Develop Bugs

[Q] "Not Registered On Network" Error

Hi, hoping you guys can help me out:
Current Problem: Bought an unlocked N900T, put in my metroPCS sim, try to dial *228 to switch my plan to that phone's IMEI. Get the "Not Registered On Network" error. Ok. Call metroPCS and have them switch me to that IMEI manually while phone is off and sim is out, still not working, they switched the phone to troubleshooting mode for 2 hours and still couldnt figure it out. Now I'm back on my S3 trying to figure out what's wrong.
Things it cant be:
1) Can't be the sim, it works fine in my S3
2) Can't be the IMEI is bad, checked and looks good
3) Can't be ESN is blocked, checked that
Things i've already tried:
1) ODIN back to pure stock rom (was already there anyway tho)
2) Factory reset
3) Set network to GSM, select automatic registration, never finds service.
I hear there is some Ariza patch to fix network for s3, s4, note 2. dont see one for Note 3. Any ideas would be appreciated. :crying:

You might be in in a At&t area, and its trying to connect to that carrier. Mine does that when I'm not in tmobile area. You might want to uncheck roaming if it's enabled.
Sent from my SM-N900T using XDA Premium 4 mobile app
---------- Post added at 11:34 PM ---------- Previous post was at 11:30 PM ----------
Sound like it's default carrier is wronge. Find network operators and manually set it to metropcs.
Sent from my SM-N900T using XDA Premium 4 mobile app
---------- Post added at 11:44 PM ---------- Previous post was at 11:34 PM ----------
Also check what frequency metropcs is using. And set it correctly. Because if it's not set right your phone will try and connect to the wronge carrier that it's not registered too. It sounds like it's trying to connect to the wrong carrier.
Sent from my SM-N900T using XDA Premium 4 mobile app

T989 out of USA issues: good signal but no network access

I have this T989 unlocked and beeing used with local SIM in Central America, maybe the modem/radio is not full compatible with the local network because in a Building I can get 3 or 4 signal bars but when I send a SMS I get "SMS not send" message, and get "No Network Service" when trying a voice call, why is there 3-4 signal bars without Network Available? Phone come back to normal when I go to an open field. Maybe the T989 Modem/Radio is not as full compatibleas I9100 (international model) modem/Radio? May I flash I9100 Modem/Radio into T989?

First, if you flash that radio you could brick. Do not flash anything not made for your device.
If you're on Jelly Bean, or a higher custom rom version, only the latest T-Mobile or Telus radios will work. Nothing else.
Is likely that your apn settings are wrong or missing. You'll have to Google what your carrier apn settings are and check in mobile network settings.
Also, if your carrier bands aren't supported by the t989, there's nothing you can do... It won't work.
View my profile, I dare you. ?
---------- Post added at 08:54 PM ---------- Previous post was at 08:53 PM ----------
And seeing "bars" is normal.... I have no Sim in mine and get bars.
View my profile, I dare you. ?

KJ said:
First, if you flash that radio you could brick. Do not flash anything not made for your device.
If you're on Jelly Bean, or a higher custom rom version, only the latest T-Mobile or Telus radios will work. Nothing else.
Is likely that your apn settings are wrong or missing. You'll have to Google what your carrier apn settings are and check in mobile network settings.
Also, if your carrier bands aren't supported by the t989, there's nothing you can do... It won't work.
View my profile, I dare you. ?
---------- Post added at 08:54 PM ---------- Previous post was at 08:53 PM ----------
And seeing "bars" is normal.... I have no Sim in mine and get bars.
View my profile, I dare you. ?
Click to expand...
Click to collapse
Yep, I have no sim and see those " signal bars" all the time. I believe T-Mobile told me it was for 911 signal or something.
Sent from my SGH-T989

OK, T989 will only work with modem for T989.
Thank you both!

Fast dormancy on tmobile

Appearently tmo US does support it but its set to unknown....
Should i enable or disable?

Idk. My G4 sleeps like a boss and battery life has been very good so far. Are you having issues?

Enable.. I told you this already!

