No access to data whilst abroad

[Allan8765]

I've recently moved over from Three to an unlimited contract with o2.  I was told that this unlimited contract allowed me to use data whilst roaming in both Europe and the US.  I came across to Spain a week ago and was unable to get access to any data services.  I eventually managed to get through to an online assistant who told me to switch my phone (and iPhone 13) off and then on again, which worked and I was able to get access to 5G service and data.  However, yesterday my phone reverted to 3G and not being able to get data services.  I have tried switching the phone off and on again, but with no success this time.  I've tried getting access to an online advisor but there are none available.  Any suggestions? 

[madasaf1sh · Accepted solution]

@Allan8765 

Set your phone to 4G and not 5G and then try again, as 5G access is dependent on the local Spanish Operator. 

Also change your APN to mobile.o2.co.uk

[Allan8765]

Thanks @madasaf1sh.  Can you let me know how I can do these two things please?

Allan

[madasaf1sh]

@Allan8765 
APN Change
https://support.apple.com/en-gb/HT201699

4G

https://support.apple.com/en-gb/guide/iphone/iph3dd5f213/ios

[Allan8765]

Thanks @madasaf1sh!