WhatsApp for Infinix Note 40 Pro+ 5G

XOS aggressively restricts background apps, which can throttle WhatsApp's camera and audio during a call. Open Settings > Apps > App management > WhatsApp > Battery usage (or 'App battery usage') and set it to 'No restrictions' / 'Allow background activity'. Then open WhatsApp itself and go to Settings > Storage and data > Use less data for calls and turn it OFF so the video stream isn't compressed. Finally, make sure XOS power saving (Settings > Battery > Power saving / Ultra power saving) is off during calls, and connect over Wi-Fi or a stable signal, since most call lag is bandwidth-related. See how others solved this on Reddit

Major XOS updates can reset app permissions and autostart settings, which breaks WhatsApp notifications and background sync. Re-grant everything under Settings > Apps > App management > WhatsApp (Notifications, Storage, Camera, Microphone) and enable it under Settings > Apps > Auto-start management. Then clear WhatsApp's cache via Settings > Apps > App management > WhatsApp > Storage > Clear cache (this does not delete chats). Reboot once after the update finishes, and update WhatsApp from the Play Store in case the installed build is outdated. See how others solved this on Reddit

XOS battery saving and the built-in cleaner force-close WhatsApp to save power, so messages only arrive when you reopen the app. Set Settings > Apps > App management > WhatsApp > Battery usage to 'No restrictions', enable WhatsApp under Settings > Apps > Auto-start management, then lock the app in the Recents screen (swipe the WhatsApp card down or long-press it and tap the padlock icon) so the cleaner can't close it. Disabling 'Power saving' under Settings > Battery also helps. See how others solved this on Reddit

Bans usually come from bulk-messaging behavior, messaging many people who haven't saved your number, or having previously used a modified WhatsApp (GB/Plus) on the device. First confirm you only have the official app from the Play Store. On the ban screen tap 'Request a review' to appeal, or reach support inside the app via Settings > Help > Contact us, entering your number in full international format. Going forward, avoid sending repetitive or unsolicited messages. See how others solved this on Reddit

The Note 40 line handles WhatsApp fine, but XOS ships with bloatware (Palmstore, Phoenix Browser, Folax) that can push spam notifications and consume RAM. Disable their alerts under Settings > Notification & status bar > App notifications by turning off notifications for the preinstalled apps, and uninstall or disable the ones you don't use via Settings > Apps > App management. This keeps WhatsApp notifications clean and frees memory for smoother messaging. See how others solved this on Reddit