WhatsApp for Xiaomi 17

This usually happens when more than one contact source is syncing (for example a Xiaomi/Mi Cloud or SIM copy on top of your Google contacts), so WhatsApp matches a duplicate entry with the wrong saved name. Open the Contacts app, go to its Settings, and use 'Merge duplicate contacts'. Then in Settings > Accounts (or Accounts & sync) make sure only your Google account is syncing contacts and turn off contact sync for sources you don't use. Finally, force-stop WhatsApp from Settings > Apps > Manage apps > WhatsApp and reopen it so it re-reads the cleaned address book. See how others solved this on Reddit

HyperOS aggressively suspends background apps to save battery, which can stop WhatsApp from delivering notifications while the phone is locked. Go to Settings > Apps > Manage apps > WhatsApp, open 'Battery saver' and set it to 'No restrictions', then enable 'Autostart'. It also helps to lock the app in Recents: open the recent-apps view, swipe down on the WhatsApp card (or long-press it) and tap the lock icon so HyperOS won't clear it from memory. See how others solved this on Reddit

Incoming VoIP calls from WhatsApp, Telegram and similar apps often fail to ring when HyperOS kills the app's background service or blocks the full-screen call notification. In Settings > Apps > Manage apps > WhatsApp, enable 'Autostart' and set 'Battery saver' to 'No restrictions'. Then open 'Other permissions' and allow 'Display pop-up windows while running in the background', and under Notifications make sure the Calls channel and lock-screen notifications are turned on so the incoming-call screen can appear. See how others solved this on Reddit

The Xiaomi Gallery indexes the WhatsApp media folders, but media won't show up if WhatsApp lacks full file access or the albums are hidden. In Settings > Apps > Manage apps > WhatsApp > Permissions, grant 'Files and media' with 'Allow management of all files'. In WhatsApp go to Settings > Chats and turn on 'Media visibility' so saved media is exposed to the Gallery. If the albums still don't appear, check Gallery settings for hidden albums and reboot so it re-scans storage. See how others solved this on Reddit

Most of these issues come from HyperOS's battery and background-process management, not a hardware fault, so they're usually fixable without any script. For each messaging app, go to Settings > Apps > Manage apps > [app], set 'Battery saver' to 'No restrictions', enable 'Autostart', and keep the apps updated from the Play Store. Some users run an ADB tweak to disable HyperOS's memory cleaner, but for most people whitelisting the apps and turning off battery optimization resolves the notification and call problems. See how others solved this on Reddit