Develop Bugs

[Q] Samsung Galaxy S3 - AT&T Can only Send/Receive SMS while on a call

Hello!
This morning I suddenly began getting a failed message any time I attempted to send an SMS message. There doesn't appear to be any error code or anything, just an exclamation point next to the message which triggers a new attempt if i touch it.
I assumed it was a passing network error and ignored it for awhile. During my last break at work I realized that still could not send SMS, so I powered my phone off and back on to no avail. I called AT&T tech support, thinking it may have been a provisioning or switch error, they sent me an SMS which came through fine, and I sent a few test SMS while on the line with them which also went through perfectly.
After getting off of the phone with AT&T I discovered my SMS was not working again. Messing around with it later I learned that I can send and receive SMS normally while on a call, and can send MMS messages regardless, but am unable to receive MMS unless I'm on a call. Data is working fine (both AT&T and WiFi) and I can make and receive calls normally.
When I got home from work I called AT&T again. They had no suggestions, but told me they could not help me troubleshoot while I was on the phone needing troubleshooting (which makes perfect sense, but was the only phone available at the time.)
I have since re-flashed my phone to the official factory rom and done a reset to factory settings/deleted all data by following this tutorial here: (XDA won't allow me to link the video, but youtube user appdroid seven, video title "How To Unroot & Factory Reset At&t Samsung Galaxy S III I747", I fouind the video in the thread titled "[ReF} ALL IN ONE NOOBS VIDEO* GUIDES TO ROOT | FLASH | & MORE [Mods this goes in ATT]" post four.)
I am still having the same issue, but am running out of ideas on how to fix it... any help would be greatly appreciated.

I had the same problem. I just figured out how to fix it. Worked on my friends phone too. Both S3s.
I found the below on another site.
1) With phone on, take off back cover and press your SIM card so it releases from the spring. It won't come all the way out as it's blocked by the battery. This seems fine - I didn't bother trying to force it out as I didn't want to break anything...
2) Once you see the message that the SIM card is removed, go to the dialer and dial *#2263#
3) You should see a menu with band selections. The current setting is "Automatic". 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) Press the SIM card back into place until it clicks. For whatever reason the phone will not recognize it until you reboot. Upon reboot you should see your new setting in effect.
I switched to WCDMA ALL... then rebooted. This put it on HSPA only. Then I did the above again and selected automatic and rebooted. LTE came back online and the SMS worked again. No problems since. Hope this helps.
timstapl said:
Hello!
This morning I suddenly began getting a failed message any time I attempted to send an SMS message. There doesn't appear to be any error code or anything, just an exclamation point next to the message which triggers a new attempt if i touch it.
I assumed it was a passing network error and ignored it for awhile. During my last break at work I realized that still could not send SMS, so I powered my phone off and back on to no avail. I called AT&T tech support, thinking it may have been a provisioning or switch error, they sent me an SMS which came through fine, and I sent a few test SMS while on the line with them which also went through perfectly.
After getting off of the phone with AT&T I discovered my SMS was not working again. Messing around with it later I learned that I can send and receive SMS normally while on a call, and can send MMS messages regardless, but am unable to receive MMS unless I'm on a call. Data is working fine (both AT&T and WiFi) and I can make and receive calls normally.
When I got home from work I called AT&T again. They had no suggestions, but told me they could not help me troubleshoot while I was on the phone needing troubleshooting (which makes perfect sense, but was the only phone available at the time.)
I have since re-flashed my phone to the official factory rom and done a reset to factory settings/deleted all data by following this tutorial here: (XDA won't allow me to link the video, but youtube user appdroid seven, video title "How To Unroot & Factory Reset At&t Samsung Galaxy S III I747", I fouind the video in the thread titled "[ReF} ALL IN ONE NOOBS VIDEO* GUIDES TO ROOT | FLASH | & MORE [Mods this goes in ATT]" post four.)
I am still having the same issue, but am running out of ideas on how to fix it... any help would be greatly appreciated.
Click to expand...
Click to collapse

One additional step...
polaris30 said:
I had the same problem. I just figured out how to fix it. Worked on my friends phone too. Both S3s.
I found the below on another site.
1) With phone on, take off back cover and press your SIM card so it releases from the spring. It won't come all the way out as it's blocked by the battery. This seems fine - I didn't bother trying to force it out as I didn't want to break anything...
2) Once you see the message that the SIM card is removed, go to the dialer and dial *#2263#
3) You should see a menu with band selections. The current setting is "Automatic". 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) Press the SIM card back into place until it clicks. For whatever reason the phone will not recognize it until you reboot. Upon reboot you should see your new setting in effect.
I switched to WCDMA ALL... then rebooted. This put it on HSPA only. Then I did the above again and selected automatic and rebooted. LTE came back online and the SMS worked again. No problems since. Hope this helps.
Click to expand...
Click to collapse
I just got this problem after the AT&T update got pushed to my phone yesterday. I followed the steps above, trying to text between each switch of the radios. I found that I could text on "WCDMA All" but not "LTE All". Going to "Automatic" gave me LTE radio back, but MMS/SMS failed to work. However, text did work if I was on a phone call! This got me thinking about the APN settings and whether they were right. Sure enough, AT&T messed with "APN type" on the latest upgrade. It should read "default, mms, supl, hipri" but instead read "default, mms, supl". I created a new APN with the correct APN type, reset the radio to "Automatic" as per the instructions above, and rebooted. I now have LTE and MMS/SMS back!
I hope that this helps!
Now, how do I go about billing AT&T for my lost time?

