Can't turn on mobile data after crossing country border

[simuliks]

Hey, my english not perfect so i hope you understand. So basically, when i got my new phone (m33) and when i cross country border with turned on mobile data or just turn it on in another country, i can't use when i came back to my country, i have to restart the phone to use mobile data, and it happens every time until i got tired of this and decided to make a post about it. On my previous phone (a50) it wasn't like this, it showed that can't connect to the mobile data couse i don't have a plan for mobile data outside the country, but i could still connect to mobile data in my country and didnt need to restart the phone. I hope someone could solve this mistery. 

Additional info: phone purchased less then 1year ago still under the warranty.

[BandOfBrothers]

I totally understand and appreciate that a seamless switch is always preferred. 

The issue could lie with your network and how it handles the switch.

That said some phone's can probably handle the switch better than others.

[simuliks]

Network is the same, phone is not, it doesn't make sense why on one phone works as it should and another not?