Unlocked Surface 3 LTE now on sale in the US at AT&T and Microsoft stores, arrives at T-Mobile July 31
Context & Ripple Effects
The US arrival of the unlocked Surface 3 LTE closes out a rollout that began when Microsoft put the cellular model on sale in Germany and the UK in early July with wider availability promised 'in coming weeks'. AT&T was confirmed days ago as the first US carrier to offer the device with 4G LTE; now it is live at AT&T and Microsoft stores, with T-Mobile following July 31.
What matters beyond the SKU is that Microsoft is selling the tablet unlocked rather than locked to one carrier — a distribution choice that keeps the LTE model available across networks and sets the pattern its later hardware would follow.
First-order effects
- US buyers can purchase the Surface 3 LTE unlocked today at AT&T and Microsoft stores, and Verizon-style exclusivity is avoided since T-Mobile picks up the same device on July 31.
- AT&T gets a two-week head start as the sole carrier stocking the device before T-Mobile joins, after being first to commit to carrying it.
Second-order effects
- T-Mobile gains a Windows tablet for its lineup without an exclusivity fight, while AT&T's early-window advantage pressures both carriers to compete on data plans rather than device lock-in.
- Microsoft deepens its carrier relationships ahead of the holiday season — the same AT&T channel would soon also carry the Lumia 950 and Samsung Galaxy View.
Third-order effects
- Cellular connectivity stops being a carrier-locked add-on and becomes a standing configuration option across the Surface line — a path that leads to the optional 4G LTE Surface Pro in 2017 and the business-focused LTE Advanced model Microsoft later announced.
- If unlocked-plus-multi-carrier distribution holds as the template, carriers' role in Windows tablet sales shifts from gatekeeper to retail channel, weakening the subsidy-lock model for PCs.
The trend: Microsoft is making built-in LTE a recurring, multi-carrier option across successive Surface generations rather than a one-off carrier exclusive.