Danger's first customer was Voice Stream, which later was acquired by T-Mobile International. Voice Stream was a small company looking for something innovative to differentiate themselves from the competition. They found that innovation in Hiptop. Danger initially treated them as a partner rather than a customer. The two companies provided valuable services to each other and the deal solidified Danger's business plan. Since Hiptop was still in development at the time of the deal, Voice Stream was able to contribute to the product design, including giving it voice capabilities, which was not in the original design.