Hard Reset via Recovery — Asus Zenfone 2 Deluxe ZE551ML
Optimized for Zenfone 2 Deluxe ZE551ML (Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI)
Factory Reset from Settings — Asus Zenfone 2 Deluxe ZE551ML
Optimized for Zenfone 2 Deluxe ZE551ML (Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI)
Enter Recovery Mode — Asus Zenfone 2 Deluxe ZE551ML
Optimized for Zenfone 2 Deluxe ZE551ML (Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI)
FRP Bypass (Google Lock) — Asus Zenfone 2 Deluxe ZE551ML
Optimized for Zenfone 2 Deluxe ZE551ML (Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI)
Why reset your Asus Zenfone 2 Deluxe ZE551ML?
A hard reset on the Asus Zenfone 2 Deluxe ZE551ML fixes boot loops, forgotten PINs and persistent lag. Using Volume Down + Power, you can access recovery mode and 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 Asus Zenfone 2 Deluxe ZE551ML?
Yes. A hard reset (also called a factory reset) erases all apps, photos, messages, and accounts, returning the Asus Zenfone 2 Deluxe ZE551ML to its out-of-box state. Back up anything you want to keep before starting.
Does resetting the Asus Zenfone 2 Deluxe ZE551ML 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 Asus Zenfone 2 Deluxe ZE551ML?
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 Asus Zenfone 2 Deluxe ZE551ML?
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 reset my Asus Zenfone 2 Deluxe ZE551ML?
Use the Hard Reset method above if your Asus Zenfone 2 Deluxe ZE551ML 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.
How do I format my Asus Zenfone 2 Deluxe ZE551ML?
"Formatting" and "factory resetting" mean the same thing for the Asus Zenfone 2 Deluxe ZE551ML — both erase all data and restore default settings. Use whichever method above matches your situation.
What is recovery mode on my Asus Zenfone 2 Deluxe ZE551ML?
Recovery mode is a stripped-down menu outside the normal operating system, used to wipe data or apply updates when the Asus Zenfone 2 Deluxe ZE551ML won't boot normally. See the Enter Recovery Mode section above for how to reach it on this device.