Hsdpa/3g switching issues - Galaxy S III Q&A, Help & Troubleshooting

First off phone is stock and un rooted.
My issue is that the phone will switch to 3g or E so much and then often not switch to H when I use an app requiring Internet so the app won't load anything. Anyone else have these issues or is there a fix? I'm in Australia btw.
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dk125 said:
First off phone is stock and un rooted.
My issue is that the phone will switch to 3g or E so much and then often not switch to H when I use an app requiring Internet so the app won't load anything. Anyone else have these issues or is there a fix? I'm in Australia btw.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
If your phone is unrooted, there are limited things you can do to solve it. If it is rooted, you can actually try to flash different modems for your phone and see which one works best for you or just find out from this forum what modem is best for your carrier.
---------- Post added at 05:28 AM ---------- Previous post was at 05:22 AM ----------
fervorous said:
If your phone is unrooted, there are limited things you can do to solve it. If it is rooted, you can actually try to flash different modems for your phone and see which one works best for you or just find out from this forum what modem is best for your carrier.
Click to expand...
Click to collapse
Sorry, I have looked around and you can actually flash modem through Odin if your phone is unrooted.

Oh really?? Thanks for letting me know, I haven't messed with flashing before so I doubt I will now haha i might wait for official updates...
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I haven't messed with flashing before so I doubt I will now haha i might wait for official updates...
Click to expand...
Click to collapse
Most official modems for my region are terrible, I'll bet your's aren't better. Asian modems have a far greater stability, especially the DXLF3 modem.
You can't do anything wrong when flashing a modem. Just get Odin, head to the modem collection thread, pick your modem and flash away.
My issue is that the phone will switch to 3g or E so much and then often not switch to H
Click to expand...
Click to collapse
Sounds like antenna ping-pong. Basically that means that your carrier keeps moving you from one antenna to the other.
Alternatively, check if you have any Proxy configured in the APN settings as slow proxies can cause the same issue: go to Settings->More->Mobile network->Access point names, choose the one reading 'internet' (or something like that)
Check if any Proxy server IP is filled in. If yes, write it down and delete it from the profile. If Internet doesn't work, reconfigure it.
If it's better, congrats

Oh really! I didn't realise the Asian modems would work well in Australia thought they would be specific to region, obviously not! I will try the flash if nothing else works..
I checked in the settings like u asked but there is nothing under proxy? Should here be an ip is that the possible problem?
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lol. why want change modem? just go to setting, mobile network, network mode, WCDMA only..

ascariz said:
lol. why want change modem? just go to setting, mobile network, network mode, WCDMA only..
Click to expand...
Click to collapse
Wcdma only still switches between 3g and H, trying it now. So it wouldn't make a difference would it?
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dk125 said:
Wcdma only still switches between 3g and H, trying it now. So it wouldn't make a difference would it?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
there is still difference in term of speed between 3g and H. if you want consistent H+, change modem to BWLE5, if you not in LFB based rom.

ascariz said:
there is still difference in term of speed between 3g and H. if you want consistent H+, change modem to BWLE5, if you not in LFB based rom.
Click to expand...
Click to collapse
I'm currently on lf2, being constantly on h+ would drain battery wouldn't it? And h+ wouldn't be available in many areas? Sorry haven't mucked around with this stuff before Thanks for answering but!
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dk125 said:
I'm currently on lf2, being constantly on h+ would drain battery wouldn't it? And h+ wouldn't be available in many areas? Sorry haven't mucked around with this stuff before Thanks for answering but!
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
with this modem, your phone will go straight from 3g to H+, it doesn't even know H anymore. lol. try it to feel the drain on your own.

I had the same problem with lfb modem on stock lfb rom. I fixed it by flashing lf2 modem.
Try it. If it doesn't work flash back the modem you had before.
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Dam, im on lf2 now hoping that lfb was going to be better might try it this wknd and see what it's like
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I had the same problem with lfb modem on stock lfb rom. I fixed it by flashing lf2 modem.
Click to expand...
Click to collapse
LF2 is older than LFB. Are you sure voice calls still work?
I still recommend DXLF3 modem ^^

d4fseeker said:
LF2 is older than LFB. Are you sure voice calls still work?
I still recommend DXLF3 modem ^^
Click to expand...
Click to collapse
Just checked, calls don't work. Flashing LF3 now like you recommended
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Related

