How do you enter boost mobile promo code to your cell phone?

To enter a Boost Mobile promo code on your cell phone, open the Boost Mobile app or visit the Boost Mobile website. Sign in to your account, then navigate to the section for adding or redeeming promo codes. Enter your promo code in the designated field and follow the prompts to apply it to your account. Make sure to check for any confirmation message to ensure the code has been successfully applied.