Hard Reset via Recovery — LG Viper 4G LTE LS840
Optimized for Viper 4G LTE LS840 (Android 2.3 (Gingerbread))
Factory Reset from Settings — LG Viper 4G LTE LS840
Optimized for Viper 4G LTE LS840 (Android 2.3 (Gingerbread))
Enter Recovery Mode — LG Viper 4G LTE LS840
Optimized for Viper 4G LTE LS840 (Android 2.3 (Gingerbread))
FRP Bypass (Google Lock) — LG Viper 4G LTE LS840
Optimized for Viper 4G LTE LS840 (Android 2.3 (Gingerbread))
Why reset your LG Viper 4G LTE LS840?
A hard reset on the LG Viper 4G LTE LS840 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 LG Viper 4G LTE LS840?
Yes. A hard reset (also called a factory reset) erases all apps, photos, messages, and accounts, returning the LG Viper 4G LTE LS840 to its out-of-box state. Back up anything you want to keep before starting.
Does resetting the LG Viper 4G LTE LS840 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 LG Viper 4G LTE LS840?
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 LG Viper 4G LTE LS840?
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 LG Viper 4G LTE LS840?
Use the Hard Reset method above if your LG Viper 4G LTE LS840 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 LG Viper 4G LTE LS840?
"Formatting" and "factory resetting" mean the same thing for the LG Viper 4G LTE LS840 — both erase all data and restore default settings. Use whichever method above matches your situation.
Does my LG Viper 4G LTE LS840 have a hard reset button?
Not a single dedicated button — the LG Viper 4G LTE LS840 uses a button combination instead of one labeled "reset." See the Hard Reset section above for the exact keys to press.