Virus?? ..android_secure.img

I got a problem:
I installed H1 modem a while ago and signal got worse and worse every day till now. Now it doesn't even find my home network at all. my old galaxy s2 finds it though. And when i restore a former backup which schould have a different modem within cwm says:
restoring data....android_secure.img not found. Skipping restore of android_secure.
Could this be a virus??
Greetz
No its not a virus, and a cwm backup doesn't backup your modem.
Flash a new one via Odin.
Sent from my GT-I9300 using xda premium
nodstuff said:
No its not a virus, and a cwm backup doesn't backup your modem.
Flash a new one via Odin.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Did do that. Now im on LG8 but same problem. Finds many networks but not my home- network!
Other idea?
Mighty_X said:
Did do that. Now im on LG8 but same problem. Finds many networks but not my home- network!
Other idea?
Click to expand...
Click to collapse
Modem is not Wifi try a different kernel .
jje
JJEgan said:
Modem is not Wifi try a different kernel .
jje
Click to expand...
Click to collapse
Im not talking about wifi network but phone network...
Mighty_X said:
Did do that. Now im on LG8 but same problem. Finds many networks but not my home- network!
Other idea?
Click to expand...
Click to collapse
What do mean by that? Your home has different network?
If mobile network working fine outside your home, then is not your phone fault. Try contact your carrier.
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Arsaw said:
What do mean by that? Your home has different network?
If mobile network working fine outside your home, then is not your phone fault. Try contact your carrier.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Sorry with home network i meant my home carrier (like T- Mobile e.g.)
I tried that already with different modems which have been in use already. -> same Problem- phone finds differnent carrier networks but not my network.
hardwareproblem i can not imagine because it finds other networks. SIM card also works correct (i finds my network in other phones).
One thing that could be problem theoretically: I cut my Sim Card myself from mini sim to micro sim but till now i had no problems what makes me think it cant be my problem...
Ideas?
Mighty_X said:
Sorry with home network i meant my home carrier (like T- Mobile e.g.)
I tried that already with different modems which have been in use already. -> same Problem- phone finds differnent carrier networks but not my network.
hardwareproblem i can not imagine because it finds other networks. SIM card also works correct (i finds my network in other phones).
One thing that could be problem theoretically: I cut my Sim Card myself from mini sim to micro sim but till now i had no problems what makes me think it cant be my problem...
Ideas?
Click to expand...
Click to collapse
Often happens with cut Sims, they work to start with then stop, which network/country are you?
slaphead20 said:
Often happens with cut Sims, they work to start with then stop, which network/country are you?
Click to expand...
Click to collapse
I am on "3" in Austria.
How do you know such problems?
I searched google and did not find much!
Anyone else heard of this behaviour?
Mighty_X said:
Anyone else heard of this behaviour?
Click to expand...
Click to collapse
If you are using a 64kb SIM it tends to happen. Probably its aged and if you did cut it you might have as well damaged the SIM's core.
I'd suggest to get a replacement SIM from your carrier, preferably a Micro SIM and see if that helps.
Mighty_X said:
I got a problem:
I installed H1 modem a while ago and signal got worse and worse every day till now. Now it doesn't even find my home network at all. my old galaxy s2 finds it though. And when i restore a former backup which schould have a different modem within cwm says:
restoring data....android_secure.img not found. Skipping restore of android_secure.
Could this be a virus??
Greetz
Click to expand...
Click to collapse
i also got this problem.It will appear on my screen everytime when i wipe data factory, that totally weird, coz it never happen before..
nodstuff said:
No its not a virus, and a cwm backup doesn't backup your modem.
Flash a new one via Odin.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
As you said, how to flash the modem via odin? any link to guide me?
lala458 said:
As you said, how to flash the modem via odin? any link to guide me?
Click to expand...
Click to collapse
Search for Perka's Stash in Google. You'll find a treasure trove of stuff for S3. :thumbup:
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AT&T Galaxy Note on T-Mobile: (Video) Speedtest.net thread

