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[-] chonglibloodsport@lemmy.world 1 points 1 day ago* (last edited 1 day ago)

I think it’s helpful to bring up a bit about WhatsApp’s history.

WhatsApp was developed in 2009 (for the iPhone) to provide status notifications (Away, Busy, At Work, etc) back when SMS was the only way to message people on phones and SMS did not have such statuses. It soon morphed into a drop-in replacement for SMS messaging which helped it take off in many countries around the world where SMS delivery fees were extremely expensive but small (<1 GB) data plans were cheap (or relatively cheap, on a per-byte basis).

For most of that early history and rapid growth there was no desktop app, only the phone app. You didn’t need to create an account either: your phone number was your account. This model meant that you didn’t want someone else receiving all your messages just because they inherited your phone number, so server-side history was a non-starter to begin with. I think at some point they added the ability to backup your chat history from your phone to a cloud account such as iCloud or Google Drive.

When they launched the desktop version of WhatsApp they tied it to your phone. You had to use your phone to sign in and if your desktop lost connection to the server it could not reconnect by itself.

Anyway, if you think about users in countries like India or Brazil where SMS messages were either unavailable or cost a fortune and data plans were expensive (but still much cheaper than SMS per-byte) then it makes total sense to save as many bytes as possible over the wire. Also consider that WhatsApp’s killer feature, its group chats, are a perfect match for larger families to keep in touch. However, I think even the largest families have the need for fewer than 256 people in one group chat.

The situation for chat history may have changed more recently under the stewardship of Meta / Facebook. I think they have begun to target Slack by marketing WhatsApp Business.

this post was submitted on 12 Aug 2025
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