Database Users

Unlocked S4 unable to register on AT&T network

Hello folks,
A while back, I managed to get AT&T to block network data on my mobile line.
Shortly thereafter, I purchased an unlocked HTC Touch in Europe and experienced no problems receiving/making calls in the U.S. Inserting my AT&T SIM was plug-and-play, for lack of better words.
During a recent trip to Europe, I purchased a Samsung Galaxy S4. After inserting my AT&T SIM, I can not receive/make any calls.
I have bars, get a Voice Mail notification, as well as a 'Not registered to network' message. I am also unable to register to the AT&T networks the phone searches and finds...
Any feedback will be greatly appreciated!

apn settings would not stop registration.. maybe the phone was a black listed imei that went to europe and you bought it and are trying to use it here.
what is the model number.

AlcatrazT2 said:
Hello folks,
A while back, I managed to get AT&T to block network data on my mobile line.
Shortly thereafter, I purchased an unlocked HTC Touch in Europe and experienced no problems receiving/making calls in the U.S. Inserting my AT&T SIM was plug-and-play, for lack of better words.
During a recent trip to Europe, I purchased a Samsung Galaxy S4. After inserting my AT&T SIM, I can not receive/make any calls.
I have bars, get a Voice Mail notification, as well as a 'Not registered to network' message. I am also unable to register to the AT&T networks the phone searches and finds...
Any feedback will be greatly appreciated!
Click to expand...
Click to collapse
you got screwed dude. the phone has bad esn and they blocked the phone already. sorry to hear

Isn't this the "region Locking" that Samsung has been getting flack for lately? If you buy a phone in EU, you have to register it in EU with an EU SIM (Any EU SIM if it an unlocked phone) initially. After that, I think you can then use ATT SIM if the phone is unlocked. It doesn't always work though and people are mad
I am assuming you bought an unlocked phone in EU
Google "SAMSUNG Region lock"

Could be the radio IC blown. That's what happened to my phone, which has a perfectly-fine IMEI (not blacklisted).
See this thread. I'm about to get my phone back from the factory today.

[Q] Unlocking Galaxy Note 3 (AT&T SM-N900A)

I just purchased a Galaxy Note 3 (SM-N900A), full-price, off-contract, from AT&T Wireless. I used an existing GoPhone (prepaid) account/phone number to activate the phone. The phone works (voice calls) with the AT&T SIM. However, I want to use the phone/device on aioWireless. I have a microSIM for aio. I have purchased an unlock code and followed the unlock instructions. I received a "Successful unlock" message after entering the 8 digit network code. However, I cannot make phone calls (or use the data plan) when the aioWireless SIM is installed. When dialing a number with the aio SIM, I get a recorded message that the service has been deactivated, and to contact AT&T.
When I try to verify whether the phone has truly been unlocked by typing *#SIMLOCK# nothing happens. If I then push the CALL button, I then get the message: Connection problem or invalid MMI code.
Any clues what is going on?

stylecraft said:
I just purchased a Galaxy Note 3 (SM-N900A), full-price, off-contract, from AT&T Wireless. I used an existing GoPhone (prepaid) account/phone number to activate the phone. The phone works (voice calls) with the AT&T SIM. However, I want to use the phone/device on aioWireless. I have a microSIM for aio. I have purchased an unlock code and followed the unlock instructions. I received a "Successful unlock" message after entering the 8 digit network code. However, I cannot make phone calls (or use the data plan) when the aioWireless SIM is installed. When dialing a number with the aio SIM, I get a recorded message that the service has been deactivated, and to contact AT&T.
When I try to verify whether the phone has truly been unlocked by typing *#SIMLOCK# nothing happens. If I then push the CALL button, I then get the message: Connection problem or invalid MMI code.
Any clues what is going on?
Click to expand...
Click to collapse
The *#SIMLOCK# code does not work on newer phones so have to find another sim that you verified and works ok in another similar phone.Maybe aioWireless is not activated,does it work ok on other phones? Would recommend a tmobile sim ,because with that if the phone is unlocked then should connect to the network

[Q] Unlocking T-Mobile Note 3 to Verizon

I am attempting to factory unlock a Samsung Galaxy Note 3 originally on the T-mobile network and place a Verizon sim card into the phone.
I have done hours of research to find that I have a few options.
1. I need to purchase an unlock code from a website (that hopefully won't scam me)
2. Contact the carrier to see if they will give me an unlock code
3. Use the service menu on the phone to mess with some "Network Lock" settings
I have spoken with a friend of mine who said that even if I pursue any of these options, the phone will still not function because I am trying to go from a GSM network to a CDMA network. He said the data will function but the phone calls will not come in.
I am in desperate need of some help if anyone can respond. Thanks.

lancer92oc said:
I am attempting to factory unlock a Samsung Galaxy Note 3 originally on the T-mobile network and place a Verizon sim card into the phone.
I have done hours of research to find that I have a few options.
1. I need to purchase an unlock code from a website (that hopefully won't scam me)
2. Contact the carrier to see if they will give me an unlock code
3. Use the service menu on the phone to mess with some "Network Lock" settings
I have spoken with a friend of mine who said that even if I pursue any of these options, the phone will still not function because I am trying to go from a GSM network to a CDMA network. He said the data will function but the phone calls will not come in.
I am in desperate need of some help if anyone can respond. Thanks.
Click to expand...
Click to collapse
AFAIK the t-mobile version only comes unlocked. It should be just a matter of turning on the radios for the verizon bands you want to be able to use and putting in a verizon sim card.

[Q] Is my phone now fully unlocked?

Another question......
When I took my phone to TMobile, the sales rep put in the TMobile micro SIM card and my phone recognized TMobile network.
Does this mean my phone is now unlocked?
When I tried the *#7465625#, I got this USSD Code running message. Later a window popped up and said "Connection Problem or invalid MMI code" I did not get a menu displaying Network lock off screen.
Is there other way I can check to see if my phone is fully unlocked? I only need to use this phone in Europe. I am not interested in switching to another carrier at this point.
Thank you! :laugh:

[Q] HELP,Won't Register on GSM networks

hello i bought one galaxy note 3 (my second one)
i'm having one issue,the first one i bought and i ended up selling had a Bad esn but let me to conect to other networks
such as telcel on mexico,movistar,iusacell and other ones
i bought another one but i don't know why i can't use it on other networks
i tried with the service mode codes but i can't enter to something like the UMTS option on the s4 to turn off the perso sha 256
also i tried installing again the firmware with odin and it continues without signal
when it starts it shows some "sim icon" notification on the status bar and says "phone activation" the sim card is from an unknow source
it 's didn't surprise since i know the verizon phones come GSM unlocked.
maybe if someone knows other form to flash the firmware could help.
i read about some galaxy devices loosing the imei after one update ,if i dial *#06# it shows my device .
if i go to settings and mobile networks and try to select the network(telcel) i won't let me register on the network.
i hope everyone have a nice day and maybe someone could help me.