In general Iran is much safer than many from the West might believe. Most people are genuinelyfriendly and interested to know about you and your country, so leave aside your preconceptionsand come with an open mind. Iran is still a relatively low-crime country, although thefts and muggings have been on the increase in recent years. Keep your wits about you, and take the usual precautions against pickpockets in crowded bazaars and buses.
Emergency services are extensive in Iran, and response times are very good compared to other local regions, 110 is the telephone number of the local Police control center, it is probably easiest to phone 110, as the local police have direct contact with other emergency services, and will probably be the only number with English speaking operators.Other Emergency Services are also available via 115 for Ambulances and 125 for the Fire and Rescue team (these numbers are frequently answered by the Ambulance or Fire crew operating from them, there is little guarantee these men will speak English). The international number 112 is available from cell phones, and will usually connect you to the Police.