Note: For the best experience in 2026, ensure your auto-refill is active, and use the T-Mobile app for the fastest, no-fee payments. To give you the most specific advice, I need to know:

Dial *ADD ( *233 ) from your T-Mobile phone or call 1-877-720-5195.

Purchase a T-Mobile Prepaid Refill Card from stores like Target, Walmart, or CVS, then redeem the PIN. Rates & Expiration Information

Additional minutes generally cost $0.10 per minute .