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I have a galaxy S3 (SGH-I747) originally on Rogers form Canada. I bought an Un lock code and unlocked it. The phone shows signal, makes calls and SMS, but NO 4G and NO network access. (internet pages don't load when disconnected from WiFi)
Under Mobile Network I cannot connect to ATT's network. Does anybody know what I'm doing wrong? Or is there a ROM i need to install after I ROOT the phone? Do I even need to ROOT it? (Sorry in advance, i come from the world of Jailbreaking, but have rooted Droids in the past)
Thx!
I'm not an expert, but you probably need to check your APN settings, and change them to AT&Ts if they aren't already. You can check this in Settings -> More Settings (in Wireless and networks section) -> Mobile Networks -> Access Point Names
I don't know what the AT&T settings should be, but you can probably find it easily enough. Also, you might want to Shut down the phone, remove the SIM, reboot without a sim, then shut down and put it in again to make it read the APN settings from the sim
Try flashing the ATT rom and see if that makes it work to start.
Got It!!!
I had to manually add my APN settings. I was over looking the button on the bottom left to configure it.
Thanks for the help!:cyclops:
Does the SGH-I747 (Rogers version form Canada) pick up LTE on AT&T?
Hi
So I have a Rogers S3 SIM unlocked through that new menu that was found and it was working more or less ok, i go back and forth between rogers and telus with it (work/personal) I tried to get the settings working better while using the Telus SIM, but am having some strange issues, I can't run a Speedtest.net App speed test, just get a "Network Communication issue" error, but a browser one worked, and data flakes out in facebook and some other apps, all APN setting are good, and SpeedTest app works fine on the Rogers SIM.
I tried defaulting out some of the LTE/GSM/HSPA bands to see if it would help and i'm pretty sure i fudged something somewhere, and didn't do a backup as I wasn't sure where this data is held, When using telus the data drops sporadically, and sometimes I get a error instead of the signal bars (circle with a line through it) until i shutdown, pull the sim and power back up.
Will flashing a Rogers ODIN to the phone restore any of this? I wanted to get it fully back to stock so I can just use one of my unlockclient credits on it for a proper sim unlock.
Thanks anyone, and i'll know better than to mess with menus i'm not familiar with, but i'm a long time XDA reader since my HTC Desire days
I just play with my S3 I747 and find out how to temporaly remove RAT restriction.
Click phone then punch code : *#197328640# ->Umts->Debag Screen->Phone Control->Network Lock->Rat_Free_Supporting ON
After you click this you see " Now RAT Free Supporting". Click back button and try setting radio by pressing *#2263#.
RTA will lock back after restarting.
could you explain what "RAT restriction" is and what removing it will provide?
kirkgbr said:
could you explain what "RAT restriction" is and what removing it will provide?
Click to expand...
Click to collapse
Here is a thread that talks about RAT restrictions. It appears to have to do with restricting access to certain bands, but I am swimming in waters that are deeper than my skills will allow.
http://forum.xda-developers.com/showthread.php?t=1189241
norbarb said:
I just play with my S3 I747 and find out how to temporaly remove RAT restriction.
Click phone then punch code : *#197328640# ->Units->Debag Screen->Phone Control->Network Lock->Rat_Free_Supporting ON
After you click this you see " Now RAT Free Supporting". Click back button and try setting radio by pressing *#2263#.
RTA will lock back after restarting.
Click to expand...
Click to collapse
I gonna do a run for this later today to see if it will actually work for allowing band selection and sticking.
It seemed to work for me, but it's only been a couple of minutes so far after turning off LTE. BTW, the first menu is "UMTS", not "Units".
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Any suggestions on how to make these changes permanent without rooting?
Since there is now a known code to lift restrictions until reboot, I hope some dev will figure out a way on stock based roms (both stock and mods), as well as AOSP based, to make it permanent. I have tried AOKP and CM10 in hopes the LTE and 2G toggles would work but no dice with AT&T SGS3.
Anonymously_Unknown said:
Any suggestions on how to make these changes permanent without rooting?
Click to expand...
Click to collapse
Given the issue at hand, it is most likely a deeply embedded setting that will not be available to standard user base (non rooted), henceforth root access or even on a programming level will be needed to make the necessary changes. How the changes will be made available, if it is done, will depend on what was needed to make it permanent. This raises the question of where is this restriction coded into the AT&T SGS3. Is it firmware, ROM, SIM related, Radio? Seriously doubt it is hardware itself since there are ways to get around the restriction.
larryka said:
It seemed to work for me, but it's only been a couple of minutes so far after turning off LTE. BTW, the first menu is "UMTS", not "Units".
