So I have a S10+ running the latest software as of today.
Sim 1 has a three uk pay monthly sim inserted and calls, texts and data has always worked. Sim 2 has a Vodafone Pay Go sim inserted while calls and texts work, data never has worked.
Access Point Names have their correct APN's set:
Sim 1 : 3 (three.co.uk)
Sim 2: Vodafone PAYG Internet (pp.vodavone.co.uk
I have also tried manually adding the APN as per:
If I select sim 1 for mobile data then it works:
If I select sim 2 for mobile data I have no internet access at all:
I have had this issue since day 1 so I know it's not an issue with the current software version. I have checked my vodafone account and there are no bars in place so it should work right? I guess I could try and find another handset to test the Vodafone sim in but if anyone can offer any pointers that would be great!