eSIM vs physical SIM: what's actually different

Physical SIMs are the plastic cards we've used for 30 years. eSIMs are the digital version of the same thing — same network technology, no plastic. The difference is logistics, not signal.

Speed and coverage

Identical. Both your physical SIM and an eSIM ride on the same carrier towers, with the same 4G/5G priority. The chip in your phone is the same; only the way it's loaded differs.

Cost

Travel eSIMs almost always win on cost. A local kiosk SIM in a tourist hub usually costs $20–40 for the cheapest tier; comparable Simline plans start at $2 and go up to $40 for unlimited data over a month.

When a physical SIM still wins

• You need a local phone number for calls or SMS.
• You're staying in one country for months and the local pre-paid SIM has a true unlimited plan.
• Your phone doesn't support eSIM (pre-2018 iPhones, budget Androids).