Table 3.

Summary of the qualitative analysis on the feasibility and acceptability evaluation.

Domains	Feasibility and acceptability assessment questions	Typical answers
WeChat versus short message service (SMS) text messages	How do you like the articles sent via WeChat and reminders via SMS text messages?	“I think they are helpful, I learned a lot about the disease that I had not known before.” “All of my friends are using WeChat instead of short message now. So I prefer the articles sent via WeChat.”
Content of the articles	What topics are you most interested in?	“I follow the latest progress of HIV treatment.” “I have been feeling awful since I realized I was infected. I feel my life is ruined. Anything to help me feel better would be helpful.” “In my opinion, the articles are not very targeted. If you can tell us something specific for us gay patients, it will be useful.”
Format or style of the articles	What kind of format or style of the articles do you like?	“There is too much information on the internet. Sometimes it can be very confusing. I hope the articles can be professional and authoritative.” “Well, reading words is kind of boring, it’d be better if I can listen to it, and video would be perfect.”
Intervention adherence	To what extent did you read the articles and messages?	“I use WeChat every day; reading articles on WeChat is convenient for me, so I read most of them. But I often missed messages via SMS as I do not use SMS much. Questions you asked are difficult for me. If I do not know the answer immediately, I do not answer them.” “I have subscribed many Subscription Accounts; they send me articles every day, so I do sometimes miss some of your articles.”
Satisfaction	Are you satisfied with our intervention?	“Of course, I am so pleased that someone like you cares about people like me.”
Suggestions	Do you have any suggestions for our mHealth intervention?	“If I can make an appointment and get my testing results via the system, it will save me a lot of time.” “I didn’t have any motivation to read your articles. Maybe you can have more appealing titles for your articles.” “Repeated messages became burdens. I do not trust machine. What I really need are communication and interaction with real people.”