WhatsApp for Tecno Camon 40 Premier

HiOS aggressively closes background apps to save battery, which holds back WhatsApp message alerts until you open the app. Go to Settings > Apps > App management > WhatsApp > Battery and set it to No restrictions / Allow background activity, then enable Autostart on the same App management screen so WhatsApp can wake itself. Finally, open the recent apps (overview) screen and tap the lock icon on the WhatsApp card so HiOS does not clear it during cleanup. Also confirm notifications are enabled under Settings > Notifications and that Do Not Disturb is off. See how others solved this on Reddit

This is HiOS power-saving blocking auto-start and background activity for messaging apps. Open Settings > Apps > App management > WhatsApp, enable Autostart, then set Battery to No restrictions / Unrestricted. In WhatsApp itself, go to Settings > Notifications and toggle notifications off and back on so the system re-registers the push channel. A restart afterward helps the changes take effect. See how others solved this on Reddit

In dim rooms the front sensor lowers its shutter speed, so any movement smears during selfies or WhatsApp video calls. Add a light source facing you and hold the phone steady, and for sharper stills use the stock Camera app's selfie mode rather than capturing inside WhatsApp, since the in-app camera uses a lower-quality stream. Avoid heavy beauty/AI filters, which can soften detail further in low light. See how others solved this on Reddit

When messages stick on a single grey tick despite a working connection, it is usually blocked background data or a stale network session on HiOS. Go to Settings > Apps > App management > WhatsApp > Data usage and enable Background data (and allow data on both Wi-Fi and mobile), then toggle airplane mode on and off to force a fresh connection. If it still fails, clear the WhatsApp cache via Settings > Apps > App management > WhatsApp > Storage and restart the phone. See how others solved this on Reddit

New HiOS builds can leave WhatsApp with a corrupted cache that causes freezes or force-closes. Open Settings > Apps > App management > WhatsApp > Storage and tap Clear cache (not Clear data, which would erase local chats), then update WhatsApp from the Play Store to the latest version. If problems continue, back up your chats in WhatsApp Settings > Chats > Chat backup before reinstalling the app. See how others solved this on Reddit

Random shutdowns often trace to a firmware bug or a thermal/battery cutoff, and they also drop WhatsApp's background connection. Update to the latest firmware via Settings > System > System update, and uninstall any aggressive battery-saver or third-party cleaner apps that may be force-closing things. After the phone is stable, set WhatsApp Battery to No restrictions so it reconnects right after each restart. If shutdowns persist on full charge, have the battery checked at a service center. See how others solved this on Reddit