Hard Reset via Recovery — BLU C4
Optimized for C4 (Android 8.1 Oreo (Go edition))
Factory Reset from Settings — BLU C4
Optimized for C4 (Android 8.1 Oreo (Go edition))
Enter Recovery Mode — BLU C4
Optimized for C4 (Android 8.1 Oreo (Go edition))
FRP Bypass (Google Lock) — BLU C4
Optimized for C4 (Android 8.1 Oreo (Go edition))
Why reset your BLU C4?
A hard reset on the BLU C4 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 BLU C4?
Yes. A hard reset (also called a factory reset) erases all apps, photos, messages, and accounts, returning the BLU C4 to its out-of-box state. Back up anything you want to keep before starting.
Does resetting the BLU C4 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 BLU C4?
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 BLU C4?
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 BLU C4?
"Formatting" and "factory resetting" mean the same thing for the BLU C4 — both erase all data and restore default settings. Use whichever method above matches your situation.
How do I reset my BLU C4?
Use the Hard Reset method above if your BLU C4 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.
What is recovery mode on my BLU C4?
Recovery mode is a stripped-down menu outside the normal operating system, used to wipe data or apply updates when the BLU C4 won't boot normally. See the Enter Recovery Mode section above for how to reach it on this device.