Where is this setting on the g4?

gsxcorey said:
Where is this setting on the g4?
Click to expand...
Click to collapse
Hidden menu that you access via the dialer.

how do you access it then? LOL any help?

gsxcorey said:
how do you access it then? LOL any help?
Click to expand...
Click to collapse
Try 277634#*# <-- enter this from dialer
I only know that TMO US supports FD. Most US carriers support this, but I haven't done a whole lot of research on other carriers other than TMO US.

you rock. i'm on tmobile and just enabled it. from the little research I did it seems like it's surely a good idea to enable it correct it? really no downside?
---------- Post added at 01:23 AM ---------- Previous post was at 01:19 AM ----------
my only question is i've read if you have it on and your area/network don't support it you can loose more battery life? Does all of tmobile have it in the US or does it go by area and if so how do i check?
BTW Thanks again!

gsxcorey said:
you rock. i'm on tmobile and just enabled it. from the little research I did it seems like it's surely a good idea to enable it correct it? really no downside?
---------- Post added at 01:23 AM ---------- Previous post was at 01:19 AM ----------
my only question is i've read if you have it on and your area/network don't support it you can loose more battery life? Does all of tmobile have it in the US or does it go by area and if so how do i check?
BTW Thanks again!
Click to expand...
Click to collapse
There is no downside as long as your carrier supports it, yeah. FD basically switches your LTE connection to 3G if you're not using the internet. This way it doesn't drain your battery as quickly. The reason why you lose battery if your carrier does NOT support it, is because then your phone ping the network more than it should. All of TMO US LTE areas have this because it's built into the network.

Just curious why T-Mobile doesnt enable this by default on their phones if it is so useful?

I keep getting this error when I type the code in, any help?
Sent from my LG-H811 using XDA Free mobile app

dipole said:
Just curious why T-Mobile doesnt enable this by default on their phones if it is so useful?
Click to expand...
Click to collapse
Oversight.
Sent from my LG-H811 using Tapatalk

csdj92 said:
I keep getting this error when I type the code in, any help?
Sent from my LG-H811 using XDA Free mobile app
Click to expand...
Click to collapse
I got the same on my AT&T variant. BTW, does anyone know if I should turn FD on or off for AT&T/Cricket? Thanks.

Sfkn2 said:
Try 277634#*# <-- enter this from dialer
I only know that TMO US supports FD. Most US carriers support this, but I haven't done a whole lot of research on other carriers other than TMO US.
Click to expand...
Click to collapse
Thanks for this info, I'm trying it out now!

Sfkn2 said:
Try 277634#*# <-- enter this from dialer
I only know that TMO US supports FD. Most US carriers support this, but I haven't done a whole lot of research on other carriers other than TMO US.
Click to expand...
Click to collapse
Thanks, I enabled this yesterday . Question if this uses 3G for phone calls does it affect HD calls or HD calls are also on 3G connections?

I just went through the hidden menu on the H815 model - couldn't find any setting akin to fast dormancy. I can assume then that this is strictly for the T-Mobile variant?

AhsanU said:
I just went through the hidden menu on the H815 model - couldn't find any setting akin to fast dormancy. I can assume then that this is strictly for the T-Mobile variant?
Click to expand...
Click to collapse
Check the field test settings. Should be in there.
---------- Post added at 08:24 PM ---------- Previous post was at 08:24 PM ----------
pvaldeben said:
Thanks, I enabled this yesterday . Question if this uses 3G for phone calls does it affect HD calls or HD calls are also on 3G connections?
Click to expand...
Click to collapse
No affect on your HD calls.

Sfkn2 said:
Check the field test settings. Should be in there.
---------- Post added at 08:24 PM ---------- Previous post was at 08:24 PM ----------
No affect on your HD calls.
Click to expand...
Click to collapse
Under field test, I see:
Modem Settings
LTE Data Test
Browser/Data
WiFi Test
Enhanced Flex Mode
GPS Test
SMS Test
IMS Setting
SmartDM Enable/Disable
DM/FOTA Test
LGODM Logging (LGODL)
QCRIL LOG ADB ON
Fake Language
WVDRM Keybox
Call Test
GPRI
ECC
I don't see fast dormancy after clicking on every single one of those either.
Edit: Found it! Jeez. It's under PDP Settings, derp. I should probably head to bed, thanks lmao

Just enabled this. Thanks for the tip guys!

Sfkn2 said:
There is no downside as long as your carrier supports it, yeah. FD basically switches your LTE connection to 3G if you're not using the internet. This way it doesn't drain your battery as quickly. The reason why you lose battery if your carrier does NOT support it, is because then your phone ping the network more than it should. All of TMO US LTE areas have this because it's built into the network.
Click to expand...
Click to collapse
FD doesnt touch LTE

No mobile data on LTE

Hi,
I have a problem with my LG G3. I can't connect to mobile data, while network is connected to LTE. On LOS 14.1 everything is working fine. But on any stock ROM (v21a, v21c, v30b, v30d, v30n) phone is connected to LTE, but mobile data doesn't work. On CDMA only I have mobile data through 3G+ or H+. Reflashing through LG UP or flashtool doesn't help. Any suggestions? On custom ROMs LTE is working flawlessly, so it is clearly software issue.

