By November 12, 2018 Whatsapp will start deleting old messages, photos and videos from numerous accounts.
This is as a result of the new app update that changes the way backed-up WhatsApp content works.
WhatsApp has over the time used  Google Drive to backup all the whatsapp content.
“Due to a new agreement between WhatsApp and Google, WhatsApp backups will no longer count against Google Drive storage quota,” Google explained in an email to users.
“To avoid the loss of any backups, we recommend that people manually back up WhatsApp before November 12, 2018.”
How to prevent whatsapp data loss especially after loosing a phone.
First, make sure you have a Google account and have Google Drive installed on your phone.
Also, switch onto Wi-Fi, so you don’t use up valuable data saving all of your messages and photos to the cloud.
Then open your WhatsApp app and go into Menu.
From there, go to Settings, then Chats, then Chat Back Up.
If you select Back Up then everything on your phone should automatically be backed up to Google Drive.
You can set WhatsApp to make regular back-ups, which we recommend.
That way, your messages will be safe – and can be restored if you ever lose your phone, or change to a new model.
(source: The Sun)