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Yes you are corect. I make correction in OP.
Testing RAT unlock now.
norbarb said:
I just play with my S3 I747 and find out how to temporaly remove RAT restriction.
Click phone then punch code : *#197328640# ->Umts->Debag Screen->Phone Control->Network Lock->Rat_Free_Supporting ON
After you click this you see " Now RAT Free Supporting". Click back button and try setting radio by pressing *#2263#.
RTA will lock back after restarting.
Click to expand...
Click to collapse
Testing this method now. So far I am running on 2G. I will give it at least a couple of hours and will update this post accordingly.
Update: I was messing around and decided to save this USSD (the official name of these secret dialer codes) in my contacts. From dialer you can start pressing *#1 and when it appears just press it. This gives quick access should you need to change radios often. I also want to add that instead of going back into *#2263# you can also select the band from *#197328640#. If you want to change it immediately, then once you get the confirmation "Now RAT Free Supporting" press the menu key on the left of the Home button. Select back and repeat again to go back again. Then, instead of choosing Network Lock choose Network Control-->Band Selection. This takes you to the same menu that *#2263# does and you can select accordingly.
@norbarb...perhaps you can update your OP to reflect that you can stay within the original selection instead of *#2263# and just go back twice to access the band selection. It is just one more way of doing things.
I also did the test of rebooting my phone. As mentioned by norbarb, if you have rebooted the RAT restriction is back in place. Regardless of which option you take to the band selection it will show RAT restriction until you follow the OPs steps again to remove restriction. Have not found a way for permanent removal of the restriction yet (I am optimistic and really want this permanent so I will look very hard to find a solution.). Also when I rebooted I had GSM 2G only selected prior and I kept the option upon reboot so only the RAT restriction is reset...not the network band settings.
Update 2: After 4 hours I am still on 2G Edge. I am in a very good LTE location so this is definitely the most promising outlook. I have found that I despite my love for the look of AOSP roms, the inability to turn on 2G at all will keep me with TW for now. Thankfully I do not mind the look of TW and with root, I can kill the Bloatware. I will look at all of the options in the *#197328640# menus and see if there is anything that may can be applied for permanent access. I also wonder if the secret to overriding the lack of options for network choices in *#*#4636#*#* will be here as well as this would more preferable to shut down LTE only.
aybarrap1 said:
I also did the test of rebooting my phone. As mentioned by norbarb, if you have rebooted the RAT restriction is back in place. Regardless of which option you take to the band selection it will show RAT restriction until you follow the OPs steps again to remove restriction. Have not found a way for permanent removal of the restriction yet (I am optimistic and really want this permanent so I will look very hard to find a solution.). Also when I rebooted I had GSM 2G only selected prior and I kept the option upon reboot so only the RAT restriction is reset...not the network band settings.
Click to expand...
Click to collapse
Same here.
Sent from my SAMSUNG-SGH-I747 using xda premium
Isn't the problem with doing this, say if you disable LTE and only select HSPA, it wont go to any 2G networks if you are out of coverage. Because its not on 'automatic', its on HSPA. So if you are out of a service zone of HSPA, then you dont have anything to fall back to.
If only there was a way to disable LTE, and use the other networks 'automatically'.
geoldr said:
Isn't the problem with doing this, say if you disable LTE and only select HSPA, it wont go to any 2G networks if you are out of coverage. Because its not on 'automatic', its on HSPA. So if you are out of a service zone of HSPA, then you dont have anything to fall back to.
If only there was a way to disable LTE, and use the other networks 'automatically'.
Click to expand...
Click to collapse
That is the problem. However, AT&T in their infinite focus on trying to force users to their networks of choice has purposely had the ability to do network selections disabled. Under normal circumstances in android devices the option of network selection is under settings and mobile networks option. This is removed I am sure at AT&T's request. The other way to access this is to use USSD *#*#4636#*#* in dialer and select "Device Information" which will give you an option to choose a network preference. While the USSD works the option to select network preference does not work.
At least with the option to unlock RAT and using USSD *#2263#, it gives some sort of ability to choose a network. For me this is perfect since I want the 2G only due to poor 3G and LTE signals at work. However you are right that it is not convenient if you just want LTE off. For the moment there is no known way to obtain this option on the AT&T SGS3.
aybarrap1 said:
That is the problem. However, AT&T in their infinite focus on trying to force users to their networks of choice has purposely had the ability to do network selections disabled. Under normal circumstances in android devices the option of network selection is under settings and mobile networks option. This is removed I am sure at AT&T's request. The other way to access this is to use USSD *#*#4636#*#* in dialer and select "Device Information" which will give you an option to choose a network preference. While the USSD works the option to select network preference does not work.
