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miyahira
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Understanding RAM, SD Card and Device Memory of an smartphone

I have an Android smartphone and would like to understand what is the difference between RAM, SD Card and Device Memory.
When I check Memory Usage of my smartphone, I see those components:

RAM: 174 used      and   52 MB free

On SD Card: 492 MB used     and   3.16GB free

Device Memory: 143 MB used   and   47 MB free

I understand that "SD Card" is some external memory that you put in the Smartphone.  But how do I understand RAM and Device Memory?
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Joshua Grantom

8/22/2022 - Mon
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Shahnawaz Ahmed

Dear Miyahira

RAM is used by running processes on an as-needed basis. The biggest thing for SDK apps to note is that there is an upper bound as to how much RAM a process can consume

Device Memory is perceived to be the flash that is used to store APKs, ROM images, etc.


RAM stand 4Random Access Memory. It is d memory ur fone needs to run applications smoothly. Every file or app u open take up certain space 4rm ur RAM. Were d whole Ram is exhausted u wil have to close sum running apps to allow d running of another. Basically a fone of 1GB RAM wil allow d runnin of more apps at d same time dan a fone wit 515MB RAM while ur internal memory is d fone memory were u store ur music, videos, games etc, d internal memory can be expanded using memory card of ur choice size.
Hop dis helps
miyahira

ASKER
Shahnawaz,
I do appreciate your help, but please, write in correct English. It's very hard to understand your last paragraph.
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Shahnawaz Ahmed

@Joshua > You right Device memory can not expand however If you have 8 GB Device memory + 8 GB SD that make usable memory Total = 16 GB , Out of 16 GB apx. 4 GB occupied by OS & Flesh
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William Peck
Joshua Grantom

Yea, completely aware of how that works. That wasn't the question asked in the original post. Over explaining an answer does not help them understand.