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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

[Q] Internal Storage Space Not Correct?

P1113, JB 4.2.2 Stock Rom, CWM, rooted running and no obvious system problems.
My understanding is that there is supposed to be 4.5 gb or internal storage, or /storage/emulated/0. I have an actual 600mb of items on the internal storage space. I verified this by copying all the files/folders to pc and checking the size. Root Explorer reports same folder size for /data/media.
Settings->Storage indicates that I have 4.5 gb internal storage, 2.5 gb is free and there is 2 gb not accounted for. I should have 4 gb free? I reformatted /sdcard with CWM and still have only about 2.5 gb free and not 4.5.
2.5 gb of usable internal storage seems much to low. Flashing the rom with Odin did not change this problem. On a practical basis, I cannot install a GPS navigation app because it uses >2.5 gb.
What might the problem be? How to fix?

Is your phone storage 4gb or 8gv? As written on the box
Sent from my GT-P3100

scorpionma said:
Is your phone storage 4gb or 8gv? As written on the box
Sent from my GT-P3100
Click to expand...
Click to collapse
The tablet is 8 gb and shows that in the Settings_Storage.
There must be a method or restoring the partitioning to stock, oob, sizes?

The data partition（store user-install apps and app's data） and internal SD partition(store User data like music,video,docs eg.) is ONE partition on Samsung GTab2 Tablets. So the "lost" 2G space which puzzled you are used to store the app and app's data.

king200 said:
P1113, JB 4.2.2 Stock Rom, CWM, rooted running and no obvious system problems.
My understanding is that there is supposed to be 4.5 gb or internal storage, or /storage/emulated/0. I have an actual 600mb of items on the internal storage space. I verified this by copying all the files/folders to pc and checking the size. Root Explorer reports same folder size for /data/media.
Settings->Storage indicates that I have 4.5 gb internal storage, 2.5 gb is free and there is 2 gb not accounted for. I should have 4 gb free? I reformatted /sdcard with CWM and still have only about 2.5 gb free and not 4.5.
2.5 gb of usable internal storage seems much to low. Flashing the rom with Odin did not change this problem. On a practical basis, I cannot install a GPS navigation app because it uses >2.5 gb.
What might the problem be? How to fix?
Click to expand...
Click to collapse
Go to the /mnt/shell/emulated to look, you should have the root accounts to get the things or copy it.I hope it is helpful

ytyyutianyun said:
Go to the /mnt/shell/emulated to look, you should have the root accounts to get the things or copy it.I hope it is helpful
Click to expand...
Click to collapse
With you and other's help here, I think I understand. The device is 8gb. 2 GB is for the operating system. Two GB is for apps and data. Then 4 gb remain for internal storage.
I would like to swap 4 gb storage with the 32 gb MicroSD card. I have been doing that prior to 4.2.2 running a script that changed mount points. That no longer works. I don't know how to edit fstab file that might work. In the meantime, I'll try to spend more time using the device instead of modifying it!

[Q] N7000 displaying full memory and wrong total internal memory

Hi folks at XDA!
My name is Erich And I have a N7000 (first gen Galaxy Note).
I have it rooted and although it is a 16GB device, it is showing just 10.9 GB of internal memory when I plug it to the PC via USB.
But this is not the major problem. The major problem is that it is displaying full memory (2GB total) even after a factory reset and installing a just the super optimizer app.
I´ve tried to use odin with the 16GB .PIT file but it didn´t helped.
I´ve tried to format it to ext 4 with Phil-z CWM and I can´t boot it past CWM anymore. Later today, I´ll try to install the original ROM file from sammobile.
Can someone please help me mainly with the memory problem?
Thanks!

Does anyone have any ideas please?

ebeall said:
Does anyone have any ideas please?
Click to expand...
Click to collapse
go into settings > storage > normally you will get Internal phone storage at about 2 GB and Internal SD card at about 13.43 GB ( when it is having a 16 GB embedded SD card)
your 16 GB embedded SD card has many hidden partitions, so usable storage space will be reduced.
what you can do is copy all the contnts of your SD card to your PC and than format it by settings > storage> format to get back full space.
to learn more about storage look at My Storage ( link below)
Check this out! Links to useful Guides and " Banned " Documentaries ​

Thanks man! This is what I get when I do as you told:
device memory
- total space: 1.97 GB
- apps: 402 MB
- Available space: 1.56 GB
USB Storage
- Total Space 11.08 GB
- Apps: 86.12 MB
- Images, videos: 1.53 MB
- Audio: 32 KB
- Other Files: 172 MB
- Available Space: 10.88 GB
Keep in mind that I did a factory reset this weekend and formated everything via PhilZ CWM.
The real problem with all this is that the avaiable ROM goes full with just few apps like Waze, WhatsApp, gApps and such. I used to install lots of apps with no problems, but now this space goes up real fast.
Anyway, I will play with it again after the format/ factory reset.
Thanks for the info. I´ll try to update the info as it goes.

