. My 2 locations that I always test are all within 1 hour driving from downtown Los Angeles (with the closest one being only 10 minutes drive) and both city are in populated area, so both cities should provide pretty good HSPA+ signal. The only possibility for the cause that I can think of is the modification to t-mobile's 1900 band, but an employee at a local T-mobile store told me that the Galaxy Note 2 shouldn't be affected by this unless there is a special case. But problem is, I almost never seen a connection speed that goes past 7mbps on my phone.
What T-mobile live chat told me: I won't post the entire chat history unless people really want to see and give yourself some palm to face, so here is a very accurate summary of it. 1) it is very reasonable to be running at a download speed of 0.2 mbps on a full bar of 4G HSPA+ 42 signal on my galaxy note 2. 2) I will be stuck with this speed until LTE rolls out. 3) YES my speed WILL BE THE SAME as my iPhone 3G running on EDGE network from 4 years ago. (I asked #3 as part of a joke because I am just so speechless before that point, and the person actually agreed with that statement) Throughout this chat session, I was provided with links to troubleshoot and possible explanations. One link stated the situation where you go over your data limit, which I have used 1.4GB out of my 5GB data plan.
TL;DR (too long; didn't read): 4G speed on note 2 really slow (read the numbers in the 1st paragraph) and t-mobile live chat representative is completely clueless (funny read if you have time)
Click to expand...
Click to collapse
Just change your apn to old apn. You will get your speed before update. New apn with update will benefit if you are in LTE area.

jay661972 said:
Just change your apn to old apn. You will get your speed before update. New apn with update will benefit if you are in LTE area.
Click to expand...
Click to collapse
I would if it would work. I've had a galaxy S2 and a galaxy S3 since then and they all have the issue. seems like i'll have to wait it out.

what is the old APN settings?

haha438 said:
what is the old APN settings?
Click to expand...
Click to collapse
Here you go .... http://support.t-mobile.com/docs/DOC-1979

Crazy4G1 said:
Same issue here, ive been experiencing it since December last year. At first I got 0.00mb for weeks when normally I would get 8mb to 15mb down. Tmo requested a service ticket which by the way is still open. According to them work is being done on the towers but its been months now. Ill stick with tmobile, I know they'll make it right. As of now my phone will either get 3mb down or network errors.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
Other than 3 or 4 specific areas, I have yet to see a speed past 8mpbs, even 6 to 7mpbs are rare. This has been going on since the day i got the phone, and just like you, i was told that the towers' 1900 band is being modified. But today, i was told that the modification shouldn't affect my phone, which lead me to talk to tmobile through their online chat system

Try calling up T-Mobile and complain about data speed is freaking slow. Ask them to reset your data. I did that couple day ago. now my speed before was 5meg down now its 15+ meg download.
Sent from my SGH-T889 using xda app-developers app

haha438 said:
Other than 3 or 4 specific areas, I have yet to see a speed past 8mpbs, even 6 to 7mpbs are rare. This has been going on since the day i got the phone, and just like you, i was told that the towers' 1900 band is being modified. But today, i was told that the modification shouldn't affect my phone, which lead me to talk to tmobile through their online chat system
Click to expand...
Click to collapse
When I upgraded from my Vibrant to the Sensation, I was under the impression that because of the Sensation's radio, that my speeds would be doubled because it had HSPA+ 21. Then I got the S3 and now the Note 2 and assumed the HSPA+42 radio would double my speeds again. Sadly, that has never been the case. My speeds between the Vibrant and the N2 are not much different in most places. Almost wish I still had my Vibrant so I could prove myself wrong lol.
I've tried conversing with Tmobile many times, wondering if it's because I have the old required android web, which is supposed to be unlimited, without throttling. Tmobile has claimed every time that's not the case but I don't know if I can believe it. Almost tempted to buy an old Vibrant on ebay just to test it out.

