HOW TO CHECK UR PHONE NUMBER ON mtn airtel etisalat glo network

1) MTN Dial  *663# or Dial *123 * 1 * 1 * #
.2) ETISALAT  SimplyDial *248# and your number will bedisplayed
.3) AIRTEL  To check and know your mobile phone number onAirtel, dial *121# Follow the onscreen instruction
.4) GLODial *135*8# on your Glo enabled phone and your number displays on your screen.