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?
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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.

Galaxy S3- Some LTE coverage and no reception at all?

I bought my Samsung Galaxy S3 - 16gb from Bell around 2 months ago, I live in Calgary. The area I live in is fully covered with 3G and LTE, but sometimes it switches from LTE to 3G automatically for some reason even though LTE is suppose to be covered everywhere I go. Other times I lose all reception and it says "No service" on my lock screen and/or lose my mobility data connection and I usually have to restart my phone to get it back or move away to another place, this has happened inside and outside.
I know Galaxy S3 has been having problems with their reception and Samsung is working on a fix that might come in the next 4.1 Jelly Bean update but is it Bell or Samsung? I know Bell has good coverage and service so Im not sure what to do.

Call your provider
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

I will second this problem.
I've flashed many roms, AOSP, TW-based, etc.
I've actually thought of starting a new aggregate thread based on S3 difficulties that aren't specific to any rom.
I can go days with LTE coverage (I live and work between Kingston and Toronto) both great LTE.
Generally, when I go inside my work building in Kingston, I lose LTE - and then ALL data connection. It won't reconnect without a reboot.
Samsung CS told me it was a Bell problem.
Bell told me it was an Android problem.
VERY frustrating.

hawksking said:
I bought my Samsung Galaxy S3 - 16gb from Bell around 2 months ago, I live in Calgary. The area I live in is fully covered with 3G and LTE, but sometimes it switches from LTE to 3G automatically for some reason even though LTE is suppose to be covered everywhere I go. Other times I lose all reception and it says "No service" on my lock screen and/or lose my mobility data connection and I usually have to restart my phone to get it back or move away to another place, this has happened inside and outside.
I know Galaxy S3 has been having problems with their reception and Samsung is working on a fix that might come in the next 4.1 Jelly Bean update but is it Bell or Samsung? I know Bell has good coverage and service so Im not sure what to do.
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Click to collapse
Bell is aware of an issue that is causing users that are in an lte coverage area to lose reception when dropping down to hspa+. This will be fixed sooon.
Edit: I'm aware of this as I work for bell
Sent from my SGH-I747M using xda app-developers app

sprint galaxy s3 network issues

we bought two galaxy S3 and a galaxy note 2 on black Friday and we are very impressed by the quality of the Samsung phones. However, galaxy s3 phones are having 3G network issues. Our apartment is not getting very good reception with sprint but 3G speed tests are consistent with less than 100ms ping and 0.4-1mbps download speeds and 4g wimax speeds are decent. We have an airave device since we had issues with voice reception and we are very impressed by the device. However, galaxy s3 phones are having issues with 3G reception regardless if it is under airave reception or just outside tower reception. It was getting good speed and all of sudden 3G network turns itself off and it comes back on. I thought it was due to weak 3G signal into our apartment but it is doing the same with airave 3G and I thought it was mainly due to the programming of the phone since galaxy s3 has better reception quality than my galaxy s epic 4g. so I went to setting > network > more options > mobile network > and turned on CDMA only and those issues are gone with galaxy s3s. I think the phones are trying to connect to LTE and if the area does not have the coverage yet, it resets the 3G radio. During the resetting, the 3G coverage disappears and disrupts the data. has this been ongoing problem for the galaxy s3 on sprint? my galaxy s1 epic 4G never has this issue and we are wondering CDMA only option is temporary fix for the issue. if anyone had similar problem and was able to fix it, let me know. thank you.

sangbyung said:
we bought two galaxy S3 and a galaxy note 2 on black Friday and we are very impressed by the quality of the Samsung phones. However, galaxy s3 phones are having 3G network issues. Our apartment is not getting very good reception with sprint but 3G speed tests are consistent with less than 100ms ping and 0.4-1mbps download speeds and 4g wimax speeds are decent. We have an airave device since we had issues with voice reception and we are very impressed by the device. However, galaxy s3 phones are having issues with 3G reception regardless if it is under airave reception or just outside tower reception. It was getting good speed and all of sudden 3G network turns itself off and it comes back on. I thought it was due to weak 3G signal into our apartment but it is doing the same with airave 3G and I thought it was mainly due to the programming of the phone since galaxy s3 has better reception quality than my galaxy s epic 4g. so I went to setting > network > more options > mobile network > and turned on CDMA only and those issues are gone with galaxy s3s. I think the phones are trying to connect to LTE and if the area does not have the coverage yet, it resets the 3G radio. During the resetting, the 3G coverage disappears and disrupts the data. has this been ongoing problem for the galaxy s3 on sprint? my galaxy s1 epic 4G never has this issue and we are wondering CDMA only option is temporary fix for the issue. if anyone had similar problem and was able to fix it, let me know. thank you.
Click to expand...
Click to collapse
You're probably right.
The only real way to avoid it is to disable LTE during the time when you're at home.
Alternatively, see if it will simply hold an LTE signal instead of using the airave, though I doubt it will.
The reason for the difference is that the Epic 4G is using Wimax, while the Galaxy S3 and Note II are using LTE.

