The Android's screen unlock pattern feature allows you to secure access your device. If you no longer remember the unlock pattern that you've set for your device, you can always sign in with your Google account. However, this solution only works when you have connection to the internet.
This tutorial will show you how to reset your Android's unlock code without internet. Please note that any data that is not backed up risks being lost.
Reset Android to Factory Settings
The only solution is to hard reset your Android smartphone to factory settings. The procedure differs from one phone model to another.
For the LG Optimus L, you need to switch it off, then press Vol Down + Home + Power. When the phone vibrates and powers on, you can release the buttons.
For the LG Nexus 4, press and hold Vol Down + Power.
For the Samsung Galaxy S1, Vol Up + Home + Power.
For the Samsung Galaxy S2, press Vol Up + Power.
For the Samsung Galaxy S3, press Vol Up + Home + Power.
For the Samsung Galaxy S4, press Vol Up + Home + Power.
For the Samsung Galaxy S5, press Vol Up + Home + Power.
For the OnePlus One, press Vol Down + Power.
For the Wiko Cink Slim, press Vol Down + Vol Up + Power.
For the Wiko Cink Peax, press Vol Down + Vol Up + Power.