Terms and Conditions
Terms of the anonymous prepaid eSIM service, payment, delivery, complaints, and dispute resolution.
Effective 2026-08-19 · explicitly approved unstated-speed mode
Provider, contract, and technical supply
Who provides the service and who supplies its wholesale technical delivery.
- The provider of the publicly available prepaid electronic communications service, seller, and payment recipient is Byte development s.r.o., company ID 21661235, Příkop 843/4, Zábrdovice, 602 00 Brno, registered in the Commercial Register maintained by the Regional Court in Brno, section C, file 139696. Telephone: +420 608 270 754, email: support@tvojedata.cz. Byte accepts the order and payment, delivers the eSIM, and handles support and complaints.
- The service contract is concluded electronically between the customer and Byte when Byte confirms the order after successful payment; no paper signature is required. These terms, the specific offer, and the contract summary shown before payment form the contract.
- eSIM Access and MobiMatter, together with visited mobile-network operators where applicable, provide wholesale technical supply. They are not the seller, merchant of record, or the customer's direct contracting party.
- A one-off package is paid before supply, does not renew automatically, and ends as stated in the offer. The Flex contract is concluded for an indefinite term and contains recurring exact 30-day prepaid service periods: each new period is paid before it is supplied; without successful payment no new package is created and no debt arises for an unsupplied period. Future bundle renewal can be switched off at any time before the next payment, and the paid 30-day period continues to its end.
- The Flex price or terms for future 30-day periods may change only within the contract and the law. We will give a clear notice in text form at least one month before the change takes effect. Unless the change is exclusively beneficial, purely administrative with no adverse effect, or directly required by law, you may switch off renewal or terminate the contract without cost; a period already paid for is unchanged.
- Data, validity, countries and networks, FUP, hotspot, speeds, and any number, calls, or SMS follow the specific offer. Unless the offer says so, do not assume that every eSIM is data-only.
- If a wholesale supplier marks an offer with a KYC or identity-verification flag, we disclose it in the offer and contract summary. TvojeData does not use that flag as a checkout gate, does not collect or verify civil identity, and attempts fulfilment without identity verification. If the upstream rejects activation after payment without identification, the service is not supplied and we do not ask the customer for an identity document. Byte promptly initiates the refund and its accounting reconciliation; if the automatic refund does not complete for technical reasons, Byte completes it manually without asking for an identity document.
- The contract is governed by Czech law, without prejudice to mandatory consumer rights of the consumer's country of habitual residence. Jurisdiction of courts and administrative or supervisory authorities follows mandatory law.
Service parameters and quality
Binding offer parameters and mobile-network factors.
- The offer detail and contract summary shown before payment state data volume, validity, coverage, activation, price, renewal, FUP, hotspot, and any calls, SMS, or telephone number. Audited numeric speeds are stated when available for the exact SKU. In the explicitly approved unstated-speed mode, no numeric speed is promised or contractually guaranteed, and no value is inferred from 3G/4G/5G labels or community measurements.
- A generic 3G/4G/5G label is not a guarantee of a specific speed. Only the parameters in the specific offer and contract summary are binding.
- Actual speed and availability depend on coverage, signal, device, technology, visited-network load, roaming, and upstream traffic management. Byte accepts the complaint; remedies follow the offer, Byte terms, and mandatory law.
- Byte and its technical suppliers may manage traffic only transparently, non-discriminatorily, proportionately, and for no longer than necessary on the basis of objectively different technical requirements; equivalent traffic must be treated equally. Measures beyond that framework may be used only as permitted by binding law, to protect network integrity and security, or to address impending, temporary, or exceptional congestion.
- Before a specific SKU is offered, Byte must approve a versioned open-internet profile based on written upstream evidence. The profile must state the traffic-management measures applied, their reason and duration, and their practical effect on service quality, privacy, and personal-data protection. An unknown, generic, or merely inferred fact keeps the plan out of new sales.
- The same profile must state every data-volume and speed limitation and its practical effect on access to content, applications, and services — such as browsing, file transfer, streaming, video calls, and latency-sensitive services — and every other service optimised for a specific quality level, including its possible effect on the availability and general quality of internet access. If no such measure or other service applies, that fact must be confirmed in writing for the exact SKU; missing evidence cannot be replaced by an assumption and the offer is not enabled.
Pre-contract information under Section 63 of the Czech Electronic Communications Act
General rules for the prepaid service; the specific numerical and product details are stated in the offer and contract summary before payment.
