28-06-2018 07:19 - edited 28-06-2018 07:20
28-06-2018 07:35 - edited 28-06-2018 07:39
@BorageCheck your internet settings here. Your APN may be wrong for use of an iphone abroad. It also depends whether you are on contract or PAYG.
If it's idata, you may have to change it to mobile.o2.co.uk (then it will need changing back when you return to the UK)
on 29-07-2018 23:25
I have the same problem
If you have an iPhone, change your apn to "mobile.o2.co.uk"
If any other phone, text the word "ACTIVE" to 2020 or manually input the data settings https://community.o2.co.uk/t5/Android-Devices-Samsung-HTC-Sony/Connecting-Android-Phone-to-Data-Serv...
If still no good, try a manual network selection and choose a different network.
Finally, contact customer services to get your account checked for any internayional bars http://www.o2.co.uk/contactus
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone7 (EE)