To disable Auto download media on WhatsApp follow these stages:
Stage 1: Open 'WhatsApp' on your Android cell phone
Stage 2: Tap on the three vertical spots on the upper right corner
Stage 3: Tap on the last choice of 'Settings'
Stage 4: Choose 'Information and storage use'
Stage 5: There will be three choices— 'When utilizing mobile information', 'When connected on Wi-Fi', 'While roaming'
Stage 6: Disable all the media from each of the three classes manually