At least with the option to unlock RAT and using USSD *#2263#, it gives some sort of ability to choose a network. For me this is perfect since I want the 2G only due to poor 3G and LTE signals at work. However you are right that it is not convenient if you just want LTE off. For the moment there is no known way to obtain this option on the AT&T SGS3.
Click to expand...
Click to collapse
Yep. I also think it's something to do with AT&T network setup. Because on AOSP ROM's we can't toggle LTE either. But the same ROM on a Canadian model phone will work just fine.
Even though the iphone has an LTE toggle. At least I read somewhere that it does.
geoldr said:
Yep. I also think it's something to do with AT&T network setup. Because on AOSP ROM's we can't toggle LTE either. But the same ROM on a Canadian model phone will work just fine.
Even though the iphone has an LTE toggle. At least I read somewhere that it does.
Click to expand...
Click to collapse
It has nothing to do with the network setup...it is the carrier forcing restrictions on their customers. I have had three other android phones (including my wifes) in the last three years. All of them were restricted from choosing the network from stock rom. The moment I uploaded a ROM such as CM or other AOSP Roms I was magically able to do a network select. I even had to Windows phones (6.1 and 6.5) and both of them were stripped but with some registry edits I was able to add the option back to select between 3G/2G and 2g only. It is AT&T's way and they are notorious for it.
On a side note, I would not be surprised if AT&T is the primary corporate network that pushed for this network SIM lock ruling by the Congressional Librarian. Of all the carriers they have the most to lose.
If you want to select multiple bands and still turn lte off..
http://forum.xda-developers.com/showthread.php?p=37334232
Galaxy S III I747
fmllc said:
If you want to select multiple bands and still turn lte off..
http://forum.xda-developers.com/showthread.php?p=37334232
Galaxy S III I747
Click to expand...
Click to collapse
I have been testing this for the last 4 hours and it does seem to work. Went to 2g only area and it switched perfectly to 2G and reverted back to 3g when I left the area. However I am not able to do GSM ONLY (2G only) using this method. You will have to follow the instructions on this thread for that.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click back button and try setting radio by pressing *#2263#.
norbarb said:
I just play with my S3 I747 and find out how to temporaly remove RAT restriction.
Click phone then punch code : *#197328640# ->Umts->Debag Screen->Phone Control->Network Lock->Rat_Free_Supporting ON
After you click this you see " Now RAT Free Supporting". Click back button and try setting radio by pressing *#2263#.
RTA will lock back after restarting.
Click to expand...
Click to collapse
How to set radio by pressing *#2263#?
And what is RTA will lock back after restarting?
So what is the benefit of the ability to change bands?
OKAstro said:
So what is the benefit of the ability to change bands?
Click to expand...
Click to collapse
It could result in battery savings and reduced dropped calls. For instance, I am often in and out of areas with little to no bandwidths under LTE. At default, my phone would always looking for an LTE signal which means my battery takes a pounding. By having my phone only look for 2G/3G, I do not take as large of a battery hit. Besides that, LTE does consume more power. For the most part I leave my phone with LTE off because the data speed is not crucial for me. At home I have a really fast WiFi network so it is better to be on it anyway while at home.
aybarrap1 said:
It could result in battery savings and reduced dropped calls. For instance, I am often in and out of areas with little to no bandwidths under LTE. At default, my phone would always looking for an LTE signal which means my battery takes a pounding. By having my phone only look for 2G/3G, I do not take as large of a battery hit. Besides that, LTE does consume more power. For the most part I leave my phone with LTE off because the data speed is not crucial for me. At home I have a really fast WiFi network so it is better to be on it anyway while at home.
Click to expand...
Click to collapse
OK Thanks. But under Settings/More Networks/Mobile Networks/Network Mode there are 13 "band" combination choices. Do those choices not provide what you''re looking for (i.e.2G/3G)?
I've never changed mine, so I'm curious
So I have always had Lte on my Galaxy but now under mobile network type it says I have UMTS:3. Can anyone tell me what that even means. Also my moms house as well as my dads house both have LTE coverage, yet I can longer get LTE. When I put data on my network changes to HSpAP:15 which I also dont know what means, and yet it says 4G on the status bar. Has anyone ever had any of these problems or could enlighten me on what all of these mean?
Need a little more info, please. What ROM are you using, any mods made to your phone, stuff like that.
Yea, need more info.
