Contact Discovery: The primary reason is to identify which of your existing phone contacts are also Telegram users. By comparing the numbers from your phone with its user database, Telegram can populate your “Contacts” list within the app, showing you who’s already there and who you can invite.
>Name Display: To correctly display names in your Telegram chats and notifications according to how you’ve saved them on your phone, even if the other person has a different display name or username.
>”Contact Joined” Notifications: To notify you (and potentially your contacts about you) when a saved phone number newly registers for Telegram.
Multi-Device Access:
Because your contact list (like your chats, media, etc.) is stored in the cloud, you can seamlessly access your Telegram contacts from any device where you telegram number database log in (another phone, tablet, desktop app, web version) without needing to re-sync.
Telegram employs several measures to protect the contact data it stores in the cloud:
Encryption:
In Transit: Data (including your synced contacts) is encrypted as it travels between your device and Telegram’s servers.
At Rest (on servers):
Telegram states that all user data, including contacts, is stored “heavily encrypted” on its servers.
Distributed Infrastructure and emerging trends in sms marketing Key Splitting: Telegram uses a decentralized infrastructure with ! servers located in various jurisdictions. Critically, it claims that the encryption keys used to decrypt user data are stored separately from the actual encrypted data, and these keys are often split into parts. This distributed nature and key splitting are designed! to make it very difficult for any single government or entity to gain access to both the data and the means to decrypt it.
>Strict Data Usage Policy: Telegram explicitly belgium numbers states that it does not use your personal data, including your synced contact list, for advertising purposes, nor does it sell it to third parties. The data is used solely for the functionality of the Telegram service.