This specs page advises what that phone supports in regards to frequencies.
gsmarena.com/vodafone_smart_n8.
If you Google for the frequencies of the network your looking at you should find what frequencies that network uses.
Unfortunatley that said nothing is guaranteed until you get there.
If your wanting to use a local SIM card then the phone will need unlocking to all networks.
If your wanting to roam then ensure no roaming bar is activated on your account via your myvodafone or customer services.
Current Phone >
Samsung Galaxy s²³ Ultra 512gb Phantom Black.
