Data connection problem on S4? - AT&T Samsung Galaxy S 4 General

I've noticed that the phone does not switch back to LTE correctly when in range of LTE tower(I know where these are because I work on the towers).
When I'm in range of an LTE connection usually my phone will still be on a slower connection, I have to turn on airplane mode, wait a few seconds, then turn off airplane mode to get the LTE connection.
What is up with that?!
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

artofdesign said:
I've noticed that the phone does not switch back to LTE correctly when in range of LTE tower(I know where these are because I work on the towers).
When I'm in range of an LTE connection usually my phone will still be on a slower connection, I have to turn on airplane mode, wait a few seconds, then turn off airplane mode to get the LTE connection.
What is up with that?!
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
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While I cant comment on that directly, I did notice that the S4 data was slow compared to my Motorola ATRIX which is 2 years old. I did side by side speed test in the store and the S4 never went past 2MB download while I was hitting 5MB download. Has me worried a bit.

artofdesign said:
I've noticed that the phone does not switch back to LTE correctly when in range of LTE tower(I know where these are because I work on the towers).
When I'm in range of an LTE connection usually my phone will still be on a slower connection, I have to turn on airplane mode, wait a few seconds, then turn off airplane mode to get the LTE connection.
What is up with that?!
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
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Click to collapse
Play with the apn settings. "Google xda AT&T apn lte settings " this is AT&T fault for not auto putting in the right apn settings for your sim. You might have to set them up manually.
Sent from my GT-I9300 using xda app-developers app

Related

Lose Data Connection

I Lose my data connection several times a day even when having 3 or 4 signal bars for hours at a time.
I had an iphone for 2 years and never had this problem even though the att signal is spotty at best where i live. Once i lose the data connection it refuses to come back even when i have a solid 3 or 4 signal bars for hours plus.
ive tried every combination of using task killers to not using them to toggling airplane mode, toggling apn settings and gps settings and even rebooting the phone, even the reboot doesnt always fix it........
the most successful i have gotten has been to toggle airplane mode on
run a task killer 2 or 3 times and then turn off airplane mode and then toggle the apn switch off and then back on
anybody have any insight ?
this really interferes with my plan to drop the $20 unlimited text package and use google voice. when my edge connection just disappears on me
Nobody?
Sent from my SAMSUNG-SGH-I897 using XDA App
looks like you're alone on this one. go get your phone replaced
Get a new sim card it worked for me
I'm having this issue as well. I'm only noticing it about once a day, but its really irritating.
New SIM is fixing this for people?
Happens to me occasionally but not often enough to be a real issue.
From my Samsung Captivate
So those of you who lost data connection.
How are getting it to come back on? Mine seems to get worse each time. Could there be some ill effects of iphone data package being on my account still?
Sent from my SAMSUNG-SGH-I897 using XDA App
I didn't have this problem until the past few days. I've been traveling in Colorado for those two days, and I've actually had a data connection less time than it's been disconnected. When. I go into the menu and choose About -> Status, it shows "Mobile network type": EDGE, "Mobile connection status": Disconnected. I haven't been able to figure out what's causing it. Sometimes restarting it or turning flight mode on/off gets the data connection going.
Back at home in Austin (a 3g city) I've not experienced it once. Now, in edge data areas of rural Colorado and Durango, I've experienced it most of the time.
You're definitely not alone in this, but unfortunately I don't know how to fix it yet.
Sent from my SAMSUNG-SGH-I897 using XDA App
guys, get your phone or sim card replaced and see if that helps. This is not typical behavior for this phone.
I had my 2 year old sim card replaced and my apparently my account still listed Iphone data plan and not android data plan .. they assured me that was the problem and this would fix it .
....however tonight it still happened.. it was very brief.. but still..
seems to be something with spotty service and only edge. wish there was an option to disable 3g on the phone.
maybe its a bug and getting stuck searching for 3g
there is an option to disable it. check the secret menus thread here on xda. The sim card replacement is for faulty sim card not faulty data on their system. Your new sim could be acting up or it may be your phone. Doesnt hurt to get them both replaced, give it a shot.
lecmmada said:
I didn't have this problem until the past few days. I've been traveling in Colorado for those two days, and I've actually had a data connection less time than it's been disconnected. When. I go into the menu and choose About -> Status, it shows "Mobile network type": EDGE, "Mobile connection status": Disconnected. I haven't been able to figure out what's causing it. Sometimes restarting it or turning flight mode on/off gets the data connection going.
Back at home in Austin (a 3g city) I've not experienced it once. Now, in edge data areas of rural Colorado and Durango, I've experienced it most of the time.
You're definitely not alone in this, but unfortunately I don't know how to fix it yet.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Same problem here almost exactly. Ever since taking a trip to Colorado from Austin, when on edge network the data connection craps out despite the fact I can still make calls and text. At first I thought I was just roaming but then after looking in connection settings it said I was connected to att.
Its a really weird and annoying problem. The way I beat it when the data connection drops is I turn on flight mode, then turn radio back on and then turn wifi on and then off. A really weird procedure but it almost always works.
Anyone found a way to prevent this yet?
Sent from my SAMSUNG-SGH-I897 using XDA App
matthewpapa said:
Same problem here almost exactly. Ever since taking a trip to Colorado from Austin, when on edge network the data connection craps out despite the fact I can still make calls and text. At first I thought I was just roaming but then after looking in connection settings it said I was connected to att.
Its a really weird and annoying problem. The way I beat it when the data connection drops is I turn on flight mode, then turn radio back on and then turn wifi on and then off. A really weird procedure but it almost always works.
Anyone found a way to prevent this yet?
Sent from my SAMSUNG-SGH-I897 using XDA App
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Click to collapse
Try getting a new SIM card. My Nexus One and Motorola Milestone do this (lose data) a few times a day. Same SIM, different devices, and across different ROMS. My Captivate even did it. A new SIM could very well fix this issue for you.

