I’ll add my two cents, I have mild tinnitus on the left ear, like other readers I learned to ignore it and only really notice it when focusing or drawing attention to it. Luckily doesn’t affect my sleep or work. Stress and similar situations seem to intensify it a little and I become more aware. I’ll add a curious one to the discussion, I’m a big AirPods fan, as soon as Apple released the AirPods Pro I bought them, on the first week of use I started getting horrible headaches/nauseas which I associated (most likely wrongly) to having tinnitus and it causing some balance “imbalance”. Returned them and got back to regular AirPods.
Hmmm, it was within a week or two of getting AirPods Pro (and heavily using the noise cancelling mode) that I developed a strange dull ache/pressure throughout my sinuses and upper jaw. Stopped using noise cancelling and it seems to have improved a lot but hasn’t completely gone away.
Some googling suggests noise cancelling tech has negative side-effects for quite a lot of people.
I strongly suspect that many others must be suffering from environment-/diet-/tech-induced ailments but are simply not inquisitive enough to experiment and identify the sources of discomfort.
How can you guarantee this? And how about received messages? How can you retrieve all your old messages/conversations when you install the app on a new device? Don't they come from WhatsApp servers? Just curious, not doubting that you are actually an ex-WhatsApp employee.
I mean, I can't guarantee it. As others have said, it's not impossible that things have changed since I left or will change in the future. But I doubt it — e2e encryption is a big selling point for WA and something that is dear to the company's heart.
> And how about received messages?
It's the same deal — the sender encrypts the message with the the recipient's public key, and the recipient decrypts it with their private key (which was generated locally and never goes over the network).
> How can you retrieve all your old messages/conversations when you install the app on a new device? Don't they come from WhatsApp servers?
No, you can only get old messages from your old device or from a backup that went to the cloud somewhere (e.g. iCloud or Google backup). The messages on your phone are stored locally in a DB, so if you copy that DB to a new phone it'll have the new messages. WhatsApp doesn't store messages — they are only present on WA infra until acknowledged as received by the destination.