I'm going to leave the book here for someone else to write, but when not on LTE, it's not unusual for your phone to read UTMS3 or HPSAP15 and for your phone to read as 4G when on HPSAP15. It's technically still 3G, more like 3G and 1/2, but ATT choose to call it 4G. You will usually see this on ATT stock ROMS and some custom ROMS, but will find it correctly reading as 3G on other custom ROMS.
Sorry for having little info there. But Im on stock rom with stock kernel. Im rooted and have done a few mods to it but thats about it. Its just weird because on ATT LTE map I am clearly surrounded by LTE coverage but am not getting it. Im going to try and put my SIM card in my sisters phone and see if I get LTE on that.
Pikezer1337 said:
Sorry for having little info there. But Im on stock rom with stock kernel. Im rooted and have done a few mods to it but thats about it. Its just weird because on ATT LTE map I am clearly surrounded by LTE coverage but am not getting it. Im going to try and put my SIM card in my sisters phone and see if I get LTE on that.
Click to expand...
Click to collapse
Is that going to be the first time you've removed the SIM card?
Search "how to bypass RAT restriction"on the s3 and bypass it. Then use dialer code *#2263#. Select lte, lte all. This could get your lte back. You could also do the same got gsm and wcdma while your in there. After you finish your selections, reboot.
mrhaley30705 said:
Search "how to bypass RAT restriction"on the s3 and bypass it. Then use dialer code *#2263#. Select lte, lte all. This could get your lte back. You could also do the same got gsm and wcdma while your in there. After you finish your selections, reboot.
Click to expand...
Click to collapse
That's the direction I was going when I asked about the SIM card. Removing the SIM can temporarily remove the RAT restrictions, which can allow the settings to be changed.
The RAT restrictions can be removed first by dialing *#197328640#, then hitting the numbers 11865.
Then you can dial the user code *#2263# then hit 1 for Automatic.
Please do not select lte. You cannot make calls on AT&T yet on LTE. The phone always switches back to 4G or whatever when there is a call, but never LTE). If you select LTE, then it will always be on LTE, and now you will have LTE and no phone calls. You need to select Automatic, so that the phone can dictate to you and call all the shots the way AT&T intended.
I beg to partially differ. You should select all lte, to make sure those bands are active. If they aren't, automatic won't use them.
mrhaley30705 said:
I beg to partially differ. You should select all lte, to make sure those bands are active. If they aren't, automatic won't use them.
Click to expand...
Click to collapse
I'm not always right, but I think I am here. Try it on your phone. Then try making or receiving a call.
Not on Tw ROM atm. But i lost 4g data last week. Had to reselect All Lte. Also reselected All GSM and All WCDMA. Then selected Automatic. After that, everything worked right again. Lte was always lit up, until i made/received a phone call. After call, it went back up to lte.
mrhaley30705 said:
Not on Tw ROM atm. But i lost 4g data last week. Had to reselect All Lte. Also reselected All GSM and All WCDMA. Then selected Automatic. After that, everything worked right again. Lte was always lit up, until i made/received a phone call. After call, it went back up to lte.
Click to expand...
Click to collapse
I'm on touchwiz. I can make calls on everything but LTE. When I set my phone, GSM always stays on Edge, WCDMA always stays on 4G (what ATT calls it) and LTE always stays on 4G LTE. They never change unless its on Automatic.
Your directions.
shortydoggg said:
That's the direction I was going when I asked about the SIM card. Removing the SIM can temporarily remove the RAT restrictions, which can allow the settings to be changed.
The RAT restrictions can be removed first by dialing *#197328640#, then hitting the numbers 11865.
Then you can dial the user code *#2263# then hit 1 for Automatic.
Please do not select lte. You cannot make calls on AT&T yet on LTE. The phone always switches back to 4G or whatever when there is a call, but never LTE). If you select LTE, then it will always be on LTE, and now you will have LTE and no phone calls. You need to select Automatic, so that the phone can dictate to you and call all the shots the way AT&T intended.
Click to expand...
Click to collapse
Thanks for the directions shortydoggg, they were easy to follow. Unfortunately, I still only have Edge,.. I lost 4g after flashing 4.2.. Do you have any other suggestions?
4life2is0good said:
Thanks for the directions shortydoggg, they were easy to follow. Unfortunately, I still only have Edge,.. I lost 4g after flashing 4.2.. Do you have any other suggestions?
Click to expand...