sangbyung said:
we bought two galaxy S3 and a galaxy note 2 on black Friday and we are very impressed by the quality of the Samsung phones. However, galaxy s3 phones are having 3G network issues. Our apartment is not getting very good reception with sprint but 3G speed tests are consistent with less than 100ms ping and 0.4-1mbps download speeds and 4g wimax speeds are decent. We have an airave device since we had issues with voice reception and we are very impressed by the device. However, galaxy s3 phones are having issues with 3G reception regardless if it is under airave reception or just outside tower reception. It was getting good speed and all of sudden 3G network turns itself off and it comes back on. I thought it was due to weak 3G signal into our apartment but it is doing the same with airave 3G and I thought it was mainly due to the programming of the phone since galaxy s3 has better reception quality than my galaxy s epic 4g. so I went to setting > network > more options > mobile network > and turned on CDMA only and those issues are gone with galaxy s3s. I think the phones are trying to connect to LTE and if the area does not have the coverage yet, it resets the 3G radio. During the resetting, the 3G coverage disappears and disrupts the data. has this been ongoing problem for the galaxy s3 on sprint? my galaxy s1 epic 4G never has this issue and we are wondering CDMA only option is temporary fix for the issue. if anyone had similar problem and was able to fix it, let me know. thank you.
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Yeah and another thing that i have personally noticed is that they GS3 with some people, have problems connecting to the ariwave. this was one reason why i sold my first gs3 back in July.

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Call to action!
sangbyung said:
we bought two galaxy S3 and a galaxy note 2 on black Friday and we are very impressed by the quality of the Samsung phones. However, galaxy s3 phones are having 3G network issues. Our apartment is not getting very good reception with sprint but 3G speed tests are consistent with less than 100ms ping and 0.4-1mbps download speeds and 4g wimax speeds are decent. We have an airave device since we had issues with voice reception and we are very impressed by the device. However, galaxy s3 phones are having issues with 3G reception regardless if it is under airave reception or just outside tower reception. It was getting good speed and all of sudden 3G network turns itself off and it comes back on. I thought it was due to weak 3G signal into our apartment but it is doing the same with airave 3G and I thought it was mainly due to the programming of the phone since galaxy s3 has better reception quality than my galaxy s epic 4g. so I went to setting > network > more options > mobile network > and turned on CDMA only and those issues are gone with galaxy s3s. I think the phones are trying to connect to LTE and if the area does not have the coverage yet, it resets the 3G radio. During the resetting, the 3G coverage disappears and disrupts the data. has this been ongoing problem for the galaxy s3 on sprint? my galaxy s1 epic 4G never has this issue and we are wondering CDMA only option is temporary fix for the issue. if anyone had similar problem and was able to fix it, let me know. thank you.
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TO ALL!!!! this is a call to action. I too, like many others are experiencing unacceptable data speeds while on 3G and in great reception while uing the Galaxy S III. the speeds I should be recieving are 1.5-3 MB/s but instead I am recieving around 128Kb/s in the city and within excellent service. We all have to pay a 'Premium Data Add-On' charges just to own these phones and this is unacceptable. Please write an Email to [email protected], vice president of customer experience at sprint and let him know what you are experiencing. Maybe if enough pissed off customers write, they will finally listen!

