WhatsApp for Xiaomi Redmi Pro

MIUI's aggressive battery saver is freezing WhatsApp in the background, so calls and messages only appear once you manually open it. Go to Settings > Apps > Manage apps > WhatsApp > Battery saver and set it to 'No restrictions', then under Settings > Apps > Permissions > Autostart, enable Autostart for WhatsApp. Also lock WhatsApp in the Recents screen (open Recents, hold the WhatsApp card, tap the lock icon) so MIUI stops killing it. See how others solved this on Reddit

This is a notification-channel issue where the sound plays but the heads-up banner is suppressed. Open Settings > Apps > Manage apps > WhatsApp > Notifications, make sure the 'Calls' and 'Messages' channels are on, and enable 'Floating notifications' plus 'Show on lock screen' for each. Then in Settings > Notifications & Control center, turn off any 'Hide notifications' or focus/Do Not Disturb restrictions that may be blocking the call banner. See how others solved this on Reddit

MIUI delays notifications to save power, batching them until you wake the screen. Set WhatsApp's Battery saver to 'No restrictions' under Settings > Apps > Manage apps > WhatsApp > Battery saver, and enable Autostart under Settings > Apps > Permissions > Autostart. The most reliable fix on Redmi devices is to turn OFF 'Turn on MIUI optimization' in Developer options (Settings > Additional settings > Developer options), which commonly breaks WhatsApp's background notifications. See how others solved this on Reddit

A MIUI update often resets app permissions and re-enables battery restrictions, breaking background sync. After updating, re-grant WhatsApp its Autostart permission (Settings > Apps > Permissions > Autostart) and set Battery saver to 'No restrictions'. If messages still fail to send or media won't download, clear only the cache via Settings > Apps > Manage apps > WhatsApp > Clear data > Clear cache (avoid 'Clear all data', which would wipe local chats). See how others solved this on Reddit

The proximity sensor keeps the screen off when it thinks the phone is near your ear, and on some Redmi units it sticks even after you move the phone away. First remove any screen protector or dirt covering the sensor near the front camera/earpiece, then run the built-in hardware test (dial *#*#64663#*#* and check the proximity sensor) to confirm it reads correctly. As a quick workaround during a stuck call, press the power button once to wake the screen; if the sensor consistently misreads, it usually needs cleaning or service rather than a software toggle. See how others solved this on Reddit

WhatsApp has no native Wear OS app, so true two-way WhatsApp calling from the watch isn't supported regardless of which Xiaomi watch you pair. On Wear OS watches you can read and reply to WhatsApp messages via mirrored notifications, but for calls you'll need the phone itself. Make sure notification mirroring is enabled in the watch's companion app and that WhatsApp notifications aren't being blocked by MIUI battery restrictions on the Redmi Pro. See how others solved this on Reddit