Privacy Policy

Last updated 30 October 2026

CellMate is a messenger for companies. Your company (your "admin") creates and manages your account. This policy explains what the CellMate app and server keep, and what they cannot see.

Messages and calls are end-to-end encrypted

Messages, photos, files, voice notes and calls are encrypted on your device with the Signal protocol before they leave it. The server only passes on encrypted data and cannot read it. Your admin cannot read your chats either.

What the server keeps

• Account details set by your admin: your ID, name, company, departments, and, if your admin adds them, your mobile number, email and profile photo.
• Encryption public keys of your device, so others can send you encrypted messages.
• Encrypted messages waiting for delivery, until your device receives them (at most 30 days), and encrypted attachments for up to 14 days.
• Your chat backup, if you turn it on. It is encrypted with a key made from your password; the server cannot open it.
• A push token for your device, so it can be woken up. A notification only says "New message" or "Incoming call", never who or what.
• Settings such as your About line, who you blocked, and the permissions your admin set.
• An activity log for admins (for example, who changed a group or a permission), and reports you send about others, including any messages you choose to attach.
• IP addresses are used briefly to limit abuse (too many sign-in attempts). They are not stored with your messages.

What we do not do

• No advertising, no tracking, no analytics, and no selling or sharing of your data.
• No access to your contacts, photos or location unless you choose to send them in a chat.

Services involved

Notifications are delivered by Apple (iPhone) or Google (Android). They receive only the wake-up signal, not message content. Calls connect directly between devices, or through the CellMate relay server when a direct connection is not possible; calls stay encrypted.

Who can see your account

The admins of your company can see your account details and the activity log, and can remove your account. They cannot read your messages. If you report someone, the admins see your report and the messages you attached.

Deleting your account

In the app, open Settings > Delete account. If your company manages accounts, this sends a deletion request to your admin, who deletes the account. Deleting removes your account, keys, waiting messages, files and backup from the server.

Children

CellMate is meant for work use and is not directed at children under 13.

Contact

Questions about your account go to your company admin (Help desk in the app). Questions about this policy: hello.cellbtech@gmail.com.