WhatsApp for Oppo A58

ColorOS aggressively closes background apps to save battery, which silences WhatsApp until you reopen it. Go to Settings > Battery > Background activity (or Settings > Apps > App management > WhatsApp > Battery usage) and set WhatsApp to "Allow background activity" and enable "Allow auto-launch." Also open Recents (swipe up and hold), pull down on the WhatsApp card, and tap the lock icon so the system stops clearing it from memory. See how others solved this on Reddit

Incoming-call display is blocked when ColorOS restricts notification, lock-screen, or overlay permissions. Open Settings > Apps > App management > WhatsApp > Notifications and confirm the "Calls" channel is on with lock screen and banners enabled. Then go back to WhatsApp's app info and turn on "Display over other apps," and enable "Allow auto-launch" under Battery usage so WhatsApp can wake the screen for a ringing call. See how others solved this on Reddit

On Android 13/14 with ColorOS scoped storage, WhatsApp media stays hidden unless media visibility and photo permissions are granted. In WhatsApp open the chat > tap the contact name > Media visibility > On (also check WhatsApp Settings > Chats > Media visibility). Then go to Settings > Apps > App management > WhatsApp > Permissions and set "Photos and videos" to Allow (not "Ask every time"). To sync to the cloud, open Google Photos > your profile > Photos settings > Back up > Back up device folders and turn on the WhatsApp Images folder. See how others solved this on Reddit

WhatsApp has no manual import for .crypt14 files — it only restores them automatically, and only on the same phone number with the matching encryption key. The reliable route is a Google Drive backup tied to that number: install WhatsApp fresh, verify the number, and accept the restore prompt. For a local file, rename it to msgstore.db.crypt14 and place it in Internal storage > Android > media > com.whatsapp > WhatsApp > Databases, then reinstall — but it will only decrypt if your account's original key still exists. See how others solved this on Reddit

Weak or one-sided call audio is usually a blocked or dirty bottom microphone. Clear the bottom mic hole and remove any case covering it, then confirm WhatsApp has mic access under Settings > Apps > App management > WhatsApp > Permissions > Microphone (set to Allow). Also check that no Bluetooth headset is silently capturing the audio, since that often causes faint or muffled sound during calls. See how others solved this on Reddit

That is ColorOS "Flexible Windows," which opens some notifications as a small floating bubble. Go to Settings > Special features > Flexible windows and turn off opening notifications in a floating window. To use the current window full-screen instead, drag the small window to the top of the screen or tap its expand icon to maximize it. See how others solved this on Reddit