Hard Reset via Recovery — Samsung Galaxy S II 4G I9100M
Optimized for Galaxy S II 4G I9100M (Android 2.3 (Gingerbread))
Factory Reset from Settings — Samsung Galaxy S II 4G I9100M
Optimized for Galaxy S II 4G I9100M (Android 2.3 (Gingerbread))
Enter Recovery Mode — Samsung Galaxy S II 4G I9100M
Optimized for Galaxy S II 4G I9100M (Android 2.3 (Gingerbread))
FRP Bypass (Google Lock) — Samsung Galaxy S II 4G I9100M
Optimized for Galaxy S II 4G I9100M (Android 2.3 (Gingerbread))
Why reset your Samsung Galaxy S II 4G I9100M?
A hard reset on the Samsung Galaxy S II 4G I9100M 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 S II 4G I9100M?
Yes. A hard reset (also called a factory reset) erases all apps, photos, messages, and accounts, returning the Samsung Galaxy S II 4G I9100M to its out-of-box state. Back up anything you want to keep before starting.
Does resetting the Samsung Galaxy S II 4G I9100M 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 S II 4G I9100M?
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 S II 4G I9100M?
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 S II 4G I9100M 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 reset my Samsung Galaxy S II 4G I9100M?
Use the Hard Reset method above if your Samsung Galaxy S II 4G I9100M 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.
Does my Samsung Galaxy S II 4G I9100M have a hard reset button?
Not a single dedicated button — the Samsung Galaxy S II 4G I9100M uses a button combination instead of one labeled "reset." See the Hard Reset section above for the exact keys to press.