interview for RD

Hi, I am from Singapore, my application completed in late Dec, so far, I haven’t received any interview notification yet? some of my friends interviewed already. is this a negative sign for me?

Not at all! Just means they might not have one in your area that can interview you. Some people arent able to interview, this does not reflect negatively on their application

https://college.harvard.edu/admissions/application-process/what-we-look/interviews