Unlocking T-Mobile ToGo Phones
From HowardForums Wiki
Follow the guidance given for Unlocking T-Mobile Handsets
As a T-Mobile ToGo customer, you can request an unlock code for your handset after 90 days and if the account is in good standing and you have made an airtime card deposit in your account within the last 30 days. Some customers have reported success at getting the unlock codes without adding a recent refill but policy appears to be to require refill within 30 days.
Source(s): T-Mobile solutions