Telegram would be far easier to access.
There is an obvious way for a government to get access to the cloudy part of telegram. Get the telco to redirect the activation SMS to a device they control, copy all the messages.
The access could probably be masked to some extent by careful timing, or blocking the internet on the other devices and then deleting the notifications.
Of course this would be why the system has a private mode, too.
I still trust it more than something owned by Facebook though.
Biting the hand that feeds IT
