@baillaw , could you explain me the benefit use the string instead of enum defined in <system_info.h>?
From https://review.tizendev.org/gerrit/gitweb?p=framework/api/system-info.git;a=blob;f=include/system_info.h;h=9def5270db1beb4b2c1d9066bf2c8806ba62a145;hb=refs/heads/master, I could see those enum are still there, can be used.