Step 1. Press power with volume up.
Step 2. When you see triangle sign and command.
Step 3. Press hold power followed by Volume up briefly.
Step 4. When fastboot mode display scroll down to More.
Step 5. Use power button and select, the next screen is wipe data.
Step 6. Use the power button to select wipe data.
Remember to backup the phone in case of phone brick.
You suppose to have the google account that is the email details because after reset the phone will require you to bypass frp.
You can see Infinix Smart 2 FRP Bypass solution here.
Remember to get your WIFi or hotspot ready.
After successful formatting or erasing you have to set up and configure the phone.
This solution goes to Infinix Smart 2 that boots normal but menu buttons and icons disappear.
You can use our comments section for more.