4G LTE Signal Booster Duo

Learn about the T-Mobile 4G LTE Signal Booster Duo. This is our first signal booster that supports 700 MHz (Band 12). If you'd like to order one, please Contact us or visit a T-Mobile Retail location.  At this time, there is not an option to order this device online.




About the device

Available to postpaid customers who have at least one bar of T-Mobile 3G/4G or 4G LTE signal.


Voice & LTE data improvement

  • Extends/improves T-Mobile’s fastest LTE network in the home.
  • Boosts signal coverage approximately 3,000 square feet.


Plug & play

  • Average device setup time is 15 minutes.
  • LTE signal indicator is visible on Window Unit.
  • Place Window Unit where you have the strongest indoor 3G, 4G, or LTE signal.
  • Place Coverage Unit where you need the signal the most, such as a home office or basement.


Deposits & fees

  • With a $25 deposit, the signal booster is loaned to qualified postpaid customers at no additional charge.
  • Upon T-Mobile service cancellation, customers return signal boosters to T-Mobile via prepaid shipping label.



Device ordering


Specs & requirements


  • Supports U1900, U2100, L1900, L2100
  • Supports Band 2, Band 4, and 700 MHz (Band 12)
Voice and data capacity

Maximum simultaneous sessions: 16 voice, 4 data

T-Mobile devices Yes - 3G/4G HSPA/4G LTE
BYOD devices Yes - 3G/4G HSPA/4G LTE
  • Minimum 1 bar of 3G/4G HSPA+ /4G LTE indoor signal
  • 3G, 4G,  HSPA+, or 4G LTE device (T-Mobile or BYOD)
  • Does not work on 2G signal
  • Will work in 700MHz (Band 12) only markets

Window Unit: Height: 6.24 inches, Width: 5.75 inches, Depth: 2.32 inches, Weight: 1.23 pounds

Coverage Unit: Height: 6.24 inches, Width: 5.75 inches, Depth: 2.32 inches, Weight: .86 pounds

In the box

Coverage Unit + power cord, Window Unit + power cord, setup guide, wall mounts