I have XIAOMI Redmi 6 phone, model M1804C3DG. Android version: 8.1.0, kernel version: 4.9.77+ . There is no options in the menu to remove or change the pin of the sim. I have enabled developers options too, but no options are displayed related to the pin of the sim. If I insert this sim in another phone (ios operating system), the options to remove or change the pin is displayed in the menu, and it works: this means the sim works properly. How to remove the pin, using this XIAOMI Redmi 6 phone? Thank you

I am not able to access the internal SD card of my Redmi 6 Pro mobile which runs MIUI version 11.0.5.0 and Android Version 9 PKQ1.180917.001. In settings it is showing storage 64 GB. However when I try to access the files, it is saying that /sdcard is not mounted. The "df -h" command in a terminal emulator shows that "/dev/block/dm-2" is mounted on "/data". But I am unable to access it. My applications are running smoothly except that it is unable to support any storage requirement and not able to retrieve the data already stored in the internal storage. Please note that my issue is with the internal memory and NOT the external memory card. In fact, I am also not able to access any external SD card, if provided. Edit: As per the suggestion by @beeshyams, I installed "Storage Isolation" app from the given link and it gave the following warning. "Incompatible storage structure detected. The storage directory of current user is /sdcard instead of /storage/emulated/0........". It seems that if I mount the sdcard to the correct location, the problem may be solved. But how to do it?

I bought my old Redmi 4A in China less than two years ago. I never installed most of the Google infrastructure on it. I did upgrade to MIUI 10. I just bought a Redmi 6 in Taiwan so it does have all the Google infrastructure and lacks some of the Xiaomi and/or Chinese internet apps etc. Recently I noticed if I swipe right on the home screen on the 4A I see among other info the number of steps I've walked today. I did not have a step counter app installed . The 4A had very little storage so you always delete apps you don't use. On my new Redmi 6 I don't see the number of steps I've walked. How can I enable this feature on my 6, or at least find out what app etc the 4A got this info from?