No data roaming in US - PDP authentification failure

[Adam_jobson]

I'm using my iPhone 6 abroad for the first time (in the US) but it won't connect to data services - I can only make calls and texts.

Data roaming is turned on and my phone shows 3G, but if I try to actually use data I get an error: "could not activate mobile data network" and sometimes also "PDP authentification error".

Data worked fine in the UK. It's connected to AT&T in the US, but I have the same problem with all other US networks too.

After a couple of long calls with Vodafone I have:
- restarted
- reset network settings
- manually selected a different network and then switched back
- turned off 4G and Euro Internet
- checked mobile data APN settings
- removed and reinserted SIM
- confirmed no roaming cap / call bar applies

Any other ideas / solutions?

Thanks
Adam

[Sukhi]

Hi Adam_jobson,

It looks like you've done all the troubleshooting steps

One thing you've not mentioned is if you've managed to stay connected to a different network? As the issue may be with the network. 

If you're still not able to connect, please get in touch here.

Thanks,

Sukhi

[Jenn101]

Hi,

Same problem and looking for an answer - roaming was not working in the EU last week whichever way the "EU" toggle set and now will not work in Kuwait. PDP authentication failiure.

Please can someone urgently assist?

Thanks.

[Retired-Laura]

Hi @Jenn101

Welcome to the eForum.

So we can check this for you, get in touch with us here.

Alternatively use out online chat service.

Cheers,

Laura

[jamsterdm]

I saw this on a friends phone but they had used all they're data or something

[ironmike78]

I posted a solution to this on the forum last month. Basically, in settings you need to have your data roaming turned on, but eu Internet turned off. Restart and then should work. I was tearing my hair out for two days on this when visiting Holland last month.