WhatsApp for Tecno Camon 30 Premier 5G

Tecno's HiOS power manager aggressively freezes background apps, which silently kills WhatsApp's push connection. Go to Settings > Apps > App management > WhatsApp > Battery and set it to No restrictions, then long-press the WhatsApp card in the Recents screen and tap the lock icon so it isn't cleared from memory. Finally confirm Settings > Apps > App management > WhatsApp > Notifications is fully enabled, including the message and call channels. See how others solved this on Reddit

This is almost always HiOS background and notification restrictions blocking the incoming-call signal. In Settings > Apps > App management > WhatsApp, set Battery to No restrictions, allow background activity, and enable Display over other apps so the call screen can appear. Then open WhatsApp > Settings > Notifications and make sure call notifications are on, lock WhatsApp in the Recents screen, and verify your data or Wi-Fi connection is stable. See how others solved this on Reddit

Major HiOS updates often leave stale caches and rebuild app data in the background for a day or two, so first let it settle. Then go to Settings > Apps > App management and clear cache on heavy apps like WhatsApp, and check Settings > Battery > Battery usage to spot any app draining power abnormally. If it stays sluggish, back up your chats to Google Drive and do Settings > System > Reset options > Reset all settings (which keeps your files) before considering a full factory reset. See how others solved this on Reddit

Random shutdowns are usually a software glitch or a misreading battery gauge rather than failing hardware. Update to the latest HiOS build under Settings > System > System update, clear the cache of any app that was open when it shut down, and disable aggressive battery optimization for core apps in Settings > Apps > App management. If it keeps happening, back up and perform a factory reset via Settings > System > Reset options; if it persists after that, it is likely a battery fault needing Tecno service. See how others solved this on Reddit

HiOS batches and delays background syncing to save power, so notifications arrive late unless you whitelist the apps. Open Settings > Battery and turn off any battery saver or smart power mode, then for each important app go to Settings > Apps > App management > [app] > Battery and choose No restrictions plus allow background activity. Locking the apps in the Recents screen also stops the system from suspending their notification connection. See how others solved this on Reddit

Low-light blur from the front sensor comes from a slow shutter trying to gather light, so the smallest movement smears the shot. Hold the phone steady for a moment after tapping the shutter, tap the screen to lock focus on your face, and turn off heavy beauty or AI smoothing in the camera settings since it exaggerates the soft look. Adding any extra light source and enabling night mode or screen flash for selfies will sharpen results noticeably. See how others solved this on Reddit