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Authors
Liu, Xiao Fan https://orcid.org/0000-0001-8342-4623
Wang, Zhen-Zhen
Xu, Xiao-Ke
Wu, Ye
Zhao, Zhidan
Deng, Huarong
Wang, Ping
Chao, Naipeng
Huang, Yi-Hui C.
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Funding
Funding for this research was provided by:
Bill and Melinda Gates Foundation
Major Projects of the National Social Science Fund of China (19ZDA324)
Ministry of Education of China (22YJC860026)
National Natural Science Foundation of China (62173065)
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Article History
Received: 11 July 2022
Accepted: 12 May 2023
First Online: 5 June 2023
Declarations
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: HeyTap users can voluntarily enroll in User Experience Improvement Program, and their phone use logs are transferred anonymously to the manufacturer for analysis. Aggregate-level data can be used for phone design improvements, advertisement recommendations, and other purposes including research. The user agreement clauses and collaboration letters are attached in Additional file , Sect. 8. We obtained approval from the City University of Hong Kong and Shenzhen University’s Ethical Review Boards.
: The authors declare no competing interests.