Also enabling or disabling fast dormancy didn't help.

I found that the Access Point Name (APN) defined for my carrier on the phone didnt work. I had to manually define it - after which mobile data worked.

The simple answer is - some or all LTE bands are disabled. You have to enable it. To enable it:
1) go to play store and download "Network signal guru".
2) open the app with an active internet connection.
3)tap on the 3 dots on the top right corner.
4) tap on band locking.
5) tap on lte.
6) select all lte bands. Done.
No reboot required. If the network bars still don't show up, then reboot your phone.
Also make sure that you have the proper APN.

I have the same problem. I want to fix it without root.

Cienky02 said:
I have the same problem. I want to fix it without root.
Click to expand...
Click to collapse
All LG phones come with a hidden menu. To enable lte bands there. If it still doesn't work, try resetting network settings.

I bought an LG G3 about 6 months ago. Everything was great and everything was working until I rooted and changed ROMs to Fulmics ROM 5.6. I got back to stock (30b Global), because I didn't like it and I discovered that my LTE isn't working. Like I mean GSM/WCDMA provides me Internet but only (H and 3G), but when I switch to GSM/WCDMA/LTE auto it doesn't even try to connect to the internet. I flashed cyanogen 13, and other AOSP roms and guess what?! I had LTE. So then I thought, that if i have it on custom roms, i need to have it on the stock one. So I flashed about 5 versions of the stock rom and still no luck.
I still have guarantee, but will they do something else then reflashing the stock?
I've also messed about in the Hidden Menu with those fixes that I found on XDA Forums, but still.. No luck at all.
I really want to have fast internet (My carrier supports LTE, and on the box from the phone it has "LTE" on it. Is it possible to be a hardware problem or software? It's soo slow that I can't even upload this.
Also is there any way of fixing this issue without Root?

farhanshaikh671 said:
The simple answer is - some or all LTE bands are disabled. You have to enable it. To enable it:
1) go to play store and download "Network signal guru".
2) open the app with an active internet connection.
3)tap on the 3 dots on the top right corner.
4) tap on band locking.
5) tap on lte.
6) select all lte bands. Done.
No reboot required. If the network bars still don't show up, then reboot your phone.
Also make sure that you have the proper APN.
Click to expand...
Click to collapse
Network Signal Guru require root, but I don't want to root How to fix it through hidden menu?

Magnum44pl said:
Network Signal Guru require root, but I don't want to root How to fix it through hidden menu?
Click to expand...
Click to collapse
Different phones have different codes. Try searching "how to access hidden menu on [phone model no]"
---------- Post added at 09:30 AM ---------- Previous post was at 09:28 AM ----------
Cienky02 said:
I bought an LG G3 about 6 months ago. Everything was great and everything was working until I rooted and changed ROMs to Fulmics ROM 5.6. I got back to stock (30b Global), because I didn't like it and I discovered that my LTE isn't working. Like I mean GSM/WCDMA provides me Internet but only (H and 3G), but when I switch to GSM/WCDMA/LTE auto it doesn't even try to connect to the internet. I flashed cyanogen 13, and other AOSP roms and guess what?! I had LTE. So then I thought, that if i have it on custom roms, i need to have it on the stock one. So I flashed about 5 versions of the stock rom and still no luck.
I still have guarantee, but will they do something else then reflashing the stock?
I've also messed about in the Hidden Menu with those fixes that I found on XDA Forums, but still.. No luck at all.
I really want to have fast internet (My carrier supports LTE, and on the box from the phone it has "LTE" on it. Is it possible to be a hardware problem or software? It's soo slow that I can't even upload this.
Also is there any way of fixing this issue without Root?
Click to expand...
Click to collapse
I too had the exact same problem, until I discovered an app called 'network signal guru'. Go check it out. It'll definitely work.

farhanshaikh671 said:
Different phones have different codes. Try searching "how to access hidden menu on [phone model no]"
---------- Post added at 09:30 AM ---------- Previous post was at 09:28 AM ----------
I too had the exact same problem, until I discovered an app called 'network signal guru'. Go check it out. It'll definitely work.
Click to expand...
Click to collapse
I know how to acces hidden menu. Which option in it I have to change?

farhanshaikh671 said:
Different phones have different codes. Try searching "how to access hidden menu on [phone model no]"
---------- Post added at 09:30 AM ---------- Previous post was at 09:28 AM ----------
I too had the exact same problem, until I discovered an app called 'network signal guru'. Go check it out. It'll definitely work.
Click to expand...
Click to collapse
I tells me that i need to root. I dont want to do that, any way to do it without?

