AST SpaceMobile plans to launch satellites for its direct-to-smartphone broadband constellation every one to two months starting in July, aiming to begin beta services for AT&T and Verizon in the United States before the end of the year.

Five launches across multiple providers have been contracted over the next six to nine months, the Texas-based venture announced May 12 during earnings results.

India’s GSLV rocket is slated to carry AST SpaceMobile’s first Block 2 BlueBird satellite, which the operator said is scheduled to ship from its Texas facility in June.

Avellan said in November that two Falcon 9 launches would likely follow the initial Indian launch, with later missions using Blue Origin’s New Glenn rockets, whose larger fairings can accommodate up to eight Block 2 satellites per flight.