What happens?
No signal/network connection at all?
Nothing works - calls, texts, data?
What if you do a manual search for networks?
Can you see any local network and connect to it?
What make and model of phone is it?
If it's an iPhone then you might need to try this:
https://community.48months.ie/t5/Most-Popular-Questions/iPhone-abroad-issue/td-p/36862
Hope this helps.