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tony yayo said:
When I upgraded from my Vibrant to the Sensation, I was under the impression that because of the Sensation's radio, that my speeds would be doubled because it had HSPA+ 21. Then I got the S3 and now the Note 2 and assumed the HSPA+42 radio would double my speeds again. Sadly, that has never been the case. My speeds between the Vibrant and the N2 are not much different in most places. Almost wish I still had my Vibrant so I could prove myself wrong lol.
I've tried conversing with Tmobile many times, wondering if it's because I have the old required android web, which is supposed to be unlimited, without throttling. Tmobile has claimed every time that's not the case but I don't know if I can believe it. Almost tempted to buy an old Vibrant on ebay just to test it out.
Click to expand...
Click to collapse
You have to be joking. Just because it's capable does not mean the congested network will give you that.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Slowed down here in NYC about a month ago. Can't wait for LTE, latest news says "early summer".

I just got this phone and noticed a slow down speed as well. If you want to call it that...
On my s3, in good 4G coverage, I was getting 12-20mbps, to where I never see over 10 now. My uploads are about the same though, in the mid 3's.
I honestly can't tell a huge difference in speed in my case. I will say, my Note trumps my s3 in every way you can imagine.... Minus speed.
Just kind of a gut check, lol!
I feel for some of you guys with those low mbps.
Sent from my SGH-T889 using Tapatalk 2

the T-mobile signal on s4

Seems the signal isn't good on the S4, flashed the base band ,an d the problem still exists...
Bad luck

karl_2000 said:
Seems the signal isn't good on the S4, flashed the base band ,an d the problem still exists...
Bad luck
Click to expand...
Click to collapse
might just be your area, i get full bars and kick a** data speeds all around my city

TheAtheistOtaku said:
might just be your area, i get full bars and kick a** data speeds all around my city
Click to expand...
Click to collapse
+1 to this

karl_2000 said:
Seems the signal isn't good on the S4, flashed the base band ,an d the problem still exists...
Bad luck
Click to expand...
Click to collapse
I have the same issue. I'm in the SF Bay Area and even though TMobile's site has where I live and work as dark green (excellent 4g) I am lucky to get even one bar. Half the time I get network errors. Anyone else with TMobile experience anything like this? Any chance it's something that'll get resolved before my 30 day return period ends?

do any of you have other tmobile phones to compare signals with? if so, do that and if there are major differences talk to a tmobile store about getting a replacement.
these might be isolated incidents, because the majority of people are getting fully functional units

Wavern said:
I have the same issue. I'm in the SF Bay Area and even though TMobile's site has where I live and work as dark green (excellent 4g) I am lucky to get even one bar. Half the time I get network errors. Anyone else with TMobile experience anything like this? Any chance it's something that'll get resolved before my 30 day return period ends?
Click to expand...
Click to collapse
im in SF bay area (mountain view)
my data speeds are *top notch*.
you are either in an area thats out of tmobiles footprint or have a defective unit.
best bet would be to wait till tmobile actually gets the GS4 on display in the store.
when they do, go to your nearest tmob, and do a speedtest.net comparison with the demo model, and yours. if they are similar, then your part of the bay is legacy; if there is a big difference; 3,4 5 etc megabit difference; your unit may be worth exchanging for a new unit.

Wavern said:
I have the same issue. I'm in the SF Bay Area and even though TMobile's site has where I live and work as dark green (excellent 4g) I am lucky to get even one bar. Half the time I get network errors. Anyone else with TMobile experience anything like this? Any chance it's something that'll get resolved before my 30 day return period ends?
Click to expand...
Click to collapse
What part of SF are you experiencing this? My GF lives by the ballpark & she won't switch with me if she gets ****ty service.

I have excellent reception (bars) on my S4.
Way better than my Note II.

I let you know. When I get my phone next week. I do a speedtest and a screenshot of the phone signal in the settings menu.
DEVICES:
NEXUS 7 32GB STOCK
(NO ROOT)
T-MOBIL LG G2X (LG-P999)
STOCK (ROOTED)
Sent from my LG-P999 using xda premium

Have S4 and One, both show identical signal and speeds are also same.
Sent from my SGH-M919 using Tapatalk 2

Im getting much improved signal compared to my Gnex and Atrix HD.
Sent from my SGH-M919 using Tapatalk 2

Still no signal inside my workplace. Will do more tests. It does seem the signal is more stable, but it's only been a couple days.
Also, 4G LTE flashed for a couple seconds at my house. I live in the D.C metro area. Nice.

