Where the UK mobile number is 07xxx xxxxxx dial either +44 7xxx xxxxxx or 00 44 7xxx xxxxxx.
It doesn't matter which country the other phone is being used in.
To call a UK mobile from a UK landline, you always just dial the UK mobile number, exactly the same way you do when it is in the UK. The network will find the mobile automatically, and the mobile user will pay any applicable surcharges for international roaming.
+34 (including the plus symbol) followed by the 9-digit Spanish number
Dial the UK mobile number in full international format: replace the trunk prefix 0 with telephone country code +44 (including the plus symbol).
Vodaphone
To call a UK-based mobile phone, anywhere in the world that it may be physically located, just dial the UK mobile numberexactly the same way you do when the mobile is in the UK.
To call Spain from any GSM mobile, anywhere in the world, dial +34 and then the 9-digit Spanish number (landline or mobile).
Just as you would call an English landline.
To call a mobile phone when the user is roaming internationally, dial the mobile number exactly the same way you would when the mobile user is at home.
You dial the normal number. The phone network will handling routeing the call to wherever in the world the mobile currently is.
Just dial the UK mobile number. It does not matter that the mobile is roaming in Ireland (or anywhere else); the network will automatically locate the mobile, and the roaming mobile user will pay any applicable roaming surcharges.
In Spanish, their country is called España. Thus ESP. Why do we call it Spain in English,when it`s Espana.
+44 (for the UK), then the full mobile number without the leading zero. for example, to call 07999 999999, you would dial 0044 7999 999999