[Q] Use of ROM (Memory) in Android Devices - General Questions and Answers

I am going to ask very basic question regarding ROM in Android Device.
Searched for Android Devices and found as below (different devices):
1) Memory - 1 GB RAM, 4 GB ROM
2) Memory - 1 GB RAM, 8 GB ROM
3) Memory - 1 GB RAM, 16 GB ROM
because of ROM size, prices are different from one another.
Is it just the normal internal memory which they are labeling as ROM, or does it have a different purpose altogether. Because once phone is up and running the OS is loaded in RAM and not ROM.
If OS is installed in ROM, it may occupy 1 or 2 GB, what is the use of remaining space.
1) user can install app of his/her choice
2) app data storage
3) cache / delvik cache
3) anything else
if someone purchase with Memory - 512 MB RAM, 4 GB ROM, what approx Internal Storage he/she will have to install apps?
I would appreciate your help and response.
Regards.

Related

Samsung Galaxy S advance internal storage problem

hi guys,
i bought this new one phone and i am very disappointed about a strange issue here :
my phone is supposed to have 8GB INTERNAL STORAGE and 768 MB RAM but mine has (from system info) 4 GB INTERNAL STORAGE and 498 MB RAM, also on the box is written 8GB.
The firmware is up to date with Gingerbread 2.3.6 (probably updated from the seller) and i can't find anything about this issue on the net or about a new limited S advance like this.
I wrote also to samsumg and the seller but no response until now.
Also Samsung Kies detect internal storage as 4 GB .
Is it possible ?? Any advice ??
Thank you so much.
PDA I9070XXLD1
PHONE I9070XXLD1
CSC I9070OXFLC2
COA
build info : Sun Apr 1 19:21:57 KST 2012
SSN I9070GSMH
FCC ID A3LGTI9070
System, system, system
Data is taken up by system apps, and some RAM is reserved for system processes
Sent from my MB508 using xda premium
gagdude said:
System, system, system
Data is taken up by system apps, and some RAM is reserved for system processes
Sent from my MB508 using xda premium
Click to expand...
Click to collapse
Thanks for the response,
so you mean that a part of ram is system reserved (and this is reasonable) but if the system take also 50 % of the declared storage seems to be very strange.
Considering that i have 4 GB and 2 GB ROM where is the rest ?
I would like to hear another S advance owner.
So i have in real life 7,8 GB - 1.95 GB ROM is 5.9 GB remaining storage but i have only 3.9 GB effective mass storage, i can't find the other two.
Thanks again for your time.
Bye
roberto1212 said:
Thanks for the response,
so you mean that a part of ram is system reserved (and this is reasonable) but if the system take also 50 % of the declared storage seems to be very strange.
Considering that i have 4 GB and 2 GB ROM where is the rest ?
I would like to hear another S advance owner.
So i have in real life 7,8 GB - 1.95 GB ROM is 5.9 GB remaining storage but i have only 3.9 GB effective mass storage, i can't find the other two.
Thanks again for your time.
Bye
Click to expand...
Click to collapse
Ok, let's say that i figured it out as follows :
USB mass storage 4 GB - 3.91 GB real
ROM memory 2 GB - 1.95 GB real
SYSTEM/USER storage 2 GB - 1.95 GB real
-------------------------------------------------------------------------------
TOTAL 8 GB - 7.81 GB real
so 8000 MB / 1024 = 7.81 GB
it is like buying a car with 8 seats but 2 can't be accessed due to engine space, 2 seats are only for the owner and his wife and the remaining seats are for the rest of the family. :laugh:
The producers make always things more complex.
Thank you.
samsung s advaced
roberto1212 said:
Thanks for the response,
so you mean that a part of ram is system reserved (and this is reasonable) but if the system take also 50 % of the declared storage seems to be very strange.
Considering that i have 4 GB and 2 GB ROM where is the rest ?
I would like to hear another S advance owner.
So i have in real life 7,8 GB - 1.95 GB ROM is 5.9 GB remaining storage but i have only 3.9 GB effective mass storage, i can't find the other two.
Thanks again for your time.
Bye
Click to expand...
Click to collapse
yesterday brought the s advaced its internal memory is showing 3.8 gb and in its phone cover its 8 gb . i went to the store to ask and i got a reply that rest is system mem so u cant see it.
