Arm technology powers most global smartphones and the company counts Apple Inc (AAPL.O) and Qualcomm Inc (QCOM.O) as customers.
The China business is the exclusive distributor of Arm chip technology in China and develops and sells its own chip designs based on Arm.
In 2021, the China business paid Arm about $500 million, the two sources said.
“The Arm Ltd IP business part of Arm China is performing very well and we are positioned for continued growth going forward.
SoftBank and Arm China did not respond to requests for comment.