Contact Sprint CS and request the unlock code. If you have met your contract terms they will unlock your phone. Now will Cricket take your phone is the next question.

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My PDA & SmartPhone History: Palm Vx; M505;TungstenT; NX60; iPaq 1910; I700; Treo 600; hx4700; MPx220; hw6515, Treo 700w, XV6700,, Treo 700p, Moto Q Black, Moto Q9h, BlackBerry 8310 & BlackBerry 8820, BlackBerry Bold, BlackBerry Storm 9530.