And it happened again.
It was ok yesterday, with 1.5 GB free yesterday and today it is full. The last thing I've installed was any.do and any.do Cal. But those were about 5 days ago.
All the movable Apps are in the external SD
All pictures were deleted too.
All I've intalled is:
- Super optimizer;
- tinder
- swift key
- skype
- waze
- WhatsApp
Root apps:
- root checker
- Super User
- Super SU
- PhilZ CWM
So, again I ask again the good people at XDA:
Does anyone have any Idea of what's happening?
thanks in advance

I am still having this problem.
I can´t update any app because the ROM isn´t enough for the action. Can someone please help me?

What ROM are you using?, and also which recovery do you have?
Sent from my GT-N7000 using XDA Premium 4 mobile app

rebuilding partitions / cm10 / low memory

I am referencing this post to try and get more info from a broader audience if possible
http://forum.xda-developers.com/showthread.php?t=2544702
heres the issue:
I wiped fully my p3113 several times correctly... (data / system / cache / dalvik / etc etc)
installed latest cm10 nightly
i get only 4.59gb onboard ram (see the screenshot in the above link)
apparently the cat who wrote the threat above was able to rebuild the partition to solve this problem... my question is, how does one rebuild the partitions??? which ones need to be rebuilt? can i do it within cwm or do I have to do it within odin?
thanks!!!!!!!!!

First off, don't mix up RAM and internal storage, these are different things! What you are talking about is not RAM. Second, 4.5GB of user-accessible storage is all you get on this tab - it's normal, there is nothing wrong with that! The other thread you are linking to is about a different problem - if you read carefully, you'll see that the OP was only having 500MB available out of 4.5GB. That was the problem he fixed. You have nothing to fix, don't mess with your device.

kt-Froggy said:
First off, don't mix up RAM and internal storage, these are different things! What you are talking about is not RAM. Second, 4.5GB of user-accessible storage is all you get on this tab - it's normal, there is nothing wrong with that! The other thread you are linking to is about a different problem - if you read carefully, you'll see that the OP was only having 500MB available out of 4.5GB. That was the problem he fixed. You have nothing to fix, don't mess with your device.
Click to expand...
Click to collapse
thank you brother.... my question then is why when I have the stock rom installed does the memory show up as being 8gb internal and only 4.59 with cm10?
is cm10 actually taking up over 3gb of space? and if this is the case what is the best way to use the ext card as the memory to which I install my apps? there is nothing that I have seen that works with cm10 in the memory swap area.

nycdave said:
thank you brother.... my question then is why when I have the stock rom installed does the memory show up as being 8gb internal and only 4.59 with cm10?
is cm10 actually taking up over 3gb of space? and if this is the case what is the best way to use the ext card as the memory to which I install my apps? there is nothing that I have seen that works with cm10 in the memory swap area.
Click to expand...
Click to collapse
I don't know much about CM, but on every version and flavour of stock ROMs that I tried on my tab (and I tried quite a few), I always got around 4.5GB of storage available. Also, this is what I recall reading from the specs somewhere. Frankly, I can't understand just how you would get 8GB reported by the system to be accessible, whether on stock, or any other ROM... On all devices, accessible internal storage is always significantly less than the total - for example, on my phone the accessible storage is only 25GB out of a total of a 32GB.
A couple of screenshots to illustrate my point (stock-based 4.1.2).
BTW, I'd like to ask anyone to provide a screenshot from any ROM on this tablet, showing a larger amount of available storage. Really, I would very much like to see that.

kt-Froggy said:
I don't know much about CM, but on every version and flavour of stock ROMs that I tried on my tab (and I tried quite a few), I always got around 4.5GB of storage available. Also, this is what I recall reading from the specs somewhere. Frankly, I can't understand just how you would get 8GB reported by the system to be accessible, whether on stock, or any other ROM... On all devices, accessible internal storage is always significantly less than the total - for example, on my phone the accessible storage is only 25GB out of a total of a 32GB.
A couple of screenshots to illustrate my point (stock-based 4.1.2).
BTW, I'd like to ask anyone to provide a screenshot from any ROM on this tablet, showing a larger amount of available storage. Really, I would very much like to see that.
Click to expand...
Click to collapse
thank you so much for the feedback. what rom are you using and how do you not run out of space for apps? are you not using an apps to sd script or app then?