On Fulmics there is also no LTE. LTE works only on AOSP/CM ROMs. What the hell?

Magnum44pl said:
I know how to acces hidden menu. Which option in it I have to change?
Click to expand...
Click to collapse
I'm assuming that you have full network bars and you only cannot access the internet.
Accessing hidden menu comes in use ONLY when no network bars are appearing after changing from GSM/HSPA to LTE and it also requires root.
If you ONLY cannot access the internet but have full network bars after changing to LTE, you have to change the APN in settings. APNs are carried specific, so they differ from carrier to carrier. APNs act like a gateway between the phone and the internet. So, APNs are necessary in order to use the internet.
To get your APN, open Google and search "apn settings for [carrier name] 4g"
---------- Post added at 03:26 PM ---------- Previous post was at 03:20 PM ----------
Magnum44pl said:
On Fulmics there is also no LTE. LTE works only on AOSP/CM ROMs. What the hell?
Click to expand...
Click to collapse
If you're already rooted, use the app 'network signal guru'. Download the app, open the app, tap on the 3 dots on the top right corner of the screen. Tap on band selection. Tap on lte. Enable all lte bands. Done.

farhanshaikh671 said:
I'm assuming that you have full network bars and you only cannot access the internet.
Accessing hidden menu comes in use ONLY when no network bars are appearing after changing from GSM/HSPA to LTE and it also requires root.
If you ONLY cannot access the internet but have full network bars after changing to LTE, you have to change the APN in settings. APNs are carried specific, so they differ from carrier to carrier. APNs act like a gateway between the phone and the internet. So, APNs are necessary in order to use the internet.
To get your APN, open Google and search "apn settings for [carrier name] 4g"
---------- Post added at 03:26 PM ---------- Previous post was at 03:20 PM ----------
If you're already rooted, use the app 'network signal guru'. Download the app, open the app, tap on the 3 dots on the top right corner of the screen. Tap on band selection. Tap on lte. Enable all lte bands. Done.
Click to expand...
Click to collapse
Changing APN's and even after rooting using this app didn't help. I am sending phone to repair, because it's still on guarantee.

Magnum44pl said:
Changing APN's and even after rooting using this app didn't help. I am sending phone to repair, because it's still on guarantee.
Click to expand...
Click to collapse
First try claiming a replacement for your sim card. If it still doesn't work, ask for a replacement for ur phone itself.

With new SIM card the problem still exists.

T-Mobile help

I need your help guys and gals. Just switched to T-Mobile and my wife is the only one having issues. I had the phone unlocked and it does work but intermittently. The data will stop working at random even with correct apn settings. Sometimes the 4g lte indicator will be there sometimes not. Restart sometimes fixes, searching available network helps as well. Any help would be appreciated.
Mod please move to question. Put it in wrong place. Thanks.

Apn settings you need to manually set them
---------- Post added at 01:04 PM ---------- Previous post was at 01:01 PM ----------
https://support.t-mobile.com/docs/DOC-30273
Here is the settings above (link straight from t-mobile)
Also just an FYI in case that doesn't work... there has been issues with 7.0 active on t-mobile
Flash back to 6.0.1 (no root needed) and then set apn settings. However don't do that unless for sure your still having issues after going through everything else.

I have set all the apn settings. She is running 7.0, I will try 6 when she gets home.

Try this
criptix said:
I need your help guys and gals. Just switched to T-Mobile and my wife is the only one having issues. I had the phone unlocked and it does work but intermittently. The data will stop working at random even with correct apn settings. Sometimes the 4g lte indicator will be there sometimes not. Restart sometimes fixes, searching available network helps as well. Any help would be appreciated.
Mod please move to question. Put it in wrong place. Thanks.
Click to expand...
Click to collapse
This is not "S7 Active" specific issue. It is overall S7 issue on Android 7.0. You don't need to downgrade to 6.0.1. Just delete all the APNs (make it EMPTY!) -> Restart phone -> Add APN -> Restart. Problem solved.
---------- Post added at 05:26 AM ---------- Previous post was at 05:23 AM ----------
If you get poor LTE coverage on T-mobile, you should switch to 4G instead. That way, you'll get better reception + you'll save little bit of battery life.
Dial *#*#4636#*#* on your phone dialer -> 'Device Information' -> 'Set Preferred Network Type:' -> Select 'WCDMA preferred' or 'Global auto (PRL)'
I used to get 1 bar on LTE, now I'm getting full coverage on UMTS. I'm on MINT SIM (they are T-mobile MVNO).