AT&T Build-A-Plan goes live on May 27, 2026. The new prepaid offering starts at $15 per month for unlimited talk and text. Customers layer in only the data they actually use — no bundle bloat required. AT&T is positioning it for people who resent paying for data they never touch.
The base tier covers unlimited calls and texts with 1GB of data included. Subscribers can add 5GB for $5 per month, 15GB for $10, or unlimited SD data for $20. Customers who want full 4K streaming on unlimited data pay $35 per month for the top tier. Hotspot is also optional — 5GB runs an extra $5 per month and 50GB costs an additional $20.
AT&T Build-A-Plan: What to Know Before Signing Up
There are a few catches worth knowing before you commit. First, this is a prepaid-only plan, sitting outside AT&T’s main postpaid lineup and ineligible for standard promotions or perks. Additionally, data does not roll over from month to month. Video streaming below the unlimited tier is capped at 2Mbps on 5G or 1.5Mbps on 4G. That covers standard video but not HD. The plan is single-line only at launch, requires an unlocked eSIM-compatible smartphone, and enrollment is online only. Consequently, customers who prefer in-store setup or want a family plan will need to look elsewhere.
How It Compares to Google Fi and Other Budget Carriers
The structure resembles Google Fi’s Flexible plan, which charges $20 per month as a base before data costs. However, AT&T’s entry price is $5 lower. Unlimited talk and text are included from the start — not metered separately. That makes AT&T Build-A-Plan one of the more competitive entry-level prepaid offers from a major US carrier.
For light data users, the math is straightforward and the savings are real. Still, loading up add-ons pushes the monthly cost toward what traditional unlimited plans already charge. AT&T’s own postpaid unlimited plans start around $35 per line on multi-line accounts. Currently, Build-A-Plan targets single users who want genuine flexibility — not families or heavy streamers. Whether that niche is large enough to drive meaningful subscriber growth remains to be seen.
