How-To
How-ToHow Long Before Your Flight Should You Install Your eSIM?
Installing an eSIM early is safe; activating it early can burn paid validity days. Here's the real difference between the two steps, and when to do each before a flight.
How-ToHow to Compare eSIM Plans Before Buying: A 4-Point Checklist
Before buying an eSIM plan, check four things: data amount, validity period, hotspot/tethering support, and which network it actually runs on. Here's what to look for on any plan page, with co:sim's own listings as an example.
How-ToHow to Switch eSIM Providers Mid-Trip (If Your Plan Runs Out)
If your eSIM data runs out or the connection underperforms mid-trip, you don't need to remove anything. Here's how to install a new eSIM from a different provider alongside it, step by step, with what to check first.
How-ToHow to Cancel or Get a Refund for an eSIM
How eSIM refunds actually work: the install-based eligibility rule, what disqualifies a request, and the steps to request a refund before you buy again.
How-ToCan You Use an eSIM on a Laptop? (Windows PC, Step by Step)
An eSIM only works on a laptop with an actual WWAN cellular modem, not on every Windows 11 PC. Here's how to check if yours qualifies, which models genuinely have the hardware, and the exact steps to install a data-only eSIM.