Quick Fix Summary
Head to Settings > Apps > Mi Phone (or whatever dialer you're using now) > Set as default > Clear defaults. Next time you tap the phone icon, your phone should ask which dialer to use by default. Pick your favorite and you're done.
What's going on here?
Android lets you set a default app for calling, but Mi Phones hide this setting deep in the menus. On Xiaomi, Redmi, and Poco devices running HyperOS 1.5 or newer, the process works like stock Android—except you'll find the Set as default button under the app's info screen instead of the main settings menu.
Here's how to actually do it
- Open Settings. Swipe down from the top and tap the gear icon, or hunt for it in your app drawer.
- Head to Apps. Scroll to Apps (some versions call it "Installed apps").
- Find your current dialer. Look for Phone, Mi Phone, or Dialer in the list, then tap it.
- Tap "Set as default." On older versions, this might say "Open by default" or "Launch by default." Tap it anyway.
- Clear the default. Choose Clear defaults to wipe the current setting.
- Test it out. Tap the phone icon again. Your phone should now ask: "Use this app by default?" Pick your preferred dialer (like Mi Phone, Google Phone, or Truecaller).
- (Optional) Lock it in permanently. If you never want to see that prompt again, reopen the app, go to its Settings > Default apps > Phone, and select your dialer of choice.
Heads up: After the HyperOS 2.0 update (released Q3 2025), the path changes slightly. Try Settings > Apps > Manage apps > [Dialer] > Default apps > Phone > Clear defaults instead.
Still not working? Try these tricks
- Hit the Default Apps menu directly. Go to Settings > Apps > Default apps. Tap Phone and pick your preferred dialer from the list.
- Force-stop and reset. Go to Apps > [Dialer] > Force stop. Then clear cache and data (this won't touch your call logs). Reopen the app and set the default again.
- Let the dialer itself ask. Open your preferred dialer app. Some will pop up a prompt the first time you make a call, asking to set themselves as default.
How to keep this from happening again
- Keep your phone updated. Regular HyperOS updates (Settings > System > Software update) can tweak default app behavior, so don't skip them.
- Stick to one dialer. Installing multiple dialer apps usually causes conflicts when setting defaults. Only keep what you need.
- Skip third-party launchers. Launchers like Nova can mess with default app settings. For reliable behavior, stick with the stock MIUI launcher.
- Double-check after big updates. Major updates—especially HyperOS 2.0 and later—can reset your default dialer. Always verify it hasn't reverted.
How can I change my Truecaller dialer to normal call?
Head to Settings > Apps > find Truecaller > Set as default > Clear defaults. Next time you make a call, your phone should ask which dialer to use. Pick the standard Phone app (or Mi Phone) and Truecaller won't hijack your calls anymore.
How do I change my dialer?
Tap “Manage Applications” and switch to “All” (some devices hide this under categories). Find “Dialer” or “Phone,” tap it, then look for “Launch by default.” Clear that setting to reset the prompt. When you dial next, your phone should ask which app to use by default.
Why isn't *#*#4636*#* working?
Open the Play Store, search for “TrueCaller,” and install it if you haven't already. Open TrueCaller, find the “Dialer Pad,” and enter *#*#4636#*#* from there. That should unlock the menu.
What does *#*#4636#*#* do?
Think of it as a backstage pass to your phone's internals. Android supports these codes to let users peek at details like IMEI numbers or battery health—stuff that's usually buried in menus. Honestly, this is one of the most useful codes for troubleshooting.
What's *#0011 for?
*#0011# reveals network info, while *#*#4636#*#* dumps user stats and phone details. Another handy one is *#12580*369#, which checks software and hardware info in one shot.
What does *#21 tell me?
Dial *#21# to see the status of unconditional call forwarding. If everything's normal, the code won't return any info (or it'll say forwarding is off). That's all there is to it.
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