4g getting stuck in upload, data not working.

Every once in a while the data (4g) gets stuck in upload mode and wont quit till i go into airplane mode.
Anyone else getting this? Easy fix? thx
Are you on Rogers?
Sent from my HTC One X using xda premium
Well the flag is canadian and it says Rogers so im thinking yes
Mine does that when I'm in bad service.
Sent from my HTC One X using Tapatalk 2
Yea. Mine does it (only in LTE mode). I was on the phone with Robbers yesterday about it and it seems to be an issue with their craptastic LTE network. As soon as I forced the phone into HSPA mode, the problem disappeared. I turned LTE back on today and it seems ok....for now.
So if your phone starts showing the upload arrow (gets stuck there and you have no data) in LTE mode, disable it in your data settings and reboot, and it should be fine.
I think I may disable LTE anyways. I get better battery life without it, far better signal, and I don't really need it. Any download that requires speed I just use wifi.
They were telling me that it had something to do with the shared data family plans
Sent from my HTC One X using xda premium

LTE Only

How do i make the phone run on
A) LTE only
B) 3G only
C) 1X only
Thanks in advance for any help!
Just data without regular texting or calling?
All data settings are set by changing the radios set up.
You can toggle between these through phone info app.
Sent from club Clean Rom
I don't think you can do that, but phone info app might be a good idea to look at. It might help battery life since the phone is only running one radio rather than two.
i used the phone info app, and when i press lte only it takes me back to the default lte/cdma whatever thing. any ideas how to make it stick to just LTE
You know LTE only would also disable texting/calling? I'm sure it can be done but I'm not sure how.
Sent from my SCH-I535 using Tapatalk 2
thesoldier said:
You know LTE only would also disable texting/calling? I'm sure it can be done but I'm not sure how.
Sent from my SCH-I535 using Tapatalk 2
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Exactly. Our phones are NOT VoLTE (Voice Over LTE). LTE is only used for data at this point. There are no Verizon phones on the market at this point that support VoLTE, although Verizon is reportedly in testing. Ten years from now, Verizon will probably kill (shut down) their 3G and 1X networks entirely, like they did to analog several years back.
Just for information sake, Voice calls on the Verizon network ALWAYS go out over the 1X network (currently). 3G was never designed to handle voice (it is data only), and VoLTE is still in testing at Verizon.
It would be awesome if you could do 1x and 4g radios and disable 3g. You might be able to get more battery life out of the phone. I have a 4200 may battery that lasts me 2 days (48 hours).
Sent from my SCH-I535 using xda app-developers app

