Here are the main mobile operators in Iran and how to reach their customer service (short codes usually work only from inside Iran; to call from abroad drop the leading 0 and add +98):

1. Irancell (MTN Irancell)

• From an Irancell SIM (inside Iran): short code 700.
• From other lines / from abroad: 0937‑700‑0000 (international: +98‑937‑700‑0000).
• Official website and app: Irancell.ir and the “ایرانسل من / Irancell” app. (magiran.com)

2. Hamrah‑e‑Aval / MCI (همراه اول)

• From a Hamrah‑e‑Aval SIM (inside Iran): short code 9990 (or the operator’s in‑SIM help code).
• For calls from other networks or from abroad use the published customer numbers shown on MCI’s support pages (drop leading 0 and use +98 for international dialing). Use the “همراه من / Hamrah‑e‑Man” app for account support. (brandradar.org)

3. RighTel (رایتل)

• RighTel publishes regional service‑center phone numbers and a national contact for support (short codes and regional lines vary). Example published contacts include local numbers such as 041‑3335‑9200 and central numbers shown on RighTel pages (international format +98 920 200 0000 for some central lines). Use the “رایتل من / RighTel Man” app or RighTel.ir. (Waze.com)

4. Smaller / other providers and service centers

• There are regional authorized service centers and reseller/agent numbers for each operator; these are listed on operators’ official sites and local directories (use the operator app or website to find the nearest official centre). (BizSouthAsia.com)

Quick tips

• Short codes (e.g., 700, 9990) normally only work when dialed from a SIM on the same network inside Iran; from outside use the full number with +98. (magiran.com)
• If you need help with SIM registration, IMEI/locking, blocking or identity issues, visit an official service centre in person — that’s often required. (magiran.com)
• Using the operator’s official app or verified social channels is often faster than phone for billing, top‑ups and support tickets. (Irancell.ccom.ir)

If you tell me which operator you need (Irancell, Hamrah‑e‑Aval/MCI, RighTel, or a specific regional provider) and whether you’re calling from inside Iran or abroad, I can give the exact international phone number or direct link to their official support page.