THL W100 Where did my internal storage gone? - Android Q&A, Help & Troubleshooting

hi
i have an un rooted THL W100 since 2 months.
it works great except i has only about 50 mega left in the internal storage.
Now, it suppose. to have 4 GB ROM.
what i actually have according to android system, (and other apps) is 2 GB of ''phone storage'' (internal sd for data), and 0.9 GB of ''phone storage'' for the system.
(i also have an 16GB micro SD card, which is only 50% full, and that is also my ''default'' for data writing).
Now, out of my 0.9 GB, only 450 MB is used, but i have a ''low storage''massage ,and all the storage apps indicate that i have only 50 MB left.x
So where did the other 500 MB out of the 0.9, gone?
(and where is the missing 1Gb from the 4GB ROM, for that matter).?
i shifted all the shiftable Apps to the SD Card.
and i have only very small size apps in the ''phone only'' section.
i also cleaned all the cash and data, that i could.
i try to attach some screen shots.
also, the phone crashes some times, i think because it is almost full (it crashes very little when i try to un install some apps to free memory).
pls. help

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W100 owner ?
hi
2 days without comment.
if you are a w100 owner, can you pls.
post here how much storage (both for data, and system), you have total (according to ''setting''- ''storage'' - like my 'black' pic attached ) , how much you have used, and how much you have left.
this way i will be able to locate my problem.
thanks a lot.

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hove64 said:
hi
2 days without comment.
if you are a w100 owner, can you pls.
post here how much storage (both for data, and system), you have total (according to ''setting''- ''storage'' - like my 'black' pic attached ) , how much you have used, and how much you have left.
this way i will be able to locate my problem.
thanks a lot.
Click to expand...
Click to collapse
try cleaning cache and dalvik cache
and double check is there any file on internel use any explorer apps

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thanks a lot friend sangalaxy
The cash is cleared many times.
I am a beginner so i read just now about dalvik chache.
If i understand Correctly, since my phone is unrooted, i can clean it only from recovery, which in my case is still not usable because its in chinese.
I will install CWM soon, and then...
About your last remark, about files being Used, i am sorry, i don't understand, but my low mem. Condition is since 2 weeks, so mabe that answere it ?
I will try to post 2 new pics of info.
I see in them that i do have almost 0.5 '' internal ''data'' folder , and almost 0.5 of ''system'' folder , full.
If the system, and data, are 2 different folders, then i do have my 0.9 of internal storage.
Is it so?
Then there is no ''missing'' storage space.
Just 2 full half gig spaces.
Is it so?
Then i just need yo find how to clear some
Thanks again.

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My phone is 8G ROM, but can use only 3.2G, what procedures are occupied so much memory?

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the 500mb is mysteriously missing
i have compared my pics to my other phone, and it seems like the black pic of my internal storage is telling the story.
if you add the green (apps), and the cache, and the grey (''available space''), you should get the total which is 0.9 gb.
and i am getting only about 500 mb.
i have now only about 70mb. left available , instead of 570mb.
So 500mb IS missing !
WHERE ??

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End of the story factory rest
Hi
After I could not find a solution, I did a factory data rest, and that seem to solve my problem.
I reinstall all my apps and now I have 500mb. Space available, instead of only 50mb.
I don't know what was the problem, but its gone for now.
Thanks.