Hard Reset via Recovery — Samsung Galaxy A21s
Optimized for Galaxy A21s (Android 10, upgradable to Android 12, One UI 4.1)
Factory Reset from Settings — Samsung Galaxy A21s
Optimized for Galaxy A21s (Android 10, upgradable to Android 12, One UI 4.1)
Enter Recovery Mode — Samsung Galaxy A21s
Optimized for Galaxy A21s (Android 10, upgradable to Android 12, One UI 4.1)
FRP Bypass (Google Lock) — Samsung Galaxy A21s
Optimized for Galaxy A21s (Android 10, upgradable to Android 12, One UI 4.1)
Why reset your Samsung Galaxy A21s?
A hard reset on the Samsung Galaxy A21s 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 A21s?
Yes. A hard reset (also called a factory reset) erases all apps, photos, messages, and accounts, returning the Samsung Galaxy A21s to its out-of-box state. Back up anything you want to keep before starting.
Does resetting the Samsung Galaxy A21s 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 A21s?
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 A21s?
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.
Can I factory reset my Samsung Galaxy A21s without the password?
Yes — resetting through recovery mode doesn't require your lock screen password, since it bypasses the login screen entirely. That said, Factory Reset Protection may still ask for your Google account credentials afterward as an anti-theft measure.
How do I format my Samsung Galaxy A21s?
"Formatting" and "factory resetting" mean the same thing for the Samsung Galaxy A21s — both erase all data and restore default settings. Use whichever method above matches your situation.
How do I reset my Samsung Galaxy A21s?
Use the Hard Reset method above if your Samsung Galaxy A21s is frozen or won't respond, or the Factory Reset method if the screen still works normally — both are covered step by step on this page.