WhatsApp for Xperia 10 II

WhatsApp calls are VoIP, so the answer button on some Bluetooth headsets and car kits won't pick up unless WhatsApp has the right permissions. On the Xperia 10 II go to Settings > Apps > WhatsApp > Permissions and enable Phone and Nearby devices. Then re-pair the headset under Settings > Device connection > Bluetooth and update WhatsApp from the Play Store, since older builds had a known headset-answer bug. If it still fails, try answering from the phone screen first to confirm the call itself is working. See how others solved this on Reddit

Stock Sony software on the Xperia 10 II has no built-in app cloning or app-twin feature. Modern WhatsApp supports two numbers natively: open WhatsApp > Settings > tap the arrow next to your name > Add account, then verify the second number (each number needs to receive its own SMS code). Alternatively, install WhatsApp Business from the Play Store alongside regular WhatsApp for a second number. Avoid third-party clone APKs, as they risk getting your number banned. See how others solved this on Reddit

WhatsApp backs up to Google Drive on Android, so on your old phone open WhatsApp > Settings > Chats > Chat backup and back up to the same Google account you'll use on the Xperia 10 II. On the new phone, install WhatsApp from the Play Store, verify the same phone number, and choose Restore from Google Drive when prompted. If you're moving from an iPhone, use WhatsApp's official Move to Android tool with a USB-C cable, since iCloud backups can't be restored directly on Android. See how others solved this on Reddit

Auto-downloaded WhatsApp images go to Internal storage > Android > media > com.whatsapp > WhatsApp > Media > WhatsApp Images, not the main camera folder, so they may not appear in the gallery if media visibility is off. In WhatsApp go to Settings > Chats and turn on Media visibility, then check the folder using Files by Google or the Album app. If they still don't show, confirm WhatsApp has Photos and videos permission under Settings > Apps > WhatsApp > Permissions. See how others solved this on Reddit

Heat and fast drain on the Xperia 10 II usually come from an app staying awake in the background or aggressive sync, so check Settings > Battery > Battery usage to see which app is responsible. Set heavy apps like WhatsApp to optimized battery use under Settings > Apps > WhatsApp > Battery, turn off Ambient (always-on) display, and enable STAMINA mode for everyday use. If it overheats during charging or calls, remove any thick case and avoid using the phone while it charges. See how others solved this on Reddit

WhatsApp uses its own basic in-app camera that doesn't use Sony's image processing, so in-chat shots look softer than the stock Camera app. For better results, take the photo with the Xperia's Camera app first, then attach it in WhatsApp via the gallery/attach icon instead of the camera icon. Also open WhatsApp > Settings > Storage and data > Media upload quality and set it to HD to reduce compression on what you send. See how others solved this on Reddit