Subscribers’ personal data is kept for as long as it is necessary to serve the purpose for which it was collected or in cases where the retention period is provided by applicable law, for the period provided by the law. Upon expiration of the retention period, the subscribers’ personal data is deleted in a way that it is not technically possible to be recovered or is anonymized. In particular:

• Billing Data, Terminal Equipment Data, Benefits Data, Promotional Data and Customer Care Data are retained for as long as the subscriber is active in the network. After the termination of the contract in any way and provided that there are no overdue debts or credit balance, or pending complaints, personal data is stored in customer service systems for fourteen (14) months from the termination or expiration of the contract in accordance with the relevant provision in the current legislation (No. 991/4 Decision of the National Telecommunications and Post Commission (EETT) “General Licensing Regulation”, Government Gazette B ‘2265 / 31-5-2021).
• Simple Personal Data related to the invoicing (Invoicing Data & Limited Contract Data) is kept for additional twelve (12) years from the termination or expiration of the contract for any reason, to comply with tax legislation.
• Traffic Data that is processed for invoicing purposes is kept for one (1) year for contract subscribers and three (3) months for prepaid subscribers.
• Traffic and Location Data that are processed for fault management, ensuring the security of COSMOTE’s network and information systems and service requests regarding the quality of the network and services are kept for up to thirty (30) days.
• Traffic Data for telecommunication fraud prevention is retained for one (1) month. In case a fraud incident occurs, the relevant data is retained for one (1) year in order to facilitate the investigation of the incident and exercise our rights.
• Traffic and Location Data that are intended for the competent Authorities (police and judicial), according to the legislation in force (Law 3917/2011), are retained for twelve (12) months from the date of communication. Data are destroyed at the end of the retention period following an automated process, with the exception of data which had been lawfully accessed by the competent Authorities.
• Voicemail messages are retained for up to ten (10) days.
• Not delivered SMSs/MMSs are kept for three (3) days.
• Recorded calls as well as recorded instructions provided through the IVR system are maintained for six (6) months.

After the expiration of the data retention period and their final deletion, the only information retained is the number of the subscriber’s fixed or mobile telephony connection in order to recognize any previous contractual relationship in case the subscriber wishes to return to COSMOTE’s network.

For more details you may visit https://www.cosmote.gr/cs/cosmote/en/data_retention.html