T-Mobile is on a roll lately, paying subscriber’s ETFs with UnCarrier 4.0, and with a new move to pay for referrals to their network. For folks who refer their friends to T-Mo through a carrier switch, they can snag $25 per referral to spend at T-Mobile. If you are the type of person who usually recommends things to your friends and family, plus you are on T-Mobile, then this is a no brainer.