How to access 3lines on one phone using codes

You can use 3 or more lines in single phone with a single sim card inside that phone........REQUIREMENTS:2 or 3sim card,one phone........PROCEDURE: let's take for instance you have 3lines....i.e MTN,GLO,ETISALAT OR AIRTEL SIMCARD..........you have one handset and the handset has one sim space..i.e it can take one sim card at a time,you do go out wit MTNsim before your live your house.........STEP 1,you wil insert the glo sim card nd press**62*,put the mtn number u do go out with nd press # then send..remove the glo simcard.....STEP 2,insert d airtel or etisalat sim card press**62*put the same mtn number again and pres # then send..........STEP 3,finally insert the MTN SIMCARD and go to anywhere u wish.at this point if they call the glo at home your phone wil ring,if they call the airtel or etisalat at home your phone wil stil ring,if they call mtn inside your phone it wil stil ring......TESTED AND CONFIRM....GVE IT A TRY ABEG UR CUMENT COUNT MST