WhatsApp for Infinix Smart 8

First confirm mobile data is enabled under Settings > Mobile network (or SIM cards & mobile networks), and in dual-SIM setups make sure the correct SIM is selected for Mobile data. Check your APN under Settings > Mobile network > [your SIM] > Access Point Names, and tap the menu to 'Reset to default' if you're unsure. If data still fails, toggle Airplane mode on and off, reseat the SIM, and restart the phone. For WhatsApp calls specifically, also confirm WhatsApp has data access under Settings > Apps > WhatsApp > Mobile data, with both mobile data and background data allowed. See how others solved this on Reddit

Most ads on XOS come from preinstalled apps like Palm Store, Phone Master, and the Hi Browser. Open Settings > Apps > See all apps, select each of these, tap Notifications and turn them off; inside Phone Master itself, open its settings and disable any 'recommendations' or 'content/news push' toggles. Next go to Settings > Apps > Special app access > Display over other apps and revoke permission for anything you don't recognize, since pop-up ads rely on that. Setting Private DNS to a blocking resolver like dns.adguard-dns.com under Settings > Connection & sharing > Private DNS also cuts a lot of ad traffic system-wide. See how others solved this on Reddit

On XOS, open the Recents/multitasking view, tap the small app icon at the top of an app's card, and choose 'Split screen' — then pick a second app for the other half. Not every app supports split-screen, which is why some refuse to open in the second window. If the option is missing, check Settings > Special features (or Settings > System) for a 'Multi-window' or 'Split-screen' toggle and enable it. For apps that won't split, floating window or picture-in-picture is the fallback. See how others solved this on Reddit

For WhatsApp, calls, and light browsing the Smart 8 is a capable budget phone, and the jump to the Smart 9 is incremental (a refreshed chipset and minor camera tweaks), so it isn't worth upgrading just for that. To get the most from a Smart 8, keep XOS updated under Settings > System > System update, disable unneeded preinstalled apps to free RAM, and back up to a microSD card or Google Photos, since storage fills quickly on the base model. See how others solved this on Reddit

The Smart 8 sits at the entry level and is best for messaging, social apps, and basic everyday use rather than gaming or heavy multitasking — if you mainly need WhatsApp, calls, and reliable battery life, it's a sensible choice. If you want noticeably smoother performance, step up to the Note or GT series. For a Smart 8 owner, the practical move is to disable the preinstalled ad-serving apps and keep the system updated via Settings > System > System update to keep it running smoothly. See how others solved this on Reddit