I made an upvote for a comment that pointed me through the Stack Exchange Android app. Later I thought of getting back my upvote and I tried to do that, but that option (upmark) is not available. Meanwhile I tried to do that other comment that is pointing to some other person I'm able to get back or see that upmark.
Can someone suggest me how to get back my upvote through my handset? If that option is not available then it could be a bug or request that definitely should be available since the user wants these kind of basic options in the app as well.
A comment pointed me to:
A comment pointed to others: