The privacy sheet is the summary Apple shows on every App Store listing, describing what categories of data an app may collect. It is a category list, not a measurement, and reading it as one is the source of most of the confusion.
Why the labels mislead
- They are coarse. "Contact info" covers a phone number given once at sign-up and an contacts uploaded continuously. The label cannot tell them apart.
- They describe possibility, not practice. A category is listed if a feature might involve it, even when that feature is optional and most people never enable it.
- They flatten purpose. Data used to deliver your own messages to you and data used to build an advertising profile appear the same way.
- They are self-reported. Every developer fills in their own, so two apps behaving identically can be labelled differently.
What the entries mean for Telegram
A messaging service has to hold certain things to work at all. Your contacts are matched so you can find people you already know, and that matching is optional and can be declined. Your cloud messages are stored so they reach every device you own. Neither is used to target advertising, and Telegram publishes a detailed explanation of each entry on its own site.
How to read any privacy sheet
- Look at "Data Used to Track You" first. That section is about following you across other companies' apps and sites, and it is the one that distinguishes services most sharply.
- Then read the actual privacy policy for the categories you care about. The policy states purpose and retention; the label cannot.
- Treat a short label list as a starting question, not an answer.
If a conversation must leave nothing behind at all, use a Secret Chat. It is end-to-end encrypted and stored on neither a server nor your other devices, which takes the question out of the realm of labels entirely.
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