Hi ​@JESSCRAMOYSAN,

I am sorry you are having trouble getting your mobile data working in Montenegro, especially as your phone worked normally in Croatia and you have already purchased the relevant roaming add-on.

As roaming is switched on both on your iPhone and your iD Mobile account, please try the following:

• Go to Settings → Mobile Data → Network Selection and turn Automatic off.
• Your iPhone should show the available local networks. Try selecting a different network and then test your mobile data.
• If that does not work, try another available local network.
• Turn Airplane Mode on for around 60 seconds, then switch it off.
• Restart your iPhone and test your mobile data again.

If you are still unable to use data after trying the available local networks, please contact our Live Chat team so they can check your account and roaming settings further.

Live Chat: https://www.idmobile.co.uk/live-chat 

Thanks,

Tashnieka
The iD Mobile Team