WhatsApp for Samsung Galaxy Note 10

Verification failures are usually caused by SMS or push problems, so first confirm your SIM can receive a normal text and that mobile data is on. In Settings > Apps > WhatsApp > Mobile data and Wi-Fi, enable Allow background data usage and unrestricted data, then disable any battery saver or Data Saver while you verify; if the code still doesn't arrive, wait the full timer and choose Call me instead. If you've installed a custom ROM like LineageOS, registration can break unless the device has working Google Play Services or a microG setup, so re-flash GApps before retrying. See how others solved this on Reddit

During a WhatsApp voice or video call the in-call audio uses the call stream, so press the volume up key while the call is active to raise that specific level (it won't change unless a call is connected). If calls are still quiet, go to Settings > Sounds and vibration > Sound quality and effects and turn off any Dolby Atmos, equalizer, or 'Adapt sound' profile that can muffle output. As a last step, clear WhatsApp's cache in Settings > Apps > WhatsApp > Storage and restart the phone. See how others solved this on Reddit

This almost always means another phone or audio app is grabbing the call stream, so close any other calling apps and disconnect Bluetooth devices, then test again. On the Note 10 also check Settings > Apps > WhatsApp > Permissions and confirm Phone and Microphone are allowed, and set battery usage to Unrestricted via Settings > Apps > WhatsApp > Battery. If it continues, update WhatsApp from the Play Store and restart the phone, since this on-hold glitch is frequently fixed in newer app builds. See how others solved this on Reddit

Newer WhatsApp versions don't always auto-save to your Gallery by default, so you need to re-enable saving. Go to WhatsApp > Settings > Chats and turn on Media visibility, and for a specific chat open the chat, tap the contact name > Media visibility > On. Also confirm Settings > Apps > WhatsApp > Permissions > Files and media is allowed, otherwise downloaded media won't appear for the Gallery to index. See how others solved this on Reddit

Older WhatsApp Web required the phone to stay online, but with multi-device you can link the browser independently, so open WhatsApp > Settings > Linked devices > Link a device and re-scan the QR code. To stop background disconnects on the Note 10, set WhatsApp to Unrestricted under Settings > Apps > WhatsApp > Battery and turn off Adaptive battery in Settings > Battery and device care > Battery. Make sure the phone's app and your desktop browser are both fully updated, since version mismatches are a common cause of sync failures. See how others solved this on Reddit

WhatsApp runs well on the Note 10 and is the most widely used option, but you can install it alongside Samsung Messages or Signal without conflict from the Play Store. For the smoothest experience set WhatsApp to Unrestricted battery use (Settings > Apps > WhatsApp > Battery) and make sure its notifications are enabled under Settings > Apps > WhatsApp > Notifications so messages arrive instantly. If you mainly want SMS/RCS rather than internet chat, Google Messages is a strong default, but for cross-platform group chats WhatsApp remains the better pick on this device. See how others solved this on Reddit