Question: how to backup whatsapp chat using mobile data iphone?
Answer: Launch WhatsApp from your Home screen. Tap on Settings. ...  Tap the Chats button. ...  Tap on Chat backup. Tap Back Up Now to upload your chat data to your iCloud storage. ...  Tap Auto Backup. ...  Tap the backup frequency you'd prefer. ...  Tap Chat Backup to go back to the last Settings menu.