I have the HTC One in the Phoenix market. LTE is difficult to find more than a few bars on. 4G HSPA+ has been very easy to get full bars on.
I'm somewhat convinced T-Mobile is still working on building out in even LTE and re-farmed markets.
Sent from my cm_tenderloin using Tapatalk HD

Its funny how T-Mobile improves their network and yet many years later I still don't have service in places where I had no service maybe 5-6 years ago. And on top of this I noticed even more dead spots. I think T-Mobile should be working on that along with building penatration.....I would much rather have 3G everywhere then LTE almost nowhere.
Lately it became very frustrating since my wife has no service at work, i have no service at work, and i recently moved to different location and still no service....and God forbid I loose my wife in the mall, I have zero chances of finding her because no T-Mobile service inside.

Just got my S4 today and did not realize theres LTE where I work (fremont) which I never saw on my note 2. Even went out to lunch and was still getting LTE the next street over. So just to test I'm now back on my note 2 and it is not picking up LTE at my work. That tells me the radio on the s4 is much better.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

Oops
Sent from my SGH-M919 using XDA

Wavern said:
I have the same issue. I'm in the SF Bay Area and even though TMobile's site has where I live and work as dark green (excellent 4g) I am lucky to get even one bar. Half the time I get network errors. Anyone else with TMobile experience anything like this? Any chance it's something that'll get resolved before my 30 day return period ends?
Click to expand...
Click to collapse
yea its something with the S4's phone/modem. I get bars and shows signal strength of 3 to 4 bars and i can make call but no internet in certain areas all around Los Angeles County/Orange County/Las Vegas/NYC. To test it i had my buddy go with me with his LG L9 and my buddy with his LG L9 phone would work fine on the calls and data/internet meanwhile my S4 would only get calls but no data as if it was a deadspot. i would have to go around like 1/4 or so before it would work again. its really strange not to mention annoying. I noticed this started happening to me after i upgraded from MDB to the MDL baseband and after i unlocked the phone using the "debug service menu". i wish i knew someone else with a stock TMO S4 to test my findings out more. I also cant wait for more tmo S4 modems. ive been thinking of ODINing back to stock MDB to test my theory, but i have just been lazy.
---------- Post added at 08:20 PM ---------- Previous post was at 07:24 PM ----------
XeoNoX said:
yea its something with the S4's phone/modem. I get bars and shows signal strength of 3 to 4 bars and i can make call but no internet in certain areas all around Los Angeles County/Orange County/Las Vegas/NYC. To test it i had my buddy go with me with his LG L9 and my buddy with his LG L9 phone would work fine on the calls and data/internet meanwhile my S4 would only get calls but no data as if it was a deadspot. i would have to go around like 1/4 or so before it would work again. its really strange not to mention annoying. I noticed this started happening to me after i upgraded from MDB to the MDL baseband and after i unlocked the phone using the "debug service menu". i wish i knew someone else with a stock TMO S4 to test my findings out more. I also cant wait for more tmo S4 modems. ive been thinking of ODINing back to stock MDB to test my theory, but i have just been lazy.
Click to expand...
Click to collapse
i think it was a TMO LTE tower upgrade issues. after doing the Settings > More networks > Mobile networks > Network mode > and switching between the WCDMA and GSM one or the other now will work. better to have some internet than no internet, weird how the S4 just wont switch over to the working GSM internet if WCDMA fails....i guess when they coded it they figured if u have bars it "should work in theory" but they were wrong ...personally i think this should be considered a "bug"

I thought I was the only one. I found that if i keep my diztronic tpu case on while in my pocket it destroys all signal for some reason. I take it off and its fine.

layzer253 said:
I thought I was the only one. I found that if i keep my diztronic tpu case on while in my pocket it destroys all signal for some reason. I take it off and its fine.
Click to expand...
Click to collapse
I further tested my theory and went without my case all day. It didnt appear to do anything different at all. I am on CM10.1, I think I might go back to stock for awhile to see if it changes the fluctuating signal issue.

Just curious on how everyones signal is and which baseband they are on?
I'm on M919UVUAMDL and I have seen up to 15% of no signal while my S3 had 0 signal loss in a regular day.