I think in this context it might be interesting that WhatsApp is actually using the same end-to-end encryption employed by Signal/Textsecure for some users. Thi

I think in this context it might be interesting that WhatsApp is actually using the same end-to-end encryption employed by Signal/Textsecure for some users. This encryption is in general considered superior to the strange protocol Telegram employs. The problem WhatsApp has right now in Brazil MIGHT be caused by them simply not posessing the information the judge wants them to hand out. But I am heavily speculating here, since I neither know what information they were asked for, nor whether the data in question was end-to-end encrypted. The problem with WhatsApps encryption is of course that you have no way to check the encryption status of a conversation. It seems to only work for one-to-one messages between Android users as of the end of last year. Maybe this has changed in the meantime. Maybe the encryption has been enabled for more or less users in the meantime. Who knows.