T-Mobile doesn't currently offer completely free tablets. However, they have options that can significantly reduce the cost of getting one.
If you meet the eligibility criteriaThe specific requirements and conditions that applicants must meet to qualify for a grant. for the Affordable Connectivity Program (ACP), determined by your income level or involvement in particular government assistance initiatives, you can acquire a tablet from T-Mobile for a $10 co-payment.
Plans available:

T-Mobile offerings include a range of phones, tablets, and devices with a wide range of specifications, features, and pricing options. Customers applying for T-Mobile ACP can explore their options and check what they qualify for on their tablet data plans page.
SAMSUNG Galaxy Tab S8+ 5G
- 5G Connectivity
- Ultrawide Camera for ultra-great images.
- Mindblowing Display
- Fastest S Pen Yet
- 13MP Main Camera
- 12MP Ultra-wide Front Camera
- Fast Charging (Power Adapter Sold Separately)
APPLE iPad 9th Gen
- 10.2-inch Retina Display
- A13 Bionic chip with Neural Engine
- 8MP Wide Back Camera
- 12MP Ultra Wide Front Camera
- Up to 256GB storage
- Stereo Speakers
- Touch ID
- 802.11ac Wi-Fi & Gigabit-class LTE Cellular Data
- Up to 10 Hours of Battery Life
- Lightning Connector
- Works with Apple Pencil (1st generation)
- iPadOS 15
ALCATEL Joy Tab™ Kids 2
- 8" HD Display
- Kidomi App
- Adaptive Eye Care Modes
- Parental Controls
- 4080 mAh battery
- 4G LTE connectivity
- Alcatel TKEE Bumper Case in fun Waterpark Teal color
- The tablet is kidSAFE+ Coppa certified