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RanaArj27's profile

10 Messages

Wednesday, March 27th, 2024 4:22 AM

AT&T Locked Phone Won't Accept AT&T SIM

I have an old Lumia 830 locked to AT&T. I am trying to cut down on screen time, so I want to use this as my daily phone because the Windows Mobile app store is no longer supported. I have an AT&T SIM card from 2022, and when I put it in the phone, it won't accept it and thinks it's from another carrier. This phone is locked to AT&T, so I don't understand why it isn't accepting an AT&T SIM card. How can I fix this? I've tried unlocking it, but AT&T sends an e-mail saying the unlock failed.

Accepted Solution

ACE - Sage

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117.6K Messages

2 months ago

The Lumia 830 is being excluded from the network because it's not an LTE voice capable device

According to AT&T there are only four Microsoft phones which will still work on their network

I think if you read the error message you are getting, it does not say it is locked to another network. It should be indicating it is not capable of working on AT&T. Probably some gibberish about a 5G network, which really has nothing to do with it. That phone is a 3G voice device and there is no longer a 3G network

(edited)

Community Support

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232.1K Messages

2 months ago

Hey there @RanaArj27,

 

Thank you for reaching out to us! Let's work around your concern and get the help you need!

 

The Community Forums are a public support option where other users, and AT&T, will try and assist with high level support needs. This means we won’t be able to look into account specific concerns. To get the help you need for your unique issue, please review our Contact us : https://www.att.com/support/contact-us/, and choose the best option to reach out to us. You can call, chat, or reach out via social media, and we can review your specific issue and provide you support. If you feel your issue isn’t account specific, and can be answered generally, please let us know, and we’ll be happy to help.

 

Thank you for visiting the AT&T Community Forums.

 

Robin, AT&T Community Forums.

ACE - Expert

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23.9K Messages

2 months ago

Has the SIM card been activated and has current service on it?

10 Messages

2 months ago

Yes, I use the SIM daily on my iPhone. Looking to transfer it. I believe it's for 4G LTE

ACE - Guru

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1.2K Messages

2 months ago

@RanaArj27 

Before you answer back to @formerlyknownas saying "but it's an LTE phone", that doesn't matter.

Many LTE phones from 2014 just aren't compatible with AT&T's implementation of VoLTE. And without that, the thing just won't work.

ACE - Sage

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117.6K Messages

2 months ago

It's LTE for data only. Not for voice

10 Messages

2 months ago

Thank you for this post. I fortunately also have a Lumia 950, which according to the table you showed is still supported. If I put in my AT&T SIM, will it work on that phone? Meaning texts, calls, cellular data, etc. 

ACE - Guru

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1.2K Messages

2 months ago

If it's the exact same model number. I don't know how Lumia model numbers work, if they have different variants for different parts of the world like most other phones. But if it's the same model number, it should work. At least you have a better chance.

But keep expectations low.

ACE - Expert

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23.9K Messages

2 months ago

@formerlyknownas 

Look under Nokia on that list and you will see the 830 is listed 

ACE - Sage

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117.6K Messages

2 months ago

You're correct, It shows up under Nokia.  

So it's possible it's not up to date on software and the only way to update it software is to have AT&T service. But it's blocked from AT&T service because it does not have updated software...

🔄🔄🔄🔄

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