I thought it might be cool to have a video / screenshot thread of the Note on TMO.
ROM
MODEM
LINK
gibbsrob said:
I thought it might be cool to have a video / screenshot thread of the Note on TMO.
ROM
MODEM
LINK
Click to expand...
Click to collapse
SAUROM_XLA2_RCVII
Tmo_BlazeModem_0331122
http://www.youtube.com/watch?v=TafvCPRtXXs
Blackstar VI
ICS Blaze
http://www.youtube.com/watch?v=uSRrREsoWH0
Both Roms and Modems give me consistant 4-5 mb download speeds
Is there any way to get better upload speeds?
Sent from my SAMSUNG-SGH-I717 using xda premium
Rob4828 said:
Is there any way to get better upload speeds?
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
I've only tested the Blaze modems but I came across a thread somewhere in the i717 Development forum that had build.prop edits that you can apply with a file explorer. I'm gonna give it a shot this weekend.
This is gonna sound dumb, but how do I check which modem I have? I know how to flash roms and all that, but I had to take my Note to a guy to unlock it and flashed a different Modem, but I want to know which one I have lol.
gibbsrob said:
I've only tested the Blaze modems but I came across a thread somewhere in the i717 Development forum that had build.prop edits that you can apply with a file explorer. I'm gonna give it a shot this weekend.
Click to expand...
Click to collapse
Yea i saw it and tried it and the Rom (blackstar) wouldn't boot up.
Christogq said:
This is gonna sound dumb, but how do I check which modem I have? I know how to flash roms and all that, but I had to take my Note to a guy to unlock it and flashed a different Modem, but I want to know which one I have lol.
Click to expand...
Click to collapse
Go to settings, about phone, and baseband version is your modem. There are some modems that show up as unknown like the blaze modem.
Sent from my SAMSUNG-SGH-I717 using xda premium
Rob4828 said:
Go to settings, about phone, and baseband version is your modem. There are some modems that show up as unknown like the blaze modem.
Click to expand...
Click to collapse
Mine says " T989UVLE1.
Is that supposed to be the right one? I'm running the Collective rom. I haven't updated to the new one though. Would one of these other modems make me go faster or is it just a trial and error type of thing?
Christogq said:
Mine says " T989UVLE1.
Is that supposed to be the right one? I'm running the Collective rom. I haven't updated to the new one though. Would one of these other modems make me go faster or is it just a trial and error type of thing?
Click to expand...
Click to collapse
Yes that's a t-mobile modem. You have to try each one and see how it goes but I would recommend the blaze modem because it works the best for me and a lot other people.
Sent from my SAMSUNG-SGH-I717 using xda premium
gibbsrob said:
SAUROM_XLA2_RCVII
Tmo_BlazeModem_0331122
http://www.youtube.com/watch?v=TafvCPRtXXs
Blackstar VI
ICS Blaze
http://www.youtube.com/watch?v=uSRrREsoWH0
Both Roms and Modems give me consistant 4-5 mb download speeds
Click to expand...
Click to collapse
In a good area I get up to 15 down 8 down other areas .
Sent from my Transformer Pad TF300T using xda app-developers app
Rob4828 said:
Yea i saw it and tried it and the Rom (blackstar) wouldn't boot up.
Go to settings, about phone, and baseband version is your modem. There are some modems that show up as unknown like the blaze modem.
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
Use TWRP Recovery:
Factory Reset
Wipe Cache
Wipe Dalvik
Wipe System (Format System)
Then the ROM should boot up.
Are the uploads speeds always like that cuz that maybe the only thing keeping me from switching to t mobile
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Where can I find the download links for the this specific ROM and radio? Thanks in advance.
xsessive said:
Are the uploads speeds always like that cuz that maybe the only thing keeping me from switching to t mobile
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Click to expand...
Click to collapse
NO. T-Mobile download and upload speeds are Incredibe and Insane! This is just what we're able to pull with the port, which isn't bad. It's actually better or equal to Sprint 4G in my area on my NS4G.
I just switched from t-mo due to UL speeds of .1 to .4 mbps using the blaze modem and the foil mod. DL speeds were 5-8, sometimes in the red zone.
Went to Straight talk for the att towers and switched to the latest ucle 6 modem. I am a little disappointed in the speeds. Avg. 3-4 mbps down, and .7 to 1.5 up. The only good thing is call forwarding works and You Mail is functioning- the only thing I missed on t-mo. Will have to think if it's worth it for $15 more a month.

Ungent help....!!!

