Database Users

Network 3G and H swapping problems...

Hi
I have this problem and i think ive come across a few people with the same frustration.
Which is the constant switching of our galaxy s fone networks frm 3g to H.... Happens so constantly it disrupts and keeps me in limbo so many tyms i cnt even tether properly with this problem!!!!
Please olease is there any fix for this out? Ive looked everywher!!!!! And if not. . . please as a humble request can a dev please create something so that only H frequencies are chosen and are prioritized so that it doesn switch to 3g please?????
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Ha.
Yeah mine does too sometimes.
A way I get past it is to tap back button and select again and it quickly loads up in h.
Sent from my GT-I9000 using XDA App

Could be a problem with XXJVS radio? I go back to XXJVR to compare results.

HSDPA is an extension of 3g. It uses the same frequency. The reason it is switching is to save power for better battery life. It switches to H when you are using the connection, but than switches back to plain 3g when it is idle.

tincmulc said:
HSDPA is an extension of 3g. It uses the same frequency. The reason it is switching is to save power for better battery life. It switches to H when you are using the connection, but than switches back to plain 3g when it is idle.
Click to expand...
Click to collapse
I think there's a problem with it. Uhm however I'm on XXJVR modem for now.

guijarrelson said:
I think there's a problem with it. Uhm however I'm on XXJVR modem for now.
Click to expand...
Click to collapse
I think so too. I'm on odexed jvr and only sometimes it hangs switching between h and 3g.
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logs? or just scarry stories? ;]

$omator said:
logs? or just scarry stories? ;]
Click to expand...
Click to collapse
Mate. What's with your logs obsession????
Too much hassle to log. Hardly ever happens and when it does its an easy fix.
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user experience is well problematic
one will see 3g changing to H and call it a bug or so =)
i belive only on what is there in logs

Yes ofcourse its an extension from 3G to H .... But i am still using the dam network n it still keeps changing to 3g and H is there no way to keep it on one of em?
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farhanino said:
Yes ofcourse its an extension from 3G to H .... But i am still using the dam network n it still keeps changing to 3g and H is there no way to keep it on one of em?
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Click to expand...
Click to collapse
That's just how dataconnection works. .if you want to keep your connection in H-mode constantly, you need to make your phone to ping something for every 3 seconds...like ping -t 3 8.8.8.8 in windows (if I remembered it correctly).
In short: connection is in H-mode as long there is traffic. .
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tincmulc said:
HSDPA is an extension of 3g. It uses the same frequency. The reason it is switching is to save power for better battery life. It switches to H when you are using the connection, but than switches back to plain 3g when it is idle.
Click to expand...
Click to collapse
In my experience (from reading stuff here and observing my phone) it seemed that constant switching between H and 3G drains battery faster than if we could force the phone to use only H. From your post, I understand this is not the case. I never thought that 'switching' was a battery save feature...

I'm using CM7, and although it switches to 3G for a short period of time very infrequently, most of the time I have an 'H' displayed, even when it's idle. I also don't notice any significant battery drain. Maybe my phone is just crazy, though.

I've had this since day 1 with my phone, through many different roms... it's frustrating as all hell and really hurts my battery life and my patience

The switching from 3G to H is not the problem and not the cause of the problem here - it's just the symptom.
It's because data is lagging and stalling further upstream, so the phone is simply returning to idle as it should.
The solution is to change carriers to something that gives more reliable data.

Take a look at http://forum.xda-developers.com/showthread.php?t=837716 for a guide to disable HSDPA for better battery life.

