If you have a poor Internet connection while roaming abroad, it can be easier to choose your operator manually. To do this, go to your mobile settings and select another network.
Do you have an iPhone or iPad?
Go to Settings.
Select "Cellular Data".
Select "Select Network".
When the list is displayed, select another operator.
Do you have an Android smartphone or tablet?
Go to "Settings".
Select "Mobile Network".
Select "Operator".
When the list is displayed, select another operator.
