Your first week in Tehran: what to sort out first

The first few days set the tone for everything else, so here is a starting list. Add your own tips below.

• A local SIM card. Hamrah-e Aval (MCI) and Irancell are the main networks, and tourist SIMs are sold at Imam Khomeini Airport. You will need your passport.
• Cash. Foreign-issued Visa and Mastercard cards do not work in Iran, so arrive with enough euros or dollars and change them at a licensed exchange office.
• Apps. Snapp or Tapsi for taxis, and Neshan or Balad for maps, both of which work better locally than international alternatives.
• Internet access. Many international sites and apps are blocked, so set up what you need before you arrive.

What would you add, and what did you get wrong in your first week?