seotaiji said:
Take a look at http://forum.xda-developers.com/showthread.php?t=837716 for a guide to disable HSDPA for better battery life.
Click to expand...
Click to collapse
Very useful info .... I asked for a solution to stay on H i get a reply to disable to SAVE battery life which is clearly not most the prioritized issue here... But thank u.... Any one else with a solution to either stay on H or 3G????
i had a sony x10 mini pro and problems were similar... But then from control panel i selected 3G only ( only options were 2G and 3G) and when it was onnit it NEVER gave up H ... Constantly stayed onnit so if its possible on a fne **** that m preetty sure we cn do it on a galaxy s
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farhanino said:
Very useful info .... I asked for a solution to stay on H i get a reply to disable to SAVE battery life which is clearly not most the prioritized issue here... But thank u.... Any one else with a solution to either stay on H or 3G????
i had a sony x10 mini pro and problems were similar... But then from control panel i selected 3G only ( only options were 2G and 3G) and when it was onnit it NEVER gave up H ... Constantly stayed onnit so if its possible on a fne **** that m preetty sure we cn do it on a galaxy s
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Click to expand...
Click to collapse
Wouldn't the most likely cause of your phone switching back and forth be because you're losing connection? My phone stays in H when I need it, and leaves it when it doesn't. So...

upichie said:
Wouldn't the most likely cause of your phone switching back and forth be because you're losing connection? My phone stays in H when I need it, and leaves it when it doesn't. So...
Click to expand...
Click to collapse
Nope i have constant network on full bars... Keeps working only until the H starts swapping is the time my phone enters limbo and i lose connectivity
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The problem is that it literally hangs between 3g and H changing constantly without loading anything. If I say for example on xda, touch a thread and it does this, it may stay in a changing to and fro for minutes and not load. But if I select thread again as soon as it starts doing it it opens to thread quickly and normal.
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Network gsm signal keeps dropping

Hello I have been having an issue where when connected to wifi and on gsm/Lte in the testing menu the gsm Signal drops to no bars and I'm emergency calls only. When I change to wcdma preferred it's okay. When wifi is off its also okay. I have not changed anything for months apart from dling the latest Franco kernel nightlies. I'm on Rogers from Canada. I don't think it's a network thing since when wifi is off I get Lte
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You're not alone. Alot of other users here have signal problems.

Helderg1984 said:
Hello I have been having an issue where when connected to wifi and on gsm/Lte in the testing menu the gsm Signal drops to no bars and I'm emergency calls only. When I change to wcdma preferred it's okay. When wifi is off its also okay. I have not changed anything for months apart from dling the latest Franco kernel nightlies. I'm on Rogers from Canada. I don't think it's a network thing since when wifi is off I get Lte
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Probably a kernel issue. Find a version that works and stick with it instead of doing the nightlies (which are prone to have things break).

It's not the kernel, I put the stock one back on and the same issue. It's been rainy here the past couple days, I wonder if that plays in.
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Helderg1984 said:
It's not the kernel, I put the stock one back on and the same issue. It's been rainy here the past couple days, I wonder if that plays in.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Maybe something to do with how you setup LTE since the phones really not meant to have it. Maybe a good place to look is in the thread specifically for LTE in the General Section, its pinned to the top of the section.

kzoodroid said:
Maybe something to do with how you setup LTE since the phones really not meant to have it. Maybe a good place to look is in the thread specifically for LTE in the General Section, its pinned to the top of the section.
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Click to collapse
Maybe but lte has been setup for months.
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[How to] Disable LTE or 4G

This is useful if you have a weak LTE signal or just don't need it always on. I found this tutorial on a different website for another galaxy phone and it works on the Note 3.
1. Turn off your phone and take out your sim card.
2. Turn on your phone with no sim card and wait a minute or two for it to turn on and settle down.
3. Go to the dialer and dial *#2263#
You should see a menu with band selections. The current setting is "Automatic".
(You have to use the menu key to select your options by using "Key Input" to type the number you want)
If you switch to "GSM All", you will be EDGE (2G).
If you switch to "WCDMA All", you will be on HSPA+ (3G, though AT&T and others call it 4G).
4) Power off the phone again and put your sim card back. Upon reboot you should see your new setting in effect.

