OpenPhone is a startup building the modern phone system for small businesses.

OpenPhone's mission is to enhance the way people communicate at work and bring the phone out of the stone age. 

OpenPhone was founded in 2018 by Mahyar Raissi and Daryna Kulya. The company is headquartered in San Francisco, California.


OpenPhone does everything you want out of a modern phone, but is also built with messaging and collaborative tools to meet the needs of businesses, teams, and professionals that other modern phone apps don't offer.


OpenPhone has grown rapidly through bottom-up viral adoption among startups and small businesses. In just two years, the company has served thousands of businesses and professionals around the world. OpenPhone has the highest rating of any business phone app in Apple's App Store.


OpenPhone is backed by Tiger Global, Craft Ventures, Y Combinator, Slow Ventures, Kindred Ventures, Garage Capital, Worklife Ventures, 122WEST Ventures, and others. The company raised $40M in Series B round on Apr 07, 2022. This brings OpenPhone's total funding to $56.1M to date.



  • Year founded: 2018
  • Funding Info: $56.1M over 4 Rounds (Latest Funding Type: Series B)
  • Yearly Revenue: NA
  • Employee Size: 51-200
  • Business Valuation: NA
  • City/Town: San Francisco
  • State: California
  • Country: United States
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