- Before payment, the contract summary states the main characteristics, price, duration, and renewal of the specific service. It gives substantiated numeric advertised and estimated maximum download and upload speeds when available; in the explicitly approved unstated-speed mode it instead states clearly that no numeric speed is promised or contractually guaranteed. It also states any agreed minimum quality level or expressly says when no separate minimum quality level is agreed.
- A plan described as unlimited can be newly ordered only where the offer states the exact high-speed allowance, its reset period, and the speed after exhaustion, or expressly and demonstrably confirms that no such restriction applies. An unknown or merely generic FUP keeps the plan out of sale.
- For a time- or volume-limited bundle, the specific offer states the available way to monitor remaining volume and validity, the availability of warnings, any delay in wholesale usage data, and the consequence of exhaustion or FUP. No overage charge, new bundle, or debt arises without a separate advance purchase.
- A one-off service ends on exhaustion or expiry as stated in the offer. Flex renewal may be switched off without a termination fee in account management or by contacting support@tvojedata.cz before the next 30-day period is charged; the paid period runs to its end, and statutory defect and withdrawal rights remain unaffected.
- Standard TvojeData bundles do not include porting an existing telephone number or a reloadable cash balance, so number-switching procedures and repayment of unused monetary credit do not apply. If a specific offer expressly introduces either feature, its procedure, deadlines, compensation, and any charges are disclosed before payment.
- Byte uses proportionate technical and organisational measures to prevent, detect, and resolve security incidents and protect service integrity. Where necessary, it may restrict an affected function for the necessary period, informs the customer to the extent required by law, and restores the service; depending on the impact, correction, replacement performance, a price reduction, refund, or other statutory compensation may apply.
- Service information and contract documents are provided electronically in readable form; support can be contacted for an accessible alternative. The specific offer or contract summary states applicable accessibility and compatibility features and limitations without limiting statutory rights of persons with disabilities.
- Where an offer is data-only and has no telephone number, it does not provide a number-based interpersonal service, emergency calling through that eSIM, or a directory listing. An offer with a number, calls, or SMS enters new sale only with substantiated territorial and functional scope for calls and SMS, rules for 112 and other emergency services, subscriber directories, and number portability; the contract summary expressly states those facts.
- The technical steps for concluding the contract are: select a plan and review the cart; enter an email and any optional billing details; review the final price and contract summary; separately and expressly accept the terms and request immediate performance; submit the order using a control that clearly indicates the obligation to pay; complete payment; and receive Byte's confirmation after successful payment, when the contract is concluded. Before submission, the customer can change the plan, quantity, email, or billing details or return to the cart; validation errors are shown next to the relevant field and the order cannot continue until they are corrected and the required consents are given. If the offer or price changes, payment cannot start until the updated contract summary has been reviewed and confirmed. An error discovered after conclusion can be reported to support@tvojedata.cz. The contract may be concluded in Czech, English, German, or Ukrainian according to the language selected for the contract documents. Byte stores the electronic contract record, specific contract summary, accepted terms version, and recorded consents for as long as needed to perform the contract, handle complaints, protect legal claims, and comply with statutory duties. Direct access to the internal record is not provided; the complete copy is sent to the order email in a form that can be stored and reproduced unchanged, and the email can be resent from order management or requested at support@tvojedata.cz.
Payment terms
Who receives payment and how it is processed.
- Before confirming an order, you see the final price, currency, and whether the prepaid service is one-off or renews automatically. Byte development s.r.o. receives the payment.
- We accept the cards supported by checkout and, where available, Apple Pay or Google Pay. Stripe processes payment; Byte does not store full card details. For Flex, Stripe securely retains the payment method for automatic payment of the next 30-day prepaid period.
- After every successful payment we email a confirmation and payment document and, where required by the applicable tax regime, an invoice. Personal or business billing details are optional and are entered only if you want them on the document or saved in your profile; leaving them blank does not block the purchase.
- Report an incorrect, duplicate, or incomplete payment or connectivity defect to support@tvojedata.cz; Byte obtains technical assistance from an upstream or operator as needed.
eSIM delivery and activation
How you receive the QR and when service validity starts.
- The eSIM profile or activation details are delivered electronically to the order email; no physical SIM is shipped unless the specific offer expressly says otherwise.
- The QR is usually made available after payment confirmation. The plan states when validity begins — installation, first network connection, or another rule.
- Check eSIM support and device unlocking at /kompatibilita before buying. This does not limit your rights for a defective profile, failed delivery, or defective service.
- TvojeData is the first contact for a missing or unusable QR and for network or activation issues, which it may technically escalate upstream.
Related terms
Partnerships, creator content, and reviews have dedicated rules.
Minimal personal data
Which data TvojeData needs and which data it does not collect.