I get a service mode that says rat selection is restricted...
However *#*#4636#*#* will allow you to select whatever band you so choose. Although lte only doesn't allow voice calls
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inmotion said:
I get a service mode that says rat selection is restricted...
However *#*#4636#*#* will allow you to select whatever band you so choose. Although lte only doesn't allow voice calls
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Click to expand...
Click to collapse
If your sim card is out when trying to access the menu it shouldn't say restricted.
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mazdamiata210 said:
If your sim card is out when trying to access the menu it shouldn't say restricted.
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Click to collapse
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Good catch, I completely missed that part of the write up

inmotion said:
I get a service mode that says rat selection is restricted...
However *#*#4636#*#* will allow you to select whatever band you so choose. Although lte only doesn't allow voice calls
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Click to expand...
Click to collapse
I tried the above on my S4 and couldn't get LTE back was stuck on wcdma preferred. Google resulted in a ton of information. Ultimately hard reset needed.
Sent from my SM-N900T using Tapatalk 4

inmotion said:
I get a service mode that says rat selection is restricted...
However *#*#4636#*#* will allow you to select whatever band you so choose. Although lte only doesn't allow voice calls
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Click to expand...
Click to collapse
Yeah that code doesn't work for me. It never worked for my note 2 or note 1 so I wouldn't recommend doing it.
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Limeybastard said:
I tried the above on my S4 and couldn't get LTE back was stuck on wcdma preferred. Google resulted in a ton of information. Ultimately hard reset needed.
Sent from my SM-N900T using Tapatalk 4
Click to expand...
Click to collapse
Sorry about your luck with it, I've never had a problem using it to switch between lte, wcdma, or gsm on my s4 or this note 3. Weird...
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inmotion said:
Sorry about your luck with it, I've never had a problem using it to switch between lte, wcdma, or gsm on my s4 or this note 3. Weird...
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Click to expand...
Click to collapse
Im stuck now, already posted another thread about this in the S4 section.

Works on Note 3
inmotion said:
I get a service mode that says rat selection is restricted...
However *#*#4636#*#* will allow you to select whatever band you so choose. Although lte only doesn't allow voice calls
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Click to expand...
Click to collapse
Thank you inmotion! This code actually worked better for me on my Samsung Galaxy Note 3. I didn't even have to pull out my SIM card or reboot. Just dial in the code, go to Device Info and change the preferred radio network type. It changes the radio on the fly in real time, and can be seen at the top.

Since Android 4.3 and on the option to disable LTE/4G has been removed from all AT&T Android devices.

Solarenemy68 said:
Since Android 4.3 and on the option to disable LTE/4G has been removed from all AT&T Android devices.
Click to expand...
Click to collapse
Actually it was before that. Could not do it on my note 1. Would always get RAT restricted. This was on at&t. Other networks were able to use those codes and make the switch.
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1. Download the free Phone info app from the Google Play Store and install it
2. Choose the Phone Information tab and notice the "Set preferred network type" option at the bottom, marked with an arrow at the right of the drop-down menu
3. Tap on the preferred network listing currently in use, and choose the "CDMA auto (PRL)" option from the drop-down list
4. You should be now maintaining connection to only Verizon's 3G network, and whenever you need to use data, you can switch back to LTE for the duration of it
There are numerous other apps and widgets at the Play Store that claim to do the 2G/3G/4G switch, but many users on Verizon have confirmed the Phone info app to be the only method allowing them to reliably turn off the 4G LTE on their Samsung Galaxy S IIIs.

why would people want to disable LTE? (real question)

pham818 said:
why would people want to disable LTE? (real question)
Click to expand...
Click to collapse
I rather disable 3g so I can stay at lte all the time!

netnerd said:
I rather disable 3g so I can stay at lte all the time!
Click to expand...
Click to collapse
Thats what your phone already does...

pham818 said:
Thats what your phone already does...
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Click to collapse
nope. when 4g lte signal is weak, it drops to "4g".

netnerd said:
nope. when 4g lte signal is weak, it drops to "4g".
Click to expand...
Click to collapse
yeah of course,,,, LTE is not covered in all areas....