[Q] How can I get my network reliability AND the ability to send and receive MMS?

I have a Rogers Galaxy Note 2 on the Telus network unlocked using the hardware method posted here previously. Since the unlock I've had some weird data inconsistencies. It wouldn't allow me to do a speedtest; if I refreshed my gmail manually, it would say no connection but if i pressed it an extra time or two, it would work; and scrolling through facebook pictures it would tell me the network was unavailable but the pictures would load anyway. I accepted this as a subtle difference between the two phones.
I couldn't sleep last night and decided to play around with the APN settings. I changed all my APNs to have the bearer "LTE" and to my surprise, I could do speedtests! I thought I had cured everything. But today, my girlfriend tried to send me an MMS, but I couldn't see it at all; if I turned the bearers to unspecified, MMSs worked. I've tried a couple combinations of the two to no avail.
I'm currently using the APN settings given to me by the app Tweakked with the "Unspecified" bearer and MMS works but the data inconsistencies are still there.
Please help. I can tell the hardware functions with Telus, I just need to know if I need to do anything else to get it working smoothly. Thanks in advance!
Clyde

Clydenon said:
I have a Rogers Galaxy Note 2 on the Telus network unlocked using the hardware method posted here previously. Since the unlock I've had some weird data inconsistencies. It wouldn't allow me to do a speedtest; if I refreshed my gmail manually, it would say no connection but if i pressed it an extra time or two, it would work; and scrolling through facebook pictures it would tell me the network was unavailable but the pictures would load anyway. I accepted this as a subtle difference between the two phones.
I couldn't sleep last night and decided to play around with the APN settings. I changed all my APNs to have the bearer "LTE" and to my surprise, I could do speedtests! I thought I had cured everything. But today, my girlfriend tried to send me an MMS, but I couldn't see it at all; if I turned the bearers to unspecified, MMSs worked. I've tried a couple combinations of the two to no avail.
I'm currently using the APN settings given to me by the app Tweakked with the "Unspecified" bearer and MMS works but the data inconsistencies are still there.
Please help. I can tell the hardware functions with Telus, I just need to know if I need to do anything else to get it working smoothly. Thanks in advance!
Clyde
Click to expand...
Click to collapse
Fixed it...weird... THANKS ANYWAYS!

Trouble with sending MMS, and questions on setting up T-Mobile SIM card with G3

Hello all. Not sure if this is the right place to ask this, but no where else has come close to helping me find an answer to my questions.
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Wow, that's quite a wall of text below. I'll try to summarize my three questions here:
Why won't my phone send MMS? It receives and sends SMS (after some tweaking), and receives and sends calls
What network do I choose under the Network operators menu? (RAT : LTE, RAT : WCDMA, or RAT : GSM)
Why is my phone's menus seemingly different from the menus in every G3 guide I've seen?
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I'm having quite a bit of trouble getting my Verizon LG G3 (VS985) to work with my T-Mobile SIM card. Specifically sending text messages. Until a short while ago, I couldn't send any text messages. After playing around in the settings a bit it seems I can now send SMS, but not MMS. I can receive both SMS and MMS, I can receive and send calls, and I can use my data to browse the Internet. I'm utterly confused on how this phone is supposed to be setup and why it isn't working. While in my settings I turned data roaming on, but I tested sending a message after temporarily turning roaming off and it still sent. My APN settings should all be correct (though I'm not sure if there's something special I should set my APN Type as - it's left as "not set" as specified on T-Mobile's documentation).
Another question I have is what network I should choose. When I go deep into the network settings (Settings>More...>Mobile networks>System select> LTE/GSM/UMTS settings>Network operators) and choose "Search networks" it comes up with three T-Mobile networks. They have the following "RAT"s:
RAT : LTE
RAT : WCDMA
RAT : GSM
I'm fairly certain I'm not looking for "WCDMA" but what do I choose between LTE and GSM? As far as my understanding of cellular networks go, my phone should be using a 4G LTE network, but the network (T-Mobile) is also a GSM network. That left me thoroughly confused. Will one of these make my phone work better than the other? Will one let me send MMS?
Questions about T-Mobile network setup and MMS not sending aside, there's one other thing that's bothering me. In almost every troubleshooting guide I've looked up or been walked through, the menus all seem different. I've got software version "VS98535B" (if that's useful for you guys) and Android Version 5.1.1, which I assume is the default or should at least have similar options. However I've encountered two situations where my phone didn't have any type of the option that someone or some guide was trying to show me - once when looking for "WiFi Calling" in my settings (it's not there - "Advanced Calling" is in its steed) and once when looking for some spam setting in my messaging app (also not there). Any thoughts on this? Why does it seem my LG G3 has different menus from every Internet guide's G3?
Sorry to ask so much, but any help will be greatly appreciated!

