Hello: I moved to France for six months and bought the monthly international plan to use on my iPhone XS Max. For the first couple of months the data roaming usually worked OK, but for the past month it has almost never worked at all, though oddly it suddenly worked for about two days last week before quitting again. I can access WiFi with the phone just fine. It's the roaming that won't work. Cellular roaming is definitely turned on. I have powered down and restarted the phone multiple times. The phone shows no needed updates. Can anyone offer advice? I'm in a large city in the south of France, not out in the middle of nowhere. I'm paying a lot of money for data roaming and feeling very very frustrated by the situation. Thanks for any advice you can offer!