Connection dropping

I keep seeing my 3g connection dropping completely. I'll be browsing the web and im not moving at all and all of a sudden the connection is gone. I first thought it had something to do with the connection optimizer but it doesn't seem like that. Did anyone else experience this or know a solution to that?
Sent from my SM-G900P using XDA Premium 4 mobile app
roadrunnrr said:
I keep seeing my 3g connection dropping completely. I'll be browsing the web and im not moving at all and all of a sudden the connection is gone. I first thought it had something to do with the connection optimizer but it doesn't seem like that. Did anyone else experience this or know a solution to that?
Sent from my SM-G900P using XDA Premium 4 mobile app
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i noticed that this was happening when mostly when the phone was going back and forth between 3g and lte. so i changed the mobile network settings to cdma only instead of cdma/lte and it was much steadier.
xxxbasshead said:
i noticed that this was happening when mostly when the phone was going back and forth between 3g and lte. so i changed the mobile network settings to cdma only instead of cdma/lte and it was much steadier.
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When I have it set to cdma only I never get to see lte does yours get lte with cdma turned on only?
Sent from my SM-G900P using XDA Premium 4 mobile app
roadrunnrr said:
When I have it set to cdma only I never get to see lte does yours get lte with cdma turned on only?
Sent from my SM-G900P using XDA Premium 4 mobile app
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by changing it to the CDMA setting you are only going to be on the 3g network.
xxxbasshead said:
by changing it to the CDMA setting you are only going to be on the 3g network.
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So there is really no solution besides going to 3g only. But it really isnt jumping from lte to 3g . It will show 3g and all of a sudden nothing. Sometimes even showing me the little x over the bars.
roadrunnrr said:
So there is really no solution besides going to 3g only. But it really isnt jumping from lte to 3g . It will show 3g and all of a sudden nothing. Sometimes even showing me the little x over the bars.
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This happens in an area with partial Spark.
Mine does same thing because I have 3 towers all equal distance from me. 1 is Spark other 2 are not.
If you travel to another location you probably won't see the issue but in short from talking to some eng. the phone is doing 1 of two things.
A) It see's an LTE signal and as LTE is primary it starts to try to connect to it but before it fully does (thus why you never see LTE icon) it realizes it doesn't support the switched fall back required to allow Spark phones to get calls while on LTE so it kicks you back to 3g. This process continues to repeat :/
B) The phone see's an weak LTE signal, as is primary starts to connect but before it fully does the signal is determined to be to weak and falls back to 3g.
In both cases the phone possibly would never show you the LTE icon as that will only show once fully established and it doing this jumping back and forth causes 3g to go and die where forcing CDMA fixes.
The other downfall to this is it KILLS the battery.
Connecting to WiFi won't help with the battery part either as it still does the jumping around.
Your only option is really force CDMA mode only when in an area like this, for me, this is at home only, or live with it and lower battery life until they upgrade the towers all the way.
bryanu said:
This happens in an area with partial Spark.
Mine does same thing because I have 3 towers all equal distance from me. 1 is Spark other 2 are not.
If you travel to another location you probably won't see the issue but in short from talking to some eng. the phone is doing 1 of two things.
A) It see's an LTE signal and as LTE is primary it starts to try to connect to it but before it fully does (thus why you never see LTE icon) it realizes it doesn't support the switched fall back required to allow Spark phones to get calls while on LTE so it kicks you back to 3g. This process continues to repeat :/
B) The phone see's an weak LTE signal, as is primary starts to connect but before it fully does the signal is determined to be to weak and falls back to 3g.
In both cases the phone possibly would never show you the LTE icon as that will only show once fully established and it doing this jumping back and forth causes 3g to go and die where forcing CDMA fixes.
The other downfall to this is it KILLS the battery.
Connecting to WiFi won't help with the battery part either as it still does the jumping around.
Your only option is really force CDMA mode only when in an area like this, for me, this is at home only, or live with it and lower battery life until they upgrade the towers all the way.
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Thank you for the detailed explanation. I just got off an hour long phone call with sprint with them trying to explain me my phone is defective and my wifes as well. Then when i told them it isn't they started going into the "Yeah its our network" mode but then came back saying she put a ticket in for me and my wife to get the phones repaired. I told her I don't want that to stop worrying about the phone and to send me an air rave. Problem at my house solved lol. They are sending me an air rave
Sent from my SM-G900P using XDA Premium 4 mobile app
roadrunnrr said:
Thank you for the detailed explanation. I just got off an hour long phone call with sprint with them trying to explain me my phone is defective and my wifes as well. Then when i told them it isn't they started going into the "Yeah its our network" mode but then came back saying she put a ticket in for me and my wife to get the phones repaired. I told her I don't want that to stop worrying about the phone and to send me an air rave. Problem at my house solved lol. They are sending me an air rave
Sent from my SM-G900P using XDA Premium 4 mobile app
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You could try turning off or on, depending on whether you have it enabled already, connection optimizer
roadrunnrr said:
Thank you for the detailed explanation. I just got off an hour long phone call with sprint with them trying to explain me my phone is defective and my wifes as well. Then when i told them it isn't they started going into the "Yeah its our network" mode but then came back saying she put a ticket in for me and my wife to get the phones repaired. I told her I don't want that to stop worrying about the phone and to send me an air rave. Problem at my house solved lol. They are sending me an air rave
Sent from my SM-G900P using XDA Premium 4 mobile app
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Hate to share the news but that won't solve your problem, it actually could make it worse as it's now another signal to bounce between.
4G IS always priority when enabled, so regardless of you having a "tower" inside your home now, that does not provide 4G, so if the phone's seeing one that does which is what's causing the problem your issue will remain the same meaning you're forced to put the phone in CDMA only mode still.
The problem isn't with the 3G tower or 3G signal, the problem is the 4G signal being detected but not yet compatible with SPARK due to missing the circuit fall back feature, which the phone doesn't know until it attempts to connect. In some areas where it's partially setup the phone can connect to 4G and just calls won't work, in other areas it's disabled or doesn't exist and this problem happens.
Your solution will simply need to be put the phone in CDMA only mode when in a troubled area only, or just leave it in that mode and have no 4g until everything is upgraded better, or deal with as is.

