Can You Make Calls or Send Texts With a Roamix eSIM?
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Roamix eSIM plans are data-only — they don't include a phone number, traditional voice calls, or SMS. That said, staying reachable while traveling is straightforward: keep your home SIM active for calls and texts in Dual SIM mode, and use Roamix data for everything else.
Roamix eSIM Is Data Only
Roamix provides mobile internet access, not a phone number. This is standard for travel eSIM data plans and is part of what keeps them affordable. You're buying access to local data networks, not a local phone number.
What that means practically:
- You cannot place or receive traditional cellular calls through Roamix
- You cannot send or receive SMS texts through Roamix
- You can use any app that works over an internet connection — browsers, maps, streaming, messaging apps, and VoIP calls
How to Still Make Calls While Traveling
The best setup is Dual SIM mode — keep your physical home SIM active and use it for calls, while Roamix handles data.
On iPhone:
- Settings → Cellular → Default Voice Line → set to your home SIM
- Settings → Cellular → Cellular Data → set to Roamix eSIM
On Android (Samsung):
- Settings → Connections → SIM Card Manager
- Set Calls → home SIM; Mobile data → Roamix eSIM
With this configuration, anyone who calls your regular number reaches you normally. You're not paying your carrier's data roaming rates, because Roamix is handling the data. The only potential charge is if your carrier applies fees for receiving calls while roaming — check your plan's terms.
What if my phone only has one SIM slot (eSIM only)?
Some newer phones, particularly US-market iPhone 14 and later models, have no physical SIM tray and are eSIM-only. You can still run Dual SIM using two eSIM profiles. Install the Roamix eSIM as your second profile and keep your home carrier's eSIM as the first. The same assignment rules apply — home eSIM for calls, Roamix eSIM for data.
Free Calling Apps Over Data
Once your Roamix data is active, you have access to every major VoIP and messaging app — and calls over these apps are free:
| App | Voice Calls | Video Calls | Notes |
|---|---|---|---|
| Yes | Yes | Most widely used globally | |
| FaceTime | Yes | Yes | Apple devices only |
| Google Meet | Yes | Yes | Works on all platforms |
| Zoom | Yes | Yes | Good for work calls |
| Signal | Yes | Yes | Encrypted, privacy-focused |
| Telegram | Yes | Yes | Works across all platforms |
These apps use your Roamix data connection, so calls are free from the app's perspective. They count against your data allowance, but voice calls use very little data — a 10-minute WhatsApp call uses roughly 5–8 MB.
Can I Receive Texts Abroad?
Yes, but through your home SIM — not through Roamix. If your phone is in Dual SIM mode with your home SIM active, SMS texts sent to your regular number will still arrive. Your home carrier may charge international roaming fees for incoming SMS depending on your plan, though many carriers include free incoming SMS abroad.
What About Bank OTPs and Two-Factor Authentication?
This is one of the most common travel concerns, and Dual SIM mode solves it cleanly. Your bank OTPs, two-factor authentication codes, and any other SMS messages go to your home number via your home SIM. Your Roamix eSIM provides the data connection your apps need to function. Both work simultaneously — you never have to choose.
The key is making sure your home SIM is active and has signal. If you're in a country where your home carrier has no roaming agreements, SMS delivery may be delayed or unavailable. In those cases, switching to app-based two-factor authentication (Google Authenticator, Authy) is a good idea regardless.
Ready to stay connected without the roaming bill? Browse Roamix plans for your destination and set up the perfect travel configuration.
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