Hard Reset via Recovery — Samsung Galaxy M21s
Optimized for Galaxy M21s (Android 10, One UI 2.5)
Factory Reset from Settings — Samsung Galaxy M21s
Optimized for Galaxy M21s (Android 10, One UI 2.5)
Enter Recovery Mode — Samsung Galaxy M21s
Optimized for Galaxy M21s (Android 10, One UI 2.5)
FRP Bypass (Google Lock) — Samsung Galaxy M21s
Optimized for Galaxy M21s (Android 10, One UI 2.5)
Why reset your Samsung Galaxy M21s?
A hard reset on the Samsung Galaxy M21s fixes boot loops, forgotten PINs and persistent lag. The method above will wipe the device back to factory condition. Always back up your data first, as a reset cannot be undone.
Frequently asked questions
Will a hard reset delete everything on my Samsung Galaxy M21s?
Yes. A hard reset (also called a factory reset) erases all apps, photos, messages, and accounts, returning the Samsung Galaxy M21s to its out-of-box state. Back up anything you want to keep before starting.
Does resetting the Samsung Galaxy M21s remove the SIM lock or carrier lock?
No. A hard or factory reset only clears data and settings — it doesn't remove a carrier/SIM lock, which is tied to the device's IMEI at the network level. You'd need to contact your carrier for an unlock.
How long does a factory reset take on the Samsung Galaxy M21s?
Typically a few minutes, though it can take longer on older or heavily used devices as more stored data has to be wiped.
Will I need my Google account password after resetting the Samsung Galaxy M21s?
Yes, if Factory Reset Protection (FRP) is enabled. Android (and HarmonyOS 2.x devices with Google services) will ask for the last signed-in Google account after a reset — make sure you know that password first.
How do I format my Samsung Galaxy M21s?
"Formatting" and "factory resetting" mean the same thing for the Samsung Galaxy M21s — both erase all data and restore default settings. Use whichever method above matches your situation.
What is recovery mode on my Samsung Galaxy M21s?
Recovery mode is a stripped-down menu outside the normal operating system, used to wipe data or apply updates when the Samsung Galaxy M21s won't boot normally. See the Enter Recovery Mode section above for how to reach it on this device.
Does my Samsung Galaxy M21s have a hard reset button?
Not a single dedicated button — the Samsung Galaxy M21s uses a button combination instead of one labeled "reset." See the Hard Reset section above for the exact keys to press.