I add extra memory to my Android Phone of Poco X3 I understand it's complicated to format that extra memory as another internal and I can't really put programs over there. But can I at least got the data over there encrypted? For example, if my internal memory is full I want to send some pics over there. How do I do so? Is there a way that's not too complicated? Actually if I can install some programs on the extra memory that would be great too. Lots of programs are rarely used.

My phone is a Xiaomi Poco X3 pro, running Android 12 (QKQ1), and it says it has MIUI Global 13.0.4 stable. Firefox is version 118.1.1. With Firefox, I am able to access the internet through Wi-Fi, but not using mobile data. With Chrome, both work. I have checked the permissions (Wi-Fi and mobile data are allowed), and even deleted and re-installed Firefox, and also reset the AP settings associated with my SIM card. Nothing helped. I should say that in the past no such problems had occurred, but I do not know when exactly this problem started to occur. Another observation is (and I am not sure whether that could be related) that some apps seem to sometimes lose network connectivity until I restart them. For example, I have a public transport app to search for connections and buy tickets, which sometimes hangs until I remove it from memory and restart it. This problem seems not to occur with other people using the same app at the same time and place (but on another phone). What else can I check to solve this problem?

I tried casting Xiaomi Poco X3 to my Windows 10 and Windows 11 but it doesn't work. When I try to do that, I got this message. Other smartphones can do that just fine. I tried the solution mentioned on [Reddit thread](https://www.reddit.com/r/PocoPhones/comments/k5t1nc/screen_cast_does_not_seem_to_work_on_x3_nfc/) but not helping. I wonder what I should do. Note: I ended up using Airdroid and some alternatives. It's working fine. So I wonder why something that worked fine with Airdroid doesn't work with official companies. Note: I tried again with another software called Miracast 4k the result is the same Other phones work just fine

I bought SD card. However, the SD card is completely useless. I cannot move any apps to that. Sure I can store some files there but that means it doesn't get filled automatically. My main memory is filled with so many things which is why I bought that SD card. I've heard that if I format the SD card in a certain way then I can move apps but I don't know how. My smartphone is poco 3c