1. Win Luck's Avatar
    I purchased this Samsung Micro-SDXC card (90MB read / up to 80MB write) for my 1520

    Amazon.com: Samsung Electronics 64GB PRO Micro SDXC with Adapter Upto 90MB/s Class 10 Memory Card (MB-MG64DA/AM): Computers & Accessories

    But, I noticed that file transfer from either PC to Phone or Phone to PC is very slow which took more than half hour to transfer 4 gigabyte pictures and videos. However, when I record the video with 1080P/30F, I didn't see any lag. I had another Windows phone 7.8 device before and that only took few minutes to transfer 4GB data.

    How is your transfer speed?
    07-10-2014 01:28 AM
  2. Veett's Avatar
    Well from my experiences that card is too good for WP system since it doesnt benefit from its speed in any way. And if you are using usb cable to transfer files it will bottleneck your transfer rates a lot. So in order to get top speeds from that card you need to get it out from the phone and stick it in to USB 3.0 card reader.

    edit: And if your 4GB transfer is taking that long there is prolly something else going on at the same time -> reconnect phone and/or reboot phone and/or computer :).
    Last edited by Veett; 07-10-2014 at 03:40 AM.
    Win Luck likes this.
    07-10-2014 03:27 AM
  3. Win Luck's Avatar
    Yes, I know this card is too good for the phone, but after read so many ppl had lag issue in Full HD recording then I rather buy something overkilling to prevent future headache. However I didn't expect 1520's transferring speed is this slow between PC and phone when compare it with my other phones, even the very old N95 is doing better than this 1520.
    07-10-2014 03:14 PM
  4. Veett's Avatar
    Is it always that slow? I get sometimes really low transfer rates but switching to another usb port has usually helped.
    07-10-2014 03:50 PM
  5. Win Luck's Avatar
    Thanks. I tried with 2 computers and 1 notebook with different cables. However, how is your 1520? Do you see any speed different compare with your USB 2.0 flash drive?
    07-11-2014 12:01 PM
  6. len0808's Avatar
    as a test, i transferred a 973mb file (asphalt 8 xap) from my pc to 1520 sd card. i used the usb 2.0 port on the back of my pc. it took exactly 1 minute to transfer the file. i have the sandisk extreme plus 32 gb which is slower spec-wise than your sd card.
    Win Luck likes this.
    07-11-2014 01:29 PM
  7. Veett's Avatar
    I did also quick test with 1505mb file. Transferred file from pc to phone memory&memory card and from phone memory&memory card back to pc. All came quite close to each another around 1m38s. I have currently samsung EVO 64gb memory card in phone.
    Win Luck likes this.
    07-11-2014 02:29 PM
  8. Win Luck's Avatar
    Thank you very much, I really appreciate!
    07-14-2014 01:04 PM

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