- Standard consumer checkout can be completed with only an email for the QR, confirmation, receipt, and support. Name, contact phone, and billing address are optional for personalization, an invoice, or a saved profile; we do not require or verify them as mandatory subscriber-identification data, and leaving them blank does not block the service. We do not collect date of birth, a mandatory residential address, a national identifier, a document number, or an ID copy.
- We keep order, payment, and technical identifiers required to provide the service, support, security, and accounting. Stripe processes payment data, and wholesale technical suppliers process eSIM-profile technical data.
- Anonymous prepaid service here means purchase without mandatory verification of civil identity, not anonymous internet use. The mobile network processes operational data required for connectivity.
- The full purposes, recipients, retention rules, and data-subject rights are at /ochrana-udaju; export and deletion of TvojeData data are also available through /gdpr.
Withdrawal, complaints, and remedies
How to withdraw or submit a complaint and which remedies are available.
- A consumer may withdraw from a distance contract within 14 days after it is concluded. The deadline is met by sending Byte an unequivocal notice before it expires; the model below may be used but is not required for a valid withdrawal.
- At checkout, a consumer expressly asks for service to begin before the 14-day withdrawal period ends. If the consumer withdraws after service begins, the proportionate price for performance already supplied is payable; the right of withdrawal ends only after the service has been fully supplied with prior express consent and acknowledgement that the right will end.
- Byte returns payments refundable following withdrawal without undue delay and no later than 14 days after receiving the notice. It uses the same payment method unless the consumer expressly agrees otherwise and incurs no additional cost; only the statutory proportionate amount for service already supplied may be deducted.
- Byte, as provider and seller, accepts complaints concerning payment, a payment document or invoice, QR delivery, activation, connectivity, speed, FUP, and other service parameters at support@tvojedata.cz. Byte may involve a technical supplier, but remains responsible to the customer.
- A complaint about price or defective service must be submitted without undue delay and no later than 2 months after delivery of the bill or defective supply. If no bill is supplied for the prepaid service, the two-month period runs from the day the service was supplied. Byte resolves the complaint without undue delay and no later than 1 month after receipt, or within 2 months where consultation with a foreign operator is required.
- Include the order number, affected eSIM, country, time, and problem description. Depending on the defect, Byte will correct it, provide replacement performance, grant a proportionate reduction, or refund the price where the contract or mandatory law provides that right.
Model withdrawal notice
Copy and complete this model if you want to exercise a right of withdrawal.
To: Byte development s.r.o., Příkop 843/4, Zábrdovice, 602 00 Brno, support@tvojedata.cz
I hereby give unequivocal notice that I withdraw from the service contract for order [order number].
Email used for the order: [email]
Ordered service: [eSIM or plan name — optional]
Date the contract was concluded / ordered: [date — optional]
Consumer's name: [optional]
Consumer's address: [optional]
Date sent: [date]
Signature: [only if this notice is submitted on paper]
Send the notice to support@tvojedata.cz or Byte's registered address. The model offers name, address, and contract date only as voluntary model fields, and checkout does not require them. The order number and order email are enough for electronic processing; validity does not depend on completing voluntary fields where the notice unequivocally identifies the contract and intent to withdraw. We do not require a name, residential address, date of birth, national identifier, or ID document. The effect of service commencement or full performance on withdrawal follows the section above and mandatory law.
Out-of-court dispute resolution
CTU handles electronic-communications disputes; other consumer disputes may fall to COI.
- If Byte rejects a complaint or does not resolve it on time, a proposal to open proceedings concerning an objection to the complaint outcome may be filed with the Czech Telecommunication Office without undue delay and no later than 1 month after delivery of the outcome or expiry of the resolution deadline.
- CTU is the out-of-court dispute-resolution body for electronic communications: Sokolovská 219, Prague 9, spotrebitelskespory@ctu.gov.cz, www.ctu.gov.cz.
- A consumer dispute outside CTU's statutory jurisdiction may be handled by the Czech Trade Inspection Authority (COI), Gorazdova 1969/24, 120 00 Prague 2, www.coi.cz, adr.coi.cz.
- The former EU ODR platform has closed; current CTU and COI contact details apply.
Contact and provider identity
How to contact us and verify the provider's identity.
Byte development s.r.o. is the service provider, seller, merchant of record, and controller for the purchase and service flow. First contact for orders, QR delivery, payments, and complaints:
Legal name
Byte development s.r.o.
Company ID
21661235
Data box
hjhpcu9
Commercial register
Krajský soud v Brně, oddíl C, vložka 139696
Registered address
Příkop 843/4, Zábrdovice, 602 00 Brno
Telephone contact
Need more information? Contact support.Back to home