The problem is that the Galaxy A71 is divided by two security patch: one is that of last October 2020 and November 2020. Those who got the October security patch were ultimately blocked to have the security patch from January 2021 to February. And Those who were stuck on the last November security patch received the November patch last December and couldn't get the January patch last February and by several regions they finally got the February patch. on One ui 3.1. This is the main blockage. India is one of those different regions that were blocked by the October 2020 patch and get the January patch last February. So India has to wait until May to get the April patch on One ui 3.1.
For example, our region was stuck on the November 2020 patch. We did not receive the January patch last February. We received the February patch in March which is one ui 3.1