Does anyone know how to do a network reset? Because I connect to any Data at all no 4G LTE or 3G none of those. I can't send or receive pictures and go on the internet. I tired taking out Sim card for awhile and still didn't work. Does anyone know what to do? And how to reset network?
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Does anyone know how to do a network reset? Because I connect to any Data at all no 4G LTE or 3G none of those. I can't send or receive pictures and go on the internet. I tired taking out Sim card for awhile and still didn't work. Does anyone know what to do? And how to reset network?
Sent from my SAMSUNG-SM-N900A using Tapatalk

shaqqq said:
Does anyone know how to do a network reset? Because I connect to any Data at all no 4G LTE or 3G none of those. I can't send or receive pictures and go on the internet. I tired taking out Sim card for awhile and still didn't work. Does anyone know what to do? And how to reset network?
Sent from my SAMSUNG-SM-N900A using Tapatalk
Click to expand...
Click to collapse
Reset your APN. Make sure it's att phone
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[Q] Is there any way to set GSM only network

HI there
is there any mod to set GSM only network on note 3. The area I working barely have any 3 g or had a coverage. O2 UK.
Thanks in advance.

In parameters simply turn data off.
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ForeverTroll said:
In parameters simply turn data off.
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Click to collapse
Still on hsdpa

Surprising. I'm speaking about that button. When I turn it off there are no more data.
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Sorry for multiple editing. Go problem with tapatalk to insert the picture above. I hope that's readable now despite this is french
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ForeverTroll said:
Surprising. I'm speaking about that button. When I turn it off there are no more data.
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Click to collapse
What I meant to say I still need the data but the gsm only network I'm after, because in the area i working barely have any 3g or hsdpa network. And because the constant network scanning barely have any network.

Sorry for my misunderstanding. I'm wondering if this is not linked to the setup of your provider. They may decided 2G (Edge) is no more available.
In my case the 2G option is still working and when I set it the GN3 works in Edge :-\

ForeverTroll said:
Sorry for my misunderstanding. I'm wondering if this is not linked to the setup of your provider. They may decided 2G (Edge) is no more available.
In my case the 2G option is still working and when I set it the GN3 works in Edge :-\
Click to expand...
Click to collapse
thanks anyway.

4.4 and Non-VZW carriers

These issues apply to T-Mobile users installing the current build of 4.4 (and possibly other GSM carriers but I don't have an ATT SIM to test). Motorola is aware of the issue. I read these forums pretty thoroughly and I've been answering these questions all over so I figured I'd just put them all one place. Issues as follows:
- Devices with the LTE radio active cannot send SMS
- Devices with the LTE radio active cannot send MMS (Carrier/Settings dependent)
- Devices with the LTE radio active cannot make phone calls and instantly disconnects on call attempt.
Urban Legends:
- Stock tethering does not work - I have personally tested on TMO and know it does work. Yer doin' it wrong.
Fixes
Easiest fix for now if you're on a device running 4.4 and want to... you know... be able to use your phone... is to use phone information and switch the radio mode over to GSM Only (not the auto one). This fix is a little finicky because if the phone realizes it's not running in the mode selected on your mobile networks screen it will override and turn LTE back on if you haven't selected UMTS only.
Full steps are:
Mobile network settings - Change network mode to LTE/GSM/UMTS
Mobile network settings - Select network UMTS Only
Install app linked below
Open Phone Info and select GSM Only
Phone info apk for sideload - http://www.mediafire.com/download/284l17ry2ok1yuk/Phone_info_1.3.apk
I'll update this thread as I discover more issues or as people post issues that can be replicated below.

Thank you. Finally I got the LTE turn off.
I gotta switch the mobile mode to LTE/UMTS/ gsm and select network as UMTS only. Then use phone info choose gsm only.
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vuphongkkk said:
Thank you. Finally I got the LTE turn off.
I gotta switch the mobile mode to LTE/UMTS/ gsm and select network as UMTS only. Then use phone info choose gsm only.
Sent from my XT1080 using xda app-developers app
Click to expand...
Click to collapse
when I use those settings, I only get Edge. I mean, its better than nothing, but still....

