If I delete a message in WhatsApp, will it also be deleted on the computer - briefly?
Yes, if you delete a message in WhatsApp on your phone, it will also be deleted from your computer, assuming both devices are using the same WhatsApp account and are synchronized with each other.
If I delete a message in WhatsApp, will it also be deleted on the computer - in detail?
When you delete a message in WhatsApp on your mobile device, it is automatically removed from all devices where that particular WhatsApp account is active. This includes your computer if you have WhatsApp Web or Desktop installed and logged in with the same phone number.
WhatsApp uses end-to-end encryption for messages, which means the content of your conversations is secured between your device and the recipient's device. When you delete a message on one device, the deletion action is synchronized across all connected devices through WhatsApp’s server infrastructure. Therefore, the same message will be deleted from your computer as well.
It’s important to note that this synchronization relies on an active internet connection for both your mobile device and your computer. If either device is offline at the time of deletion, the action may not be immediately reflected on the other device until it reconnects to the internet.
Additionally, if you have enabled backup features such as Google Drive or iCloud, the deleted messages will not be included in future backups. However, they may still exist in older backups unless those backups are manually deleted or overwritten by new data.
In summary, deleting a message on your mobile device will indeed delete it from WhatsApp Web or Desktop on your computer, provided both devices are connected to the internet and using the same WhatsApp account.