WhatsApp for Tecno

This is usually background data being killed by TECNO's aggressive power saver. Go to Settings > Apps > App management > WhatsApp > Battery and set it to 'No restrictions', then open Settings > Battery and turn off any battery saver that limits WhatsApp. Also confirm Settings > Apps > App management > WhatsApp > Mobile data is enabled with 'Background data' and 'Unrestricted data usage' turned on. See how others solved this on Reddit

This is almost always HiOS aggressive battery management killing WhatsApp in the background, so go to Settings > Battery > App battery management (or open Phone Master/Phone Manager), find WhatsApp and set it to "No restrictions" / allow background activity. Also lock WhatsApp in Recents (open the recents view and tap the lock icon on the WhatsApp card) and confirm Microphone and Phone permissions are granted under Settings > Apps > WhatsApp > Permissions so incoming calls actually ring. See how others solved this on Reddit

It's a genuine flagship-class book-style foldable with a real 7.85-inch inner LTPO AMOLED and a Dimensity chip, not a budget gimmick, and at its discounted price it's one of the most affordable proper folds available. The main trade-offs versus Samsung or Google are slower software updates and weaker third-party app optimization for the large inner screen, so treat it as great value rather than a feature-for-feature flagship equal. See how others solved this on Reddit

It handles most popular titles well thanks to its high-refresh display, but enable the built-in game mode for stable frame rates. Open the GameSpace / game assistant panel (swipe in from the screen edge during a game, or launch games from the GameSpace app) and switch on performance/high-performance mode, then clear background apps. In-game, set graphics to a balanced level (High/Smooth) rather than the maximum, and avoid using battery saver while playing. Letting the phone cool between long sessions reduces the thermal throttling that causes sudden frame drops. See how others solved this on Reddit

This is almost always HiOS's aggressive battery optimization freezing WhatsApp in the background. Go to Settings > Apps > Manage apps > WhatsApp > Battery saver and set it to 'No restrictions' (or 'Allow background activity'), then open Phone Master and add WhatsApp to the protected/auto-launch list so it can ring even when the screen is off. Also confirm WhatsApp has Microphone and Phone permissions under Settings > Apps > Manage apps > WhatsApp > Permissions, since missing either breaks call audio entirely. See how others solved this on Reddit

HiOS aggressively kills background apps to save battery, which is the most common cause. Open Settings > Apps > App management > WhatsApp > Battery usage and set it to 'No restrictions' (allow background activity), then go to Settings > Battery and turn off any power-saving / smart power-saving mode. Finally, open the Recents screen, hold the WhatsApp card and tap the lock icon so the system stops clearing it from memory. See how others solved this on Reddit

Tecno's HiOS power manager aggressively kills WhatsApp in the background, which stops incoming calls from ringing. Open Settings > Apps > App management > WhatsApp > Battery and set it to 'No restrictions' (allow background activity). Then go to Settings > Battery > App launch, find WhatsApp, turn off 'Manage automatically' and manually enable auto-launch, secondary launch and run in background. Finally, under Settings > Apps > Special access > Display over other apps, make sure WhatsApp is allowed so the incoming-call screen can appear. See how others solved this on Reddit

Tecno's HiOS aggressive battery management is the usual cause, since it freezes WhatsApp in the background. Go to Settings > Apps > App management > WhatsApp > Battery usage (or Power consumption) and set it to "No restrictions / Allow background activity." Then long-press the WhatsApp icon, open App info, and in the recent-apps tray lock the card so HiOS stops closing it. Turning off battery saver in Settings > Battery while you test also helps confirm the cause. See how others solved this on Reddit

Tecno's HiOS power management aggressively kills background apps, so WhatsApp stops receiving calls when the screen is off. Open Settings > Apps > Manage apps (or App management) > WhatsApp > Battery saver (or Battery usage) and set it to 'No restrictions / Allow background activity'. Then open Phone Master > App launch (also reachable via Settings > Battery), find WhatsApp, switch it from 'Auto manage' to 'Manage manually' and turn on all three toggles: Auto-launch, Secondary launch, and Run in background. Finally confirm Microphone and Notification permissions are granted under Settings > Apps > WhatsApp > Permissions. See how others solved this on Reddit

HiOS aggressively closes background apps to save battery, which stops WhatsApp from staying connected. Go to Settings > Apps > App management > WhatsApp > Battery and set it to 'No restrictions' (or 'Allow background activity'). Then open Settings > Battery and add WhatsApp to the protected / auto-launch allowed list so the system stops killing it. Finally, make sure Settings > Battery > Power saving (and Ultra/Smart power saving) is off, since that mode delays notifications. Confirm WhatsApp notifications are enabled under Settings > Apps > App management > WhatsApp > Notifications. See how others solved this on Reddit