Hard Reset on Lava 515

How to Hard Reset on Lava 515 Iris?

Make sure you turned off the device.
Hold down the Volume Up key and the Power button.
Wait until the Boot Mode appears and then release the keys.
Use the Volume keys to open the Recovery Mode.
When the Android logo appears, press the Power button.
Select "Wipe data/Factory reset" using the Volume Down key to navigate and the Volume Up key to confirm.
Choose "Yes" using the same keys.
Press "Reboot system now" to complete the process.
Nice work! After these actions, the data on your device will be deleted.