Do not assume you can buy a SIM instantly. Check the route for your status first, then decide whether to use Wi-Fi, roaming, eSIM fallback, or an in-person operator visit.
- Use safe Wi-Fi first if mobile data is not ready.
- Open the SIM wizard before visiting an operator.
- Keep document and identity questions inside the guide, not in chat.
Telecom rules for foreign citizens are regulated and can change. Verify the current path before buying or re-registering a SIM.