How to enter unlock code LG-MG160 MG161 KG270 KG271 KG275 KG276 KG278 KG288 KG370 KG375

Phone is locked but does not as to enter code:
1. insert any wrong Sim-Card in phone
2. you will see on LCD: "insert correct sim"
3. type unlocking code and press Call "Green" button
4. wait for few seconds - phone will restart and unlocked