nycdave said:
thank you so much for the feedback. what rom are you using and how do you not run out of space for apps? are you not using an apps to sd script or app then?
Click to expand...
Click to collapse
No problem. The link to the ROM I am currently using is in my signature. How I don't run out of space -- I dunno... I just don't. I am not an app junkie, and I don't install or use any games, so everything works fine for me so far. I am also not using any scripts or apps to swap int/ext SD, or to install apps on ext SD card. The biggest space hogs for me are offline maps (I use Maps With Me and Nav Free) and multimedia (photos, music, videos), and I keep those on my ext SD card.

do you have the 8gb variant or 16gb? also when your running stock rom are you using 4.2.2 jb? if so then thats why it shows up as 8gb. with previous version of the stock firmware it used to show up as split partition 4gb for system and 4gb for internal until samsung offically released 4.2.2 for the GT-p3113

xbahamutzero said:
do you have the 8gb variant or 16gb? also when your running stock rom are you using 4.2.2 jb? if so then thats why it shows up as 8gb. with previous version of the stock firmware it used to show up as split partition 4gb for system and 4gb for internal until samsung offically released 4.2.2 for the GT-p3113
Click to expand...
Click to collapse
Damn Samsung bastads. This was driving me insane as I just flashed mine last night and thought at first I F'ed it up, then I was going to blame the OS CM-11 for not reporting the full space. sigh this one little sentence puts me at ease. For that, I thank you :good: :highfive:

Storage isues

Hello,
I have a GoClever Aries 785 (M7841) Tab, and supposedly it is an 8 GB tab, since I can ot post any images because I am a new user this will be harder, I will try to transcript from the screenshots I have taken, here we go:
1. You see this when you press the "Storage" tab in settings:
Storage
Rom information
Internal Rom 8192 MB
System 7528 MB
User Available 664 MB
Okay so, What does all this mean? Am I missing something obvious here? Internal Rom as I understand is the total memory the device has? And System is how much is currently being used as a total? User available is self explanatory. I am not new to flashing Android Roms and such, but this is confusing me for some reason. Moving on to the next image and closer to the main question
2 In the same "Storage" tab I see a section called:
Flash storage
Total space: 5.06 GB
Available: 664 MB
(And on it goes with how much storage the apps, pics and so on occupy)
As I understand, this Flash Storage is an emulated internal SD card or something
3. Another section is:
Internal storage
Total space: 0.98GB
Available: 287MB
Apps (SYSTEM APPS IN FACT) and cached data takes about 500MB
So that adds up to what? 6 GBs? As I understand 3 GB is hidden and used by the Android system?
The point of all this is this leaves me with like a half a GB to download apps and install them because they all go to internal storage and not flash storage or SD card. WTF? I am constantly having issues of low storage and when I reach a certain limit Google Play does not even let download apps. I can have the Flash storage as empty as I want and an SD card as large as I want but because the internal storage has only 300 MB available I am not able to download apps. I can download apps if there is free internal storage and move them to flash storage from the app manager, but the system still leaves some data in the Internal storage and I do not think I can move them to an SD card, so since when I move an app to the Flash storage and it leaves some data in Internal, I come to a point when it is full again and there is nothing I can do about it. I cant select the default write disk to be Flash stage or SD, but I think it is only for the camera, voice recorder and etc. How do I work around this? Is there a way to reparation the storage so there would be more space of Internal storage? Or maybe some thing else I could do? I can not even have apps like Facebook or the Google Docs that I need, I have to constancy clean cache so I cant at least get like 20 MB more.
Device is rooted, I can access device internal storage with ES file explorer.
If you have gotten this far, I thank you for reading my novel, I have tried to explain everything as clear as I can and to include as much info as I can, some of it might have been useless. Sorry for a long post.

No one has the answer?

Hi !
If the device has been rooted then some improper storage readings may occur
Install DiskInfo from playstore for a better image of your storage
You can use but be careful with SdMaid from playstore as well
Basically , a 8GB Rom is the total storage your device has been built with which actually means 7629.39 mb in real
From this amount , 3 gb may be the system which you can`t fill it up with user`s apps or personal files , the rest of it is the user`s space storage from which 500 mb is the cache
In the end , without any personal files or user`s apps , the amount of available storage may be 4291.53 mb so , try to remove all the personal (media) files away (audio , video, downloads ...) and check how much free space you`ll get
Your system may be capable of moving user`s app to flash storage but this is limited to certain folders like data folder of the application , the obb won`t move out
A good application is Apps2Sd from playstore but again , be very careful and properly read the xda`s thread before doing anything
Good luck !