Instructions for calling from the UK to international locations requires special calling codes that allow you to connect to countries outside of the United Kingdom.
Calling out to Iran
Here are the instructions on how to call the country of Canada from the United Kingdom.
To call Iran, dial 0098 and then enter the phone number of the person or location you’re trying to reach. If the phone number is displayed with a leading +98 omit the 98 and replace it with the UK international dialing code of 00. For example:
Phone Number in Iran
Dialed from the United Kingdom
+98 xxx xxx xxxx
00 xxx xxx xxxx
942 121 5988
00 942 121 5988
How to call the UK from Iran
To call a landline or mobile phone in the United Kingdon from Iran, dial 00 44, then dial the UK phone number, minus the leading zero. For example: