Roaming in France - no data

[Jonasp]

I'm on holiday in France with my 100 GB pay monthly Vodafone plan, but get virtually no data when roaming on either SFR or Orange. Every now and then WhatsApp messages and sometimes email drip through but it's  impossible to load  a Web page or use an app. I am having to ask my partner to share her Three PAYG internet via a mobile hot-spot if I need to use the Internet. Three works like a charm in the exact same locations however Vodafone is an utter disaster. What's going on? The problem is NOT the local network as both SFR and Orange have excellent coverage and speeds in the urban locations where I have been. The problem is Vodafone!

[BandOfBrothers]

Check the relevant networks masts to see if an issue is known @Jonasp 

In the interim I can only suggest using Wi-Fi where it's available and if your phone is unlocked to all Network's use a local sim card.

I know you shouldn't have to but sometimes needs must.

I hope this sorts itself out for you.

[PaulAlexWlliams]

I have had exactly the same issue for years, except with me it's no data roaming whatsoever. I have lost count of the number of help chats I've had, all resulting in nothing. I have replaced the SIM, replaced the phone and just recently upgraded my account, all to no effect. Why I didn't leave Vodafone when I had the chance, I don't know, but I'm going to contact the Ombudsman and see if I can cancel my contract citing breach of contract by Vodafone.