In Tanzania: a local physical SIM is the better choice — passport/ID registration is required to buy a local SIM.
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A local physical SIM is the better choice for Tanzania. Tanzania requires passport registration (and sometimes a biometric photo) for local SIMs; eSIM coverage is limited outside cities and popular safari/Zanzibar areas.
Yes — Tanzania requires passport or ID registration to activate a local physical SIM.
Buy your physical SIM at the airport arrivals hall in Tanzania — most major carriers have a kiosk right past immigration, and staff can handle the registration paperwork for you.
Only if you're fine paying your home carrier's international roaming rates — check your plan first, since those can add up fast compared to a local SIM or eSIM.
Airport SIM booths and roaming plans are the expensive way to get online. A Saily eSIM (by the team behind NordVPN) installs on your phone before you fly, activates automatically when you land in Tanzania, and gives you prepaid data at local prices in 190+ countries — no physical SIM, no contract, no surprise bill.
See Saily data plans for Tanzania →Disclosure: if you buy through this link, TravelSmarter may earn a commission at no extra cost to you. It keeps our tools free.