4g4me said:
TO ALL!!!! this is a call to action. I too, like many others are experiencing unacceptable data speeds while on 3G and in great reception while uing the Galaxy S III. the speeds I should be recieving are 1.5-3 MB/s but instead I am recieving around 128Kb/s in the city and within excellent service. We all have to pay a 'Premium Data Add-On' charges just to own these phones and this is unacceptable. Please write an Email to [email protected], vice president of customer experience at sprint and let him know what you are experiencing. Maybe if enough pissed off customers write, they will finally listen!
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Click to collapse
You are a moron.
http://forum.xda-developers.com/showthread.php?p=36380064#post36380064
http://forum.xda-developers.com/showthread.php?p=36380166#post36380166
http://forum.xda-developers.com/showthread.php?p=36380185#post36380185
http://forum.xda-developers.com/showthread.php?p=36380190#post36380190
http://forum.xda-developers.com/showthread.php?p=36380266#post36380266
http://forum.xda-developers.com/showthread.php?p=36380387#post36380387
They're not going to do anything. Your signature means you're a hypocrite. Calling people douchwads. Can't even spell.

Thanks for contributing! Its cheese bags like you that really make forums informational, And good job reporting me! I hope that made your life better. You know what, guy with no life, I have received at least 1 thanks, in at least one of the many forums I have found outlining the same issue ( that you linked to and BTW you missed a few! :-0) so its worth it to hear a sprint employee like you to shed some tears! Thanks for wasting everyone who reads your and my post's time!
Sent from my Nexus 7 using Tapatalk HD

sangbyung said:
we bought two galaxy S3 and a galaxy note 2 on black Friday and we are very impressed by the quality of the Samsung phones. However, galaxy s3 phones are having 3G network issues. Our apartment is not getting very good reception with sprint but 3G speed tests are consistent with less than 100ms ping and 0.4-1mbps download speeds and 4g wimax speeds are decent. We have an airave device since we had issues with voice reception and we are very impressed by the device. However, galaxy s3 phones are having issues with 3G reception regardless if it is under airave reception or just outside tower reception. It was getting good speed and all of sudden 3G network turns itself off and it comes back on. I thought it was due to weak 3G signal into our apartment but it is doing the same with airave 3G and I thought it was mainly due to the programming of the phone since galaxy s3 has better reception quality than my galaxy s epic 4g. so I went to setting > network > more options > mobile network > and turned on CDMA only and those issues are gone with galaxy s3s. I think the phones are trying to connect to LTE and if the area does not have the coverage yet, it resets the 3G radio. During the resetting, the 3G coverage disappears and disrupts the data. has this been ongoing problem for the galaxy s3 on sprint? my galaxy s1 epic 4G never has this issue and we are wondering CDMA only option is temporary fix for the issue. if anyone had similar problem and was able to fix it, let me know. thank you.
Click to expand...
Click to collapse
Had problem to for the first couple days after getting my s3 but all the bugs worked out. As far as cdma/lte and cdma option. I switched to just cdma being lte not up and running. This will save battery being phone wont be looking for lte network
Sent from my Samsung Galaxy s3

You can also contact sprint. They have updates for the airave and if that dont work they will send the new design one. Reason is s3 is new surf and talk and airave is standard cdma. Call takes about an hour for them to go through all thier steps. Before you call try *99 it will force connection to airave first and see if you still lose it.
Sent from my SPH-L710 using xda premium

Signal drops from time to time

I thought this was a fluke, but now I'm using the Sprint Galaxy S3 I discovered it's real. I flash phones to the network I work for in Nigeria - Visafone, and of all the phones I've encountered so far (I've used a Droid Incredible, a Verizon Galaxy Nexus and flashed numerous other phones for other people) this problem only occurs with the Sprint Galaxy S3. I've tried all the available modems and this even made me to be on the lookout for the latest leaks so I can flash for the few clients I've done the Sprint S3 for. Now I'm using it myself I found that this is a real pain; network goes off intermittently and you need to reboot for it to come back again. Please has anyone else who is using the Sprint S3 on another network experienced this, and if so is there any fix?

I haven't had this problem in a long while, then I had it only while running through my airave. Here I think sprints network was to blame. I am currently running mc3 radio with no problems what so ever. Now every once and awhile while on airave only, my 3g will quit and come back up.
sent from somewhere

joeyhdownsouth said:
I haven't had this problem in a long while, then I had it only while running through my airave. Here I think sprints network was to blame. I am currently running mc3 radio with no problems what so ever. Now every once and awhile while on airave only, my 3g will quit and come back up.
sent from somewhere
Click to expand...
Click to collapse
I think this problem largely occurs only Sprint S3s. Strangely though I've never experienced it with other devices from other networks flashed to Visafone. Even some Sprint Epic 4G Touch phones I've flashed to Visafone are rock stable; no complaints about the signal drops. Just the Sprint S3s.