WiFi connection speed

I am finding my G3 drops from the usual 50 mbps to 3. I have to disconnect from wireless and once I reconnect its back to 50 again. Does anyone else see this. I even flashed back to stock after being rooted and it still happens. All my other devices are fine, just seems like my G3. Thanks
Does the same on mobile data. Usually, toggling airplane mode fixes it. Next update should permanently fix it
mrhaley30705 said:
Does the same on mobile data. Usually, toggling airplane mode fixes it. Next update should permanently fix it
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Yup, same here. It's much more prevalent when switching from Wi Fi to mobile data for me, though. Almost always have to toggle airplane mode to get mobile data to come back.
I don't think it's device specific. I had the same problem on my Note 3, and G2 recently. I haven't had the problem on the TMO G3 I'm using now with an ATT SIM tho.
Sent from my LG-D851
At&t just dumped the 2g frequency in the STL metro per my local retail store. I have noticed there is some struggle from time to time fast switching from WiFi to mobile networks too on the G3. Perhaps because there is one less band to reconnect with in cruddy areas (like my black hold neighborhood lol).
My Nexus 5 was this way as well...less though on my M8.
My WiFi speeds are just fine, and so are my LTE speeds. I'm using a Asus RT-AC68U router at home. It's much faster than my nexus 7 it's getting.

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