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admad

Can you implement USB Mass Storage mode or point me to a way on how to transfer files to PC with a speed that is worthy of 21st century?

On Z3 I had an USB mass storage option for file transfer between PC and SD card. Now it's gone, the only option for file transfer is an ultra bad MTP (Media Transfer Protocol) which is very slow! What's the point of having USB 3.0, ultra fast SD cards when a file transferring method is limiting all that to ancient times? I intentionally bought high speed SD card for my new phone (128GB, read 100MB/s write 90MB/s) but I'm limited to 6MB/s due to slow transfer protocol? Are you kidding me?! LTE speeds are higher than cable transfer, oh the irony is killing me...

I made a test, copying a 1732 MB file to a phone external SD card. Here are the results:
Sony Xperia XZ Premium (SD card: Samsung 128GB micro SD SDXC Class 10 EVO+ UHS-I U3 100MB/s Edition, write speed 90MB/s)
Transfer time: 4m53s (293s) which gives an average transfer speed of 5,9MB/s.

Sony Xperia Z3 (SD card: ADATA 32GB HC class 10, read speed 50MB/s, write speed 10MB/s)
Transfer time: 2m9s (129s) which gives an average transfer speed of 13,4MB/s.

Z3 clearly wins with much slower card... I didn't use my new card there because that would totally smash XZ Premium. Before I got my new phone I did however test Samsung card in my Z3, the writing speed was 30MB/s and it was limited by USB 2.0 on Z3. I was eager to see USB 3.1 on XZ Premium in action, but the result as you can see is tragic...

So please, tell me, how can I transfer files between my PC and SD card with a speed that is utilizing USB 3.x standard and high speed characteristics of SD card?

If MTP is the only way, why not implement USB Mass Storage mode, so that the device would really be Premium? Is 6MB/s all that this phone can do?

Thelastofus

I faced similar issue several times in sony ,samsung ... Phones ! sometimes some of my files is not visible when i connect my phone to the pc . Clear cache &data my file manager fixed the issue ! Every time i face this issue i try this :

1) clear cache& clear data my file manager from settings==>apps

2)restart my phone

3) connect my phone to the pc

If you face issue like this for example "insufficent space " clear cache&data your file manager probably will fix the issue ...

admad

I tried clearing cache and data but it didn't help. Those files are simply missing, my guess is the phone is "recording" any activity on SD card, so that when I copied the files on different device they are invisible to this transfer protocol, well looks like I just have to accept this is crap and move on...

Thelastofus

Did you rebooted the phone ? If yes and it didn't work try this :

Go to settings ==>Apps and tap 3 dot above the screen then choose "show system "

Look and find two system App "External storage" and " media storage" then ==>clear cache & clear data both after that reboot your phone and connect it to the PC

admad

Well, I did that and it had an effect, but that's not what I was expecting... Now all my files on SD are invisible through MTP, only new files are shown (for example a photo I took after this operation is visible).

MTP is officially ULTRA CRAP. Look at that, it knows that there is 35GB of data, but refuses to show them. I need to cool off because I'm super pissed.

Preacher_U

Agree, MTP is utra-crap and totally not working!

I hated hi from first try with my first Andoid phone.

I use USB conection to transfer photos and it takes minutes to load the image folder on SD-card, no matter which cable and USB connector on Notebook i use.

And then is takres ages to transfer, crashed Explorer, ....

Please bring back mass storage mode