T-Mobile U.S. offers a Refer a Friend program that helps the existing customer earn a $50 referral coupon for each referred friend.
Current Sprint customers sign in to the Referral Rewards program and then refer friends via email, text or social media. Friends accept the offer, activate a new line and then register their phone number. For each new account, you both are rewarded a $50 Prepaid Mastercard®, up to $500 a year!
In case main referral dosen't work, try one of these :)
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