hi, like the title said, I have a Samsung S20+ SM-G9960 a GSM phone, not working on AT&T a GSM network.
I get an error message upon sim insertion:
"Hi, it's AT&T. The device you tried to activate does not work on our network. We're here to help. Go to Att.com/device for more info and learn how to stay connected."
said phone is working fine on T-Mobile for 2 years but fail to work on AT&T. Anyone knows what to do?
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Hi,
I have a problem with my S5 and I was wondering if I could find any help in this forum. Excuse me for my English and if I am not posting in the correct section, is my first time in the forum.
I live in Lima, Peru and I recently bought an Unlocked Samsung Galaxy S5 model G900W8 from GSM Nation in the USA.
I choose this version of the S5 since it was unlocked for the bands in which my operator (Claro) works here in Peru (2G: 1900Mhz, 3G:850Mhz and 4G: 1900Mhz (Band 2)).
When the phone arrived, I just changed my microSIM card from my old phone to the S5 and it worked without any problem, I was able to make calls and navigate normally. But since my plan was only a 3G plan (since my old phone didn't support 4G) I decided to upgrade to a 4G plan. I went to make the change and my carrier informed I also needed a new microSIM to use a 4G plan, and I did so. But when I plugged in the new microSIM the phone it doesn't work. It shows the message "Emergency calls only" and when I try to call it shows "Not registered on network". I called my carrier for support and they said they have already made the change and activated the new microSIM and that they can't give me any further support since they only sell the Galaxy S5 G900M with their plans.
I don't know what is causing this problem, but I think it must be something related to my carrier that is blocking my phone to access their network but only with the 4G plan and microSIM.
Thanks in advance for your help.
Hi there!
If I had to guess, I'd say its 1 of 3 things,
1. An account problem with your carrier.
2. Your APN setting for the new 4g network are not right or missing. You'd have to find out from your carrier what they should be.
3. Simply a bad sim card.
All of those need to be discussed with your carrier though.
However, feel free to ask in the S5 Questions and Answers section. Perhaps someone there can offer other ideas.
http://forum.xda-developers.com/galaxy-s5/help
Good luck!
Hi there! I'm moving back to India tomorrow after a few years in the US and I'm interested in getting my off-contract Verizon Galaxy Nexus and Sprint Galaxy S3 working in Delhi/NCR. I realize neither will work on a GSM network as the VZW is the I515.9 baseband and the Sprint one lacks a SIM slot, but can I get them running on a local CDMA carrier like MTS or *shudder* Reliance?
I've done some digging online and in here, but I can't seem to find anything about getting either device working on a CDMA network in India other than warnings that some carriers may not activate them if they aren't on their own "approved devices list".
Thanks so much for your help and happy new year!
Can anyone tell me if the phones is region locked? Thanks
i am not sure what you are looking for but i do know that there is a thread on here where someone tried a Verizon SIM in a Tmob and ATT S6 and neither one worked on Verizon.
Generally Verizon phones are SIM unlocked so u can use them on Tom or att but don't expect to get lte coverage since the phones have different bands enabled.
fletch33 said:
i am not sure what you are looking for but i do know that there is a thread on here where someone tried a Verizon SIM in a Tmob and ATT S6 and neither one worked on Verizon.
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Click to collapse
That's because those don't have CDMA radios, and at least the AT&T one is locked. Verizon phones come SIM-unlocked and work with other carriers. If you use a T-Mobile SIM you'll see an "unknown SIM" message, but it will work assuming the bands match. You should be able to get LTE with T-Mobile as most of their network uses band 4.
He means region locked, like usa
geoff5093 said:
That's because those don't have CDMA radios, and at least the AT&T one is locked. Verizon phones come SIM-unlocked and work with other carriers. If you use a T-Mobile SIM you'll see an "unknown SIM" message, but it will work assuming the bands match. You should be able to get LTE with T-Mobile as most of their network uses band 4.
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Anyway to get rid of this message? My g2 I had to root it to get rid of it. I hope I don't have to root the s6 just for that because it gets really anoying just having the icon showing unknown sim the whole time.
Sent from my VS980 4G using XDA Free mobile app
Hello,
my provider is NET10. They support GSM,CDMA, and LTE. I am trying to find a Samsung Gala5y S5 to use at my provider, but I can only find versions for Sprint, T-Mobile, ATT, or Verizon. Sprint, T-Mobile, ATT show that they use only GSM and Verizon CDMA.
Does anyone know what I have to look for on the Galaxy S5 to use all networks (GSM,CDMA, and LTE) ?
Thank you
First step would be to verify with net 10 they are a GSM carrier if I am correct. This being said you could not use Verizon GS5. This would leave sprint to mobile AT&T I would verify with someone who is using one of those devices on NET 10. Sorry I am not more help as I have a Verizon GS5 but hopefully it is a start!
I am thinking of purchasing a Samsung Note 20. If a phone is unlocked I assume it would work on T-Mobile. My question is if I purchase an ATT variant, I know the phone would work with a T-mobile sim, but will VOLTE (wireless calling) work if it an ATT branded phone and wether there's an issues with updates.
Thank you
bobn27613 said:
I am thinking of purchasing a Samsung Note 20. If a phone is unlocked I assume it would work on T-Mobile. My question is if I purchase an ATT variant, I know the phone would work with a T-mobile sim, but will VOLTE (wireless calling) work if it an ATT branded phone and wether there's an issues with updates.
Thank you
Click to expand...
Click to collapse
Basically it should work.
According to the following thread, there might be some issues using 5g though:
At&t Note20 Ultra unlcoked on T-mobile help
I have my at&t note 20 ultra unlocked but have mt T-mobile sim and only internet works! Help. I cannot receive calls or texts- i pop ina Verizon sim and everything works. So I confirm its unlocked. Only with my tmobile sim. Tried apn settings and settings reset and factory reset.
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