[tiwil]

And the first you said about E2EE encryption. I have same reviews. I cant find it in settings.

I see why. E2EE only applied in secret chats. This type of chat can only be accessed at one specific device where secret chat started, not all device like normal chat in Telegram. Search "does telegram use end to end encryption" on Google. Many says it's for secret chat while nobody say normal chat do have E2EE too.

Now I know why Whatsapp can only be used in one device. The decryption key only stored in one device and should not be transferred to any other device. While on the other hand, Telegram doesn't use E2EE, therefore their client can get the same message from any device at the same time since no decryption needed.