Contact
We are an online platform for prepaid eSIMs. We accept messages 7 days a week by email and chat and usually reply within a few hours.
Write to us
The fastest way to get help with orders, activation and billing.
Support email
We usually reply within a few hours, typically within 24 hours on business days.
Live chat
The chat bubble in the bottom-right corner of the site — message us straight from your browser.
- Frequently asked questions (FAQ)
Answers about installation, activation, payments and device compatibility.
- Your account
After signing in you can re-send the eSIM email at any time.
Who we are
Service provider, seller, merchant of record, and first-line support.
TvojeData.cz is operated by Byte development s.r.o. as provider of the prepaid electronic-communications service, seller, and merchant of record. eSIM Access, MobiMatter, and visited mobile networks are wholesale technical suppliers, not the customer's contracting party. Data, any number, calls, and SMS depend on the specific offer.
Legal name
Company ID
Data box
Commercial register
Registered address
Telephone contact
Terms and your rights
Provider terms, withdrawal, complaints, CTU or Czech Trade Inspection Authority dispute routes, privacy, and customer reviews.
Response time and support languages
When and how we get back to you.
- We accept messages 7 days a week by email and chat.
- We usually reply within a few hours, typically within 24 hours on business days.
- Support is available in: Czech, English, German, Ukrainian.