How-To

How Do You Temporarily Disable and Re-enable a Travel eSIM Without Deleting It?

Disabling an eSIM line is reversible; deleting its profile is not. Use these iPhone and Android controls when switching between home and travel service.

co:sim TeamSep 26, 20266 min

How-To

How to Use Wi-Fi Calling With a Data-Only Travel eSIM (and Keep Your Number)

You can keep taking calls and texts on your own number abroad while a data-only travel eSIM carries the internet, without roaming charges on either. Here are the exact iPhone and Android steps, the two-line configuration, and the limits worth knowing first.

co:sim Team

Sep 25, 2026

8 min

How-To

Why Does My Travel eSIM Show LTE Instead of 5G?

LTE can be normal when 5G is unavailable, not beneficial, disabled by settings, or unsupported for that roaming profile. Check performance before chasing the icon.

co:sim TeamSep 24, 20267 min

How-To

eSIM Stuck Activating? How to Fix It Step by Step

An eSIM stuck on Activating usually needs a stable connection, the correct data line, or a carrier refresh. Work through these checks without deleting the plan too early.

co:sim TeamSep 23, 20266 min

How-To

Why Is My Phone Using the Home SIM’s Data Instead of the Travel eSIM?

An installed travel eSIM is not always the default data line. Use these iPhone, Pixel, and Galaxy checks to prevent accidental home-line roaming.

co:sim TeamSep 22, 20266 min

How-To

Travel eSIM Hotspot Connected but No Internet? Fix It

A hotspot connection only proves the two devices can see each other. Test the travel eSIM on the host phone first, then check the data line, hotspot settings and receiving device.

co:sim TeamSep 21, 20269 min

How-To

How 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.

co:sim TeamSep 21, 20267 min

How-To

How 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.

co:sim TeamSep 20, 20267 min

How-To

How 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.

co:sim TeamSep 19, 20267 min

How-To

How 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.

co:sim TeamSep 18, 20269 min

How-To

Can 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.

co:sim TeamSep 17, 20268 min