Sites like Recharge.com allow you to purchase codes that are delivered via email. How to Redeem Your Refill Card

If you are looking to purchase a new data pass or plan, T-Mobile offers several tiers for standalone hotspot devices: $10/month for 2GB of 5G data. Standard Use: $30/month for 10GB of 5G data. Heavy Use: $50/month for 100GB of high-speed data.

Once you have your PIN, you can add it to your hotspot account using these methods:

Refill your account balance using a credit/debit card, Apple Pay, or Google Pay via the T-Mobile Refill Page.

Dial *ADD ( *233 ) from your T-Mobile device to access the automated recharge center.

Log in, go to the Manage tab, and select Redeem a Refill Card .