Yes — you keep your regular number active the entire time. The mechanism that makes this possible is dual
SIM, and once you understand how it works, it removes one of the biggest hesitations people have before
buying their first travel eSIM.
How Dual SIM Actually Works
Most modern phones can run two SIM profiles at once — your existing physical SIM (or eSIM) with your home
number, and a second eSIM for your travel data plan. Both stay active simultaneously; you’re not swapping
one out for the other, you’re simply adding a second line alongside your existing one.
What Still Works on Your Home Number vs. What Doesn’t
Calls, text messages, and verification codes sent to your home number continue to work exactly as they did
before, since that line stays active. What doesn’t work well on your home number while abroad is data — using
it for browsing or apps typically triggers expensive roaming charges, which is exactly the cost your travel eSIM
is there to avoid.
Setting Your eSIM as the Default Data Line
This is the one setting that actually matters: in your phone’s cellular settings, make sure your new travel eSIM
— not your home line — is selected as the default for mobile data. Getting this backwards is the most common
way people accidentally rack up roaming charges despite having a perfectly good eSIM installed.
What If Your Phone Only Supports One Active SIM at a Time
Some phones, particularly certain models sold in specific regions, only allow one active line at a time rather
than true dual SIM. If that’s your device, you’ll need to manually switch between your home line and your
travel eSIM depending on whether you need to receive a call or use data — check your specific model’s SIM
capabilities before you travel if you’re unsure.
Frequently Asked Questions
Will I still get 2FA texts on my home number? Yes, as long as your home SIM line stays active and
connected — dual SIM keeps it running independently of your travel data line.
Can people call my home number while I’m abroad? Yes, calls come through normally on your home line.
Depending on your home carrier’s plan, receiving calls abroad may still incur charges even though data
doesn’t — worth checking your specific plan’s terms.
Set up your fiGO eSIM as your data line and keep your home number active for calls and texts — you don’t
have to choose between staying reachable and avoiding roaming charges.