Internal memory showing only 3.94 gb instead of 11.5 gb.
irvin calicut said:
yesterday brought the s advaced its internal memory is showing 3.8 gb and in its phone cover its 8 gb . i went to the store to ask and i got a reply that rest is system mem so u cant see it.
Click to expand...
Click to collapse
Hi....my samsung galaxy s advance showing 4 gb instead of 11.5 gb.....after i root and then reinstall the firmware.....later it shows the 11.5 gb but now it showing only 4 gb.....can u suggest any method.
Memory internal storage repartition
irvin calicut said:
yesterday brought the s advaced its internal memory is showing 3.8 gb and in its phone cover its 8 gb . i went to the store to ask and i got a reply that rest is system mem so u cant see it.
Click to expand...
Click to collapse
As above:
for a galaxy s advance of 8gb
USB mass storage 4 GB - 3.91 GB real
ROM memory 2 GB - 1.95 GB real
SYSTEM/USER storage 2 GB - 1.95 GB real
TOTAL 8 GB - 7.81 GB real
because 8000 MB / 1024 = 7.81 GB
-----------------------------------------------------------------
for a galaxy s advance of 16gb i figured it out as follow
USB mass storage 12 GB/1048 - 11.45 Gb real (here it might shows 11.5 Gb)
ROM memory 2 GB - 1.90 GB real
SYSTEM/USER storage 2 GB - 1.90 GB real
-------------------------------------------------------------------------------
TOTAL 16 GB - 15.26 GB real
Notice that i divided the first galaxy with 1024 bit and the second with 1048 bit, the reason is that each producer use a different method of calculation with a considerable difference from storage to storage.
Also consider that the GingerBread system has its internal memory divided as system/user partition and a usb mass storage partition.
I know that if you try a ICSandwich system this method is no longer used so you will have only one partition instead of two
Usb memory show 4 GB after format
I Purchase samsung galaxy advance 2 week ago.
my Samsung GT-i9070 have 16 GB internal space. when i purchase it shows 11.5 as usb storage. and after format it shows only 3.91 GB in Usb storage. plz help me out....:crying:
Low internal memory
brain.teaser said:
I Purchase samsung galaxy advance 2 week ago.
my Samsung GT-i9070 have 16 GB internal space. when i purchase it shows 11.5 as usb storage. and after format it shows only 3.91 GB in Usb storage. plz help me out....:crying:
Click to expand...
Click to collapse
same problem wid me....
brain.teaser said:
I Purchase samsung galaxy advance 2 week ago.
my Samsung GT-i9070 have 16 GB internal space. when i purchase it shows 11.5 as usb storage. and after format it shows only 3.91 GB in Usb storage. plz help me out....:crying:
Click to expand...
Click to collapse
please go to Settings - Applications - Manage applications and tell me how much memory is displayed under every tab (Downloads/All/SdStorage/active) and after this go to Info and tell me what is there (Storage Memory / System Memory).
RAM?
I have the same problem.
What about RAM? Where is the rest of it? I have only 515 RAM? See the attached picture.
And these two are the same thing.
ROM memory 2 GB - 1.95 GB real
SYSTEM/USER storage 2 GB - 1.95 GB real
Everything is ok
rlarry said:
I have the same problem.
What about RAM? Where is the rest of it? I have only 515 RAM? See the attached picture.
And these two are the same thing.
ROM memory 2 GB - 1.95 GB real
SYSTEM/USER storage 2 GB - 1.95 GB real
Click to expand...
Click to collapse
Ok ! the RAM is only 512 Mb because the rest is taken as shared memory for the system like processor and/or graphic or system cache.
In the attached pictures notice that the TAB "On SD card" means the internal storage of the phone and not the external storage card.
For the external storage card you must consider the other menu under settings->memory at "Storage" and also there is displayed the "USB Storage" that is the same data of "On SD card".
The misleading here is that they refer to the same data with two different names "On SD card" and "USB storage", i dont't know why but that's it.
Pratically you have to sum :
ROM memory 2 GB - 1.95 GB real (the ROM space is not displayed anywhere in the settings)
SYSTEM/USER storage 2 GB - 1.95 GB real (system storage)
USB mass storage 4 GB - 3.91 GB real (USB storage or On SD card) thi may change on the 16 GB version