Okay, WCDMA is 3G or HSPA. That's okay to choose but you'll want to set it to GSM/UMTS/LTE and let it choose it's own network automatically. If it's not letting you send MMS changing the network manually will have no effect. The easy way around this is to change your default text/mms messenger program and that will fix it. Either install Google's messenger app or use one of your choosing that's not the one that was included with the OS.

APN Settings

Hey Everyone,
Been reading here for a long time and can always find information I need - thanks for the hard work. I've come across one I can't fix. I just upgraded from a Nexus 5x to a OnePlus 3. I'm using Appalachian Wireless, many of you may not be familiar with it. Anyhow, I can't access the APN settings. I go to where it should be, but nothing is there. Here's the thing - randomly it just happened to show up a couple times. When I got the option to actually change it, it wouldn't save. Rebooted phone and now the setting isn't there, as in, it completely disappears.
I had to change these settings on my 5x for mobile data to work, it wasn't a problem. Any idea why I can't access the APN settings? Actually it's not a matter of access, I can't even see the option now. Any advice out there? Thanks

If you dont have a supported carrier, the APN settings will not show. If you put a Sim card in the phone that the OP3 will work with, the APN settings will pop up. Happened to me as well. I bought the phone thinking it would work on Verizon and I figured I just needed to change the APN settings and it would start working. It wouldn't show until I put in a Sim card that the phone would work on.
Sent from my ONEPLUS A3000 using XDA-Developers mobile app

I have the 3t and I'm on consumer cellular (so it might not be the same for you), but after what seemed like forever, I found the APN settings in a place I never expected them. In 'Settings,' I went to 'SIM & Network' and clicked on 'SIM 1' (or SIM 2, depending on where you have your card). It was there that I found 'Access Point Names.' Hope this helps.

Hey irlyas,
I have just got my 3T and am also on consumer cellular. Would you mind posting what your APN settings are? I am able to send/receive calls texts and pictures, but when sending or getting standard texts in a group they are sent and received as individual messages. Mucho sadness. I highly doubt it is necessary to use a different chat app than the default one built in, I must have just jacked up a setting somewhere.
Cheers,
// Albert

Not Registered to Network?

Today I lost my ability to make phone calls or do anything with my phone away from WIFI.
If I tried to make a phone call, I'd get a "Not Registered to Network" error message.
I can still do WIFI calling but nothing else away from WIFI connection.
I then went into network settings and chose "manual" for network operators. I was able to restore texting and calling. But I have no data. The options that I see from the scan after choosing "choose network operators manually" are 3-5 choices and they all read "Home". Some of these options give me error messages and others gives "Registered to network" - which then lets me call and text message.
So far I have tried rebooting. Taking out the sim tray and placing the sim card back in. I have tried resetting network settings. I have tried resetting APN to default.
Anyone know of a fix for this Samsung message occurring on the A70?
I am trying to do what I can to avoid resetting to factory defaults.
Thanks.

Others things I have tried:
Placing sim card in the other tray.
Making sure my sim card works in another phone. (It does.)

I fixed the issue.
Restoring APN to defaults or resetting APN, does NOT work, apparently.
I had to manually create and save an APN and enter the appropriate data, as instructed by my carrier's website.
The key data entry was probably adding a website (fake example: "t-mobile.com") to the "APN" entry, which was blank in the default APN that my Samsung was using. I wonder what happened there.

106IFA said:
I fixed the issue.
Restoring APN to defaults or resetting APN, does NOT work, apparently.
I had to manually create and save an APN and enter the appropriate data, as instructed by my carrier's website.
The key data entry was probably adding a website (fake example: "t-mobile.com") to the "APN" entry, which was blank in the default APN that my Samsung was using. I wonder what happened there.
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Click to collapse
Last week an earthquake has occured at Istanbul (5.8) and all the gsm carriers stopped working for hours at whole country. That was interesting. And when you tried to call someone, phone were showing a dialog which was shown to you. And also as you said, peole had to use wifi to call someone via WhatsApp etc.
So, I think the problem you lived may be your gsm carrier's issue and probably they fixed it while you were trying to fix it yourself.

y.erenbektas said:
Last week an earthquake has occured at Istanbul (5.8) and all the gsm carriers stopped working for hours at whole country. That was interesting. And when you tried to call someone, phone were showing a dialog which was shown to you. And also as you said, peole had to use wifi to call someone via WhatsApp etc.
So, I think the problem you lived may be your gsm carrier's issue and probably they fixed it while you were trying to fix it yourself.
Click to expand...
Click to collapse
No. The notion of an outage of service occurred to me but ultimately the fact was my sim card worked just fine in my other phone.
The problem and fix had everything to do with the APN file. I'm just wondering why that APN would change all of sudden.
What I've read about Samsung phones is that this "Not registered to network" is a common problem.
I hope this thread will be useful to someone in the future.