Support
Contact Mobile Companion
Got a question about your eSIM? Have a quick look at the help centre first. Still stuck? Message us on WhatsApp with your order number and phone model: a real person replies 24/7, in English or French.
Quick answers
Before you write, browse the answers in the help centre: yours may already be there.
- How to activate an eSIM on iPhoneStep by step, from the QR code to your first connection.
- How to activate an eSIM on AndroidThe steps for Samsung, Pixel and other Android phones.
- Unable to activate your eSIM? What to checkThe quick checks to run, in order.
- How much eSIM data do you need in Japan?Work out what your trip will really use.
- How to remove an eSIM after your tripTurn it off or delete it once you’re home.
Contact support
WhatsApp for a live chat, e-mail or the form to write in your own time.
WhatsApp, 24/7
A real person replies, 7 days a week, in English or French, before and during your trip.
Message us on WhatsAppContact form
For a question that can wait, or to suggest a partnership.
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What to include in your message
To help us sort it out first time, please include:
- the e-mail address of your Mobile Companion account;
- your order number, if you’ve already bought;
- your phone model;
- what’s happening, with a screenshot if you’re writing on WhatsApp.
Leave a message
Prefer to write in your own time? Fill in the form: your message goes to the support team.
Leave us a message
Only your e-mail and your message are required.
Frequently asked questions
My eSIM won’t connect in Japan. What should I do?
Message us on WhatsApp with your phone model and a screenshot: a real person will help you, at any hour. The help centre guide for an eSIM that won’t activate also walks you through the checks step by step.
Which languages does support speak?
English and French. Your travel companions can message us too, in either language.
I haven’t bought yet. Can I still ask a question?
Of course. Support helps you before you buy as well as during your trip: compatibility, choosing a plan, installation.
Can I contact you by e-mail?
Yes: write to contact@mobile-companion.com or use the form on this page. For a live conversation, WhatsApp is the simplest.