After all of this there is the real EXternal SD card if you buy one.
Bye.
http://forum.xda-developers.com/images/icons/icon14.gif
Guys there's new kernel version for those having
network and battery issues kindly update your
device from settings software update ...new
kernel 6mb....kindly enjoy the beast now...who
couldn't due to batteryy network and lag issues
roberto1212 said:
Ok, let's say that i figured it out as follows :
USB mass storage 4 GB - 3.91 GB real
ROM memory 2 GB - 1.95 GB real
SYSTEM/USER storage 2 GB - 1.95 GB real
-------------------------------------------------------------------------------
TOTAL 8 GB - 7.81 GB real
so 8000 MB / 1024 = 7.81 GB
it is like buying a car with 8 seats but 2 can't be accessed due to engine space, 2 seats are only for the owner and his wife and the remaining seats are for the rest of the family. :laugh:
Click to expand...
Click to collapse
It's more like the car ad says "seats 3 in the rear". Your family members each weigh 600 pounds, and only 2 of them can fit in the back seat.
Drive and manufacturers specify drives in gB (g = 1 billion) because the number is larger. The rest of the industry uses GB (G = 1024 * 1024 * 1024) because computers use powers of 2. Some memory manufacturers use something in between, a unit that's the number of bytes divided by 1024.
The actual number of bytes available is the same, they just manipulate the units to make the number larger. (It's like telling you I'm giving you 1,000 "Currency Units" instead of 10 "currency units" - where "Currency Unit" = penny and "currency unit" = dollar. It's the same amount of money in either case.)
BTW, it's 8/(1.024 * 1.024 * 1.024) to go from 8gB to 7.45GB.
USB Mass Storage settings
Hi,
how do i mount USB Storage on a linux machine, the phone keeps connecting with MTP ... i have enabled USB Debugging mode, but to no avail.
it mounts as a camera with 3.3GB space.
Samsung Galaxy S Advance, 16GB, kernel 2.6.35.7-1194396,Baseband - I9070DDLI1
help!
Galaxy s Adv - 16GB - internal memory
patlip said:
same problem wid me....
Click to expand...
Click to collapse
Please tell me how the memory is divided in your phone (16GB)
Internal memory = ?
USB memory = ?
I need to install the following app on a Galaxy S advance - 16GB.
Wiki encyclopedia - Offline (needs 3.6 GB) internal memory to install.
will it get downloaded (3.6gb) to internal memory ?
plss help...
Look fella!
When my s advance was gingerbread(2.3.6) it showed me 450 to 500 somethin' mb ram but after updating it to jellybean(4.1.2) I got 670 mb ram...... There is nothing like limited s advance.
Regarding the storage space...
I have a 16 gb s advance and it shows 11.5 gb of storage space..rest is its 1.97 gb rom and remaining is used up by touchwiz(samsung's launcher)
and the system...Therefore the 8 gb model of s advance will show to around 4 gb of internal memory..
I am happy with my phone and i am currently using cyanogenmod 10.1 which makes it BEAST!!!!!!
Help needed
bro i am facing the same problem as u faced,i also rooted and also upgraded the firmware using odin but it is showing now my internal memory as 3.9 gb instead of 11.5 gb .so if u had fixed the problem for ur device plzzz help me for fixing it for mine plzzzzz
zubairamd said:
Look fella!
When my s advance was gingerbread(2.3.6) it showed me 450 to 500 somethin' mb ram but after updating it to jellybean(4.1.2) I got 670 mb ram...... There is nothing like limited s advance.
Regarding the storage space...
I have a 16 gb s advance and it shows 11.5 gb of storage space..rest is its 1.97 gb rom and remaining is used up by touchwiz(samsung's launcher)
and the system...Therefore the 8 gb model of s advance will show to around 4 gb of internal memory..
I am happy with my phone and i am currently using cyanogenmod 10.1 which makes it BEAST!!!!!!
Click to expand...
Click to collapse
Me too. How to fix it?
---------- Post added at 10:51 AM ---------- Previous post was at 10:21 AM ----------
PraDROID said:
Please tell me how the memory is divided in your phone (16GB)
Internal memory = ?
USB memory = ?
I need to install the following app on a Galaxy S advance - 16GB.
Wiki encyclopedia - Offline (needs 3.6 GB) internal memory to install.
will it get downloaded (3.6gb) to internal memory ?
plss help...
Click to expand...
Click to collapse
me too, how to fix it