Click to collapse
Check your imei in settings. If it's a zero, you'll need to inject it back in; there's a guide for that.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
I refer to my original instructions, with a little more detail. After bypassing RAT restrictions:
Dialer code *#2263#
Select WCDMA
Select Wcdma all
Back
Select LTE
Select LTE all
Back
Select Automatic
Back key on the phone
Reboot
You must be on a Touchwiz ROM and use the stock phone dialer.
mrhaley30705 said:
I refer to my original instructions, with a little more detail. After bypassing RAT restrictions:
Dialer code *#2263#
Select WCDMA
Select Wcdma all
Back
Select LTE
Select LTE all
Back
Select Automatic
Back key on the phone
Reboot
You must be on a Touchwiz ROM and use the stock phone dialer.
Click to expand...
Click to collapse
I have the same problem since i flashed a custom rom last week and i lost my imei too, i just inject it again but now my data and signal are always down i also fallowed ur instruction but the problem continuous, this phone is driving me crazy :silly:
Hello there, I'm in need of your help again.
My SGH-M919 has a problem, it cannot connect to 3G/LTE (Not even EDGE). My carrier uses the 850 mHz band for GSM and 1900 mHz for UMTS, so the phone should be able to use them. The thing is, it doesn't. It only connects to GPRS and the signal is very erratic and weak (Usually 2-3 bars). Sometimes I get SMSs from my carrier saying that I missed like 5 calls when my phone never rang once. I live in a zone with good 3G coverage, so it's not the signal.
I'm currently rooted on Android 4.4.4 (NH7). I already tried selecting "1900 WCDMA" in the *#2263# service menu but that only causes the phone to lose all the signal (And it's a problem to change it back, without signal the service menu doesn't work and I cannot change the Network Mode in Settings).
I've tried to select "WCDMA only" mode before, but my signal just goes to zero (The circle with the slash) before changing back to "LTE/WCDMA/GSM (Auto connect)" automatically.
I also cannot use the Network Operators option. Using "Search now" makes it search for a few seconds before showing the message "Error while searching for networks". The "Select automatically" one shows the message "Unable to connect. Try later" and then connects back to my carrier (Movistar)
My APNs are configured (They did it themselves when I inserted the SIM, but I've configured them manually before). The SIM card works, I tried it in another phone and it got 3G immediately, I also tried another SIM card on the GS4, but the result was the same. Someone told me to upgrade to the latest firmware (NK2) while someone else told me to flash the MDL modem. (Is that even possible? I read something about KNOX blocking all downgrades after 4.3).
Since I couldn't find any direct solution to the problem, I'm recurring to you.
Thanks.
P.S: I didn't change the LTE Band Preference option in the Service Menu because the last time someone messed with it, my IMEI/Baseband went completely nuts, I thought the EFS got corrupted, but they magically appeared everytime I enabled the Airplane Mode (So I was able to select Automatic in the ServiceMenu and they got fixed). Also, I don't live in a LTE area although once during a very strong thunderstorm, I got 4G for a few minutes before going back to G).
*bump*
Any ideas?
Did you put a check mark in data roaming?
Shortbus-Driver said:
Did you put a check mark in data roaming?
Click to expand...
Click to collapse
I've tried with and without it, it doesn't make a difference anyway.
Does it show you have an ìmei # other than all zeros?
Don't post it just a yes or no.
Shortbus-Driver said:
Does it show you have an ìmei # other than all zeros?
Don't post it just a yes or no.
Click to expand...
Click to collapse
My IMEI is fine, the phone connects to the carrier network but it stays on GPRS (and the signal is always dropping)
Update to full NK2 firmware and see if that will fix it
serio22 said:
Update to full NK2 firmware and see if that will fix it
Click to expand...
Click to collapse
I'll try that later. Will I have to re-root and re-install TWRP after flashing NK2?
I have a similar problem with my M919 on the Tmobile network. Using the *#2263# menu I can not get mine to work on WCDMA (4G) either. I can chose GSM /LTE only and my phone works normally but no 4G signal. If I chose WCDMA I get no signal. I can see it trying to connect and immediately dropping the signal. If I choose any option with WCDMA included it has erratic signal and will lose the signal most of the time when I try to make a call. So basically I have the choices of GSM only or GSM/LTE only. Before I discovered the secret menu I was stuck with GSM only in the phone's settings. This has been going on for months. Tmobile changed my SIM card and it didn't help. I've rooted and unrooted my phone (using autoroot) and even tried different modems (even worse signals) and now am back to stock rooted NK2 firmware and modem. I have given up and decided to get another phone (not an S4). My wife's S3 gets great 4G signals in the same location by the way. I wonder if anyone knows why our phones can't use 4G. I am beginning to think it's a hardware problem but I'm way out of warranty on mine.