Originally Posted by joeyhdownsouth<br />
I haven't had this problem in a long while, then I had it only while running through my airave. Here I think sprints network was to blame. I am currently running mc3 radio with no problems what so ever. Now every once and awhile while on airave only, my 3g will quit and come back up.<br />
<br />
sent from somewhere
Click to expand...
Click to collapse
<br />
I think this problem largely occurs only Sprint S3s. Strangely though I've never experienced it with other devices from other networks flashed to Visafone. Even some Sprint Epic 4G Touch phones I've flashed to Visafone are rock stable; no complaints about the signal drops. Just the Sprint S3s.
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Click to collapse
Are you sure Sprint isnt updating towers in your area? It may also be the Connection Optimizer kicking in and constantly changing your connection.

CNexus said:
Are you sure Sprint isnt updating towers in your area? It may also be the Connection Optimizer kicking in and constantly changing your connection.
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Click to collapse
I am not using Sprint network. These are Sprint devices but flashed to Visafone Nigeria where I work. I've flashed about 200 phones altogether and it's only with the Sprint S3s that this occurs. Some other Sprint devices I've flashed work flawlessly, I even did an LG LS970 just yesterday and it's fine, no signal drops. I also noticed that the Mobile Network type changes from EVDO REV A to 1XRTT and back again from time to time, perhaps an antenna issue(?). I've tried ALL the existing Sprint S3 radios but problem still persists. Even though I have the feeling that the connection optimiser is for wifi and 4g, I also disabled it. Still the problem persists.

CNexus said:
Are you sure Sprint isnt updating towers in your area? It may also be the Connection Optimizer kicking in and constantly changing your connection.
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Click to collapse
I believe they finished updating towers in my area, not the optimizer, 1st app I erase when flashing a rom.
---------- Post added at 06:21 PM ---------- Previous post was at 06:19 PM ----------
ezeuba said:
I am not using Sprint network. These are Sprint devices but flashed to Visafone Nigeria where I work. I've flashed about 200 phones altogether and it's only with the Sprint S3s that this occurs. Some other Sprint devices I've flashed work flawlessly, I even did an LG LS970 just yesterday and it's fine, no signal drops. I also noticed that the Mobile Network type changes from EVDO REV A to 1XRTT and back again from time to time, perhaps an antenna issue(?). I've tried ALL the existing Sprint S3 radios but problem still persists. Even though I have the feeling that the connection optimiser is for wifi and 4g, I also disabled it. Still the problem persists.
Click to expand...
Click to collapse
I think you might be right about the antenna issue, because when I switch off my wifi, and run on 3g even through airave, connection still to this day switches from 3g to 1x, and then back again. Now, I always erase optimizer from my phone when flashing a new rom.

Problem seems to have been solved... I used Mobile Odin pro to flash the MB4 modem and since yesterday have not had any signal issues. It seems Mobile Odin does a better job of flashing the modem than the desktop version. Still observing, but it's a relief to see steady signal on this phone now.
Sent from my SPH-L710 using xda app-developers app

[Q] Note II LTE issues and "Not Acti" ??

This is a quick couple of questions for anyone out there that may have a solution. I'm experiencing LTE issues. These issues happened after my note was returned from repair and installed 4.3 OTA. Now, this was a while ago and I recently rooted my device in hopes of fixing the LTE issues, but to no avail. 3G works great but 4G will work sometimes as in: I will have signal but it is very poor in some instances. I've checked in with support and they are of no use. Did all the pertinent resets and reactivations. So I figure the LTE card thats embedded might be the problem. I've checked the APNs and activated the device via WiFi ONLY to see if that would help. And also after my phone was returned I noticed in About Device... in Hardware Version details it has---- Not Acti---- instead of the usual L900.06 or whatever. What may that be? Cause it seems strange in my opinion. Either way 4G LTE works now after rooting and rom'ing than before on stock 4.3 and 4.4.2 where switching to 4G would basically do nothing even though data was being " sent:recieved " . Now 4G works but still loses connectivity randomly when my wife has her S3 and 4G is flawless in the same damn location. LOL. So I know it can't be the towers. Any help is appreciated.