Storage problem

As you can see in the screenshots below ~1,3gb of internal storage are missing. ( 0.53 GB free + 2.89 GB apps + 0.06 GB the rest of things = 3.48 GB. Total space 4.74 GB - 3.48 GB = 1.26 GB missing.)
If you look closely there is an anomaly. In list the Miscellaneous file takes only 26.69 mb internal storage but in the graphic look like they are taking much more. I guess there is the missing internal storage.
I am full stock with the latest firmware installed. I have the 4,7 inch model.
I tried to factory reset and wipe cache. At first was ok, but after i remove the bloatware and install my apps same results.
I use cleanmaster,powercleaner but with no result.
I looked up in every folder in internal storage but i did not find anything that can take this space.
What can i do without root? I don't wanna root right now.
tudy88 said:
As you can see in the screenshots below ~1,3gb of internal storage are missing. ( 0.53 GB free + 2.89 GB apps + 0.06 GB the rest of things = 3.48 GB. Total space 4.74 GB - 3.48 GB = 1.26 GB missing.)
If you look closely there is an anomaly. In list the Miscellaneous file takes only 26.69 mb internal storage but in the graphic look like they are taking much more. I guess there is the missing internal storage.
I am full stock with the latest firmware installed. I have the 4,7 inch model.
I tried to factory reset and wipe cache. At first was ok, but after i remove the bloatware and install my apps same results.
I use cleanmaster,powercleaner but with no result.
I looked up in every folder in internal storage but i did not find anything that can take this space.
What can i do without root? I don't wanna root right now.
Click to expand...
Click to collapse
i am having the same issue, dont know what to do:S
I'm gonna guess the both of you are running the "8"gb versions? It's possible you may have an actual 16gb nand chip, just partitioned to 8.
If you are, then I would highly advise you repartition the memory and unlock the 16gb. I also think it has been mentioned somewhere that there is some 1.+gb backup file or something or other that appears to be useless. I've seen some users at the russian site 4pda complaining of the same issue.
The bottom line is you're going to have to root to fix the issue. Re-flashing the software via the mobile update app will just lead you to the same situation.
There is a flashable zip in the repartition thread in the dev section, that makes it pretty painless through TWRP. It will check to see what actual size nand chip is present.
correction: i have a 16 GB 5.5"
Hi, I'm french and sorry for spelling.
Same concern on Idol 3 (5.5) 16Gb
Parameter> Storage
(Miscellaneous) different between the graphic and its size indicated
Coordialement.
I have the same problem, what is the solution for this?
Solution here: http://forum.xda-developers.com/idol-3/help/space-device-t3276090#post64473286

Memory Optimization

Hi all!
I have a N5 820 16GB vers.
ROM: xTraFactory (Latest MM)
Kernel: ElementalX
In my others smartphones, I liked include the system application updates in the system memory using Link2SD , but now this is impossible because my memory system is almost fully complete.
As a result, now I have several system applications occupying system memory and internal memory.
What do you recommend?
Do I remove and reinstall applications so that only occupy internal memory? ummm...
thanks!

android rom update file edit

Hello,
I have an android unit >>>> allwinner a20 cpu, 1 Gb ram, android 4.4, 16Gb memory (630Mb device internal memory, 12,19Gb device sdcard memory, 3,19Gb android reserved)
After installing 3 or 4 apk i get not enough memory message and cant install more apk to my android. Because internal memory gets full.
I have my car android unit rom file.
Can someone help me that,
edit the rom file then arrange the partitions as
partition 1 >>>630 Mb to 7Gb???
I tried to use link2sd but it didnt work. Device is rooted.

Combine the SD Card with System Storage?

All of my Note II's storage is being taken up by newer versions. It has about 15 gigabytes of RAM storage, which is all being taken up by the system (likely still not enough), however I do own a 128gb SD Card, and I would like to know if I can combine both of the storages FOR THE SYSTEM FILES like RAID. I know that I can do this with media files, however I'd like to be able to do this with system files. Currently it runs Lineage 14.1 because it has just enough storage for Android 7 for functionality (without GApps and most apps crashing quickly), and LineageOS 16/Android 9 (compliled for Note II) doesn't run at all. So, would it be possible to use an SD card for system files?
I doubt that the Galaxy Note II has
1. 15 GB RAM -> 2 GB will be true
2. the "Adoptable Storage" feature what allows the Android OS to format an external storage media as permanent internal storage is built-in: Samsung typically doesn't support this feature, that was introduced with Android 6, by default.
jwoegerbauer said:
. 15 GB RAM -> 2 GB will be true
Click to expand...
Click to collapse
I didn't mean RAM, typo, I meant storage

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