How long am I going to wait ?
The waiting time for receiving an unlock code for Lenovo phones starts from 1 to 3 working days.
Lenovo Vibe K4 Note
Unlocking instruction for Lenovo Vibe K4 Note ?
1. Insert SIM card from a different network ( not the one in which the device works).
2. Phone will ask to enter a network unlock code.
3. Input the unlock code that you received from sim-unlock.net.
4. Phone is unlocked and can work in any network.