DaemonAshra said:
when I use those settings, I only get Edge. I mean, its better than nothing, but still....
Click to expand...
Click to collapse
Not all areas are refarmed for hspa+
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arcanexvi said:
Not all areas are refarmed for hspa+
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Click to expand...
Click to collapse
It was selecting GSM Only in Phone Info. Switched it to GSM auto (PRL) and I got HSPA+ back.
but Seriously dude. thanks for this info. I was tired of using my Moto G while my MAXX was just collecting Dust.

Edited the OP for a more clear fix. Thank you to vuphongkkk for pointing out the UMTS only.

I'm on T-Mobile and live in an HSPA+ refarmed area (NYC), but there are places I go on a regular basis that aren't refarmed. I set it on "WCDMA preferred" and voila, I have both 2 & 3G connectivity, with preference given to 3G.
I can't post links, but this XDA thread explains it in more detail I think: ... showthread.php?t=688492

Vodafone confirmed for anyone wondering.
H+ for UMTS only,
Edge for global.
No Sim adjusting at all

Just popped a sim in today. Getting LTE but really hating the call fail bug. Gotta place the call twice repeatedly to get it through
Maxx'd out Kit Kat

Update: Having major glitches when running LTE, pretty deal breaking for a full switch to tmo right now. Eagerly awaiting the new OTA to see if it fixes it. Seems to have major issues on the HSPA/LTE handoff. How did it function prior to 4.4?
Maxx'd out Kit Kat

On 4.2.2 was working fine, the phone just switch from LTE to 3g itself when you need to make phone call. But I had problem on 4.2.2 that if I connect to WiFi then it'll take awhile to get the LTE back. Normally an hour after out of WiFi range
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vuphongkkk said:
On 4.2.2 was working fine, the phone just switch from LTE to 3g itself when you need to make phone call. But I had problem on 4.2.2 that if I connect to WiFi then it'll take awhile to get the LTE back. Normally an hour after out of WiFi range
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Click to expand...
Click to collapse
Maybe thats the problem I was having? I just ended up with a 4.2.2 phone after my 4.4 got destroyed. LTE wouldnt work for me but I was in the house after switching off wifi...hmmm

Arcanexvi what's the best APN to use for 4.2.2? And do I have to have phone info installed or can I uninstall it? Since I changed all the settings to get hspa+ I forgot what the default settings were. =\ whoops and thanks for all your help so far
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vlcano57 said:
Arcanexvi what's the best APN to use for 4.2.2? And do I have to have phone info installed or can I uninstall it? Since I changed all the settings to get hspa+ I forgot what the default settings were. =\ whoops and thanks for all your help so far
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Click to expand...
Click to collapse
APN: fast.t-mobile.com
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
You can uninstall it if you want. It's extremely small though so no reason to do so unless you just don't want to see the icon. Uninstalling will NOT reset your settings.
Sent from my XT1080 using Tapatalk

Thanks! I messed myself all up though.
In android mobile network settings should I have network mode as global, LTE/CDMA or LTE/gsm/umts?
If its LTE/gsm/umts do I still use gsm only under select network?
And if I leave phone info installed do I have to change anything on there for LTE to work? Phone info seems to change the network selection in the app on its own so I just stopped messing with it. Thanks and sorry to be a pain
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If you on 4.4 you don't have to change anything to have LTE work on your phone. Follow step by step from the beginning of the thread to turn off LTE
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I'm on 4.2.2 and already changed settings. So was curious on what the original settings on 4.2.2 are to get LTE working with APN settings
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4.2.2 rarely get LTE data. Choose network mode as LTE/gsm/UMTS . select network as automatic. Don't use the phone info. If you already use the phone info app in this thread then use it again to switch back to LTE/gsm.. Or the option that has evething.
Remember to add APN fast.t-mobile.com
But as I mentioned, 4.2.2 has some problem with the radio , so it rarely pick up LTE
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Oh well in that case I might as well leave it lol. Thanks for the info
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Just to add another data point, I have a Droid Mini on stock 4.2.2. I'm connecting to t-mobile with the listed apn info, global and auto. I have LTE the vast majority of the time.
Cheers!