Unlock ZTE Z990G TracFone
1. Download and install drivers if you haven't done it yet
ZTE_Handset_USB_Driver - Download - 4shared
2. Take out memory card and SIM card and turn your phone on
3. Go to dialer, type *983*87274# and select "only Diag"
4. Connect phone to computer and wait until drivers are installed
5. Unplug the usb cable and plug it back
7. When you feel ready, Click " RUN" button