MY GPS is not working in other words it is not locking my location...
Any help fix plz
Thanks
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rjsmer said:
MY GPS is not working in other words it is not locking my location...
Any help fix plz
Thanks
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
See this app https://play.google.com/store/apps/details?id=com.Double.FasterFix&hl=en
Hi!
I think you should flash another modem, Modem/Radio/Baseband is all the same thing and can be seen by going to Settings - About Phone - Baseband. It's basically a driver which receives and sends Mobile Network signals as well as handling switching between GPRS, 3G, HSDPA etc..
anyway, here is the collection of modems for our s2
also, remember that Usually just flashing and then using the same modem for 3-5 days should tell you how well it performs in your are and with you Mobile Network operator. Please remember that it takes around 2-3 days for a Modem to "settle" and achieve optimum performance, so don't judge how good a Modem is straight after flashing. That's where a lot of people fail when asserting battery drain.
on the sidenote, here is a youtube link on how to flash a modem:
http://www.youtube.com/watch?v=IdqE4DNr6rI
hope this helps,
cheers
saywhatt said:
Hi!
I think you should flash another modem, Modem/Radio/Baseband is all the same thing and can be seen by going to Settings - About Phone - Baseband. It's basically a driver which receives and sends Mobile Network signals as well as handling switching between GPRS, 3G, HSDPA etc..
anyway, here is the collection of modems for our s2
also, remember that Usually just flashing and then using the same modem for 3-5 days should tell you how well it performs in your are and with you Mobile Network operator. Please remember that it takes around 2-3 days for a Modem to "settle" and achieve optimum performance, so don't judge how good a Modem is straight after flashing. That's where a lot of people fail when asserting battery drain.
on the sidenote, here is a youtube link on how to flash a modem:
http://www.youtube.com/watch?v=IdqE4DNr6rI
hope this helps,
cheers
Click to expand...
Click to collapse
Actually after this post last night I flash XXLQ6 Modem and it works...
Thanks for your suggestions... Thts why I love XDA
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rjsmer said:
Actually after this post last night I flash XXLQ6 Modem and it works...
Thanks for your suggestions... Thts why I love XDA
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
No problem
Sent from my GT-I9100 using xda premium

[Q] my s3 keeps dropping signal

hey guys
ive run into a problem i never used to have.
any shop i go in my signal goes to nothing and cant recieve texts or anything
never used to do this, could it be the rom im using
GT I9300
android version 4.1.2
baseband
I9300DXELK1
KERNAL
3.0.31 836582
BUILD
XXEMA2 NEATROM LITE V1.7
any help would be good
simon31uk said:
hey guys
ive run into a problem i never used to have.
any shop i go in my signal goes to nothing and cant recieve texts or anything
never used to do this, could it be the rom im using
GT I9300
android version 4.1.2
baseband
I9300DXELK1
KERNAL
3.0.31 836582
BUILD
XXEMA2 NEATROM LITE V1.7
any help would be good
Click to expand...
Click to collapse
How bad is ur signal? In 3g/4g lte how many bars u have?
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htcubi said:
How bad is ur signal? In 3g/4g lte how many bars u have?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
hey mate
thanks for replying
im new to s3 i rooted it
but it never shows 3G/4G sign
its just shows bars on screen
its probaly me doing summat wrong lol
normally i have 3 or 4 bars on it
never used to do it so i thought it could be the rom
im not sure
is there a setting to change to 3G or 4G
im with vodafone in uk
simon31uk said:
normally i have 3 or 4 bars on it
never used to do it so i thought it could be the rom
im not sure
is there a setting to change to 3G or 4G
im with vodafone in uk
Click to expand...
Click to collapse
Flash a different modem that suits your region and carrier.
http://forum.xda-developers.com/showthread.php?t=1740061
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simon31uk said:
hey mate
thanks for replying
im new to s3 i rooted it
but it never shows 3G/4G sign
its just shows bars on screen
its probaly me doing summat wrong lol
Click to expand...
Click to collapse
Just curious, do you have mobile data enabled?
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yeah i turn on mobile data when i go out at home i use wifi all the time
oae08 said:
Flash a different modem that suits your region and carrier.
http://forum.xda-developers.com/showthread.php?t=1740061
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
thanks mate
trying XELLA now will see what that does
simon31uk said:
thanks mate
trying XELLA now will see what that does
Click to expand...
Click to collapse
sounds like you need your APN settings
go to settings -> > more settings then mobile networks-> APN check and see if you have the right settings for your carrier

How do you test modem ?

Hey, I'm new android user here
I want to know how do you test and compare modem ? By manually look at the signal strength ?
Is there any apps to benchmark it ?
I'm just tired flashing and downloading different modem but not sure which one is the best. Thanks !!
Sent from my GT-I9300
Bump
Anyone?
Sent from my GT-I9300
manually, yes
Glebun said:
manually, yes
Click to expand...
Click to collapse
Oh, I'm wondering is there any "auto" apps that can do it for me.
Thanks for the reply !
Sent from my GT-I9300
SixthSandwich said:
Oh, I'm wondering is there any "auto" apps that can do it for me.
Thanks for the reply !
Sent from my GT-I9300
Click to expand...
Click to collapse
NO. Manually only, flash modems from here http://forum.xda-developers.com/showthread.php?p=28033515 , one by one every couple of days. Watch your signal bars and run few speed tests. Strong signal doesn't mean fast data. It's all depends where are you and who is your network provider. Have a fun
Sent from my GT-I9305 using xda app-developers app

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