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Frequently Asked Questions
Find answers to common questions about eSIMs, compatibility, and how onairsim works.
What is an eSIM?
How do I know if my phone is eSIM compatible?
Can I use an eSIM and a physical SIM at the same time?
How do I activate an eSIM?
What are the advantages of using an eSIM for travel?
What does 'Data-Only' mean?
Can I still receive calls on my primary number?
Can you hotspot or share data from an eSIM?
Why is my eSIM data not working?
Can I have more than one eSIM?
What happens to my unused data?
How much data do I need for my trip?
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