I have WiFi router set up. Both my phone and Windows PC connects to the same WiFi. So I tried ES File Explorer to copy shared folders from my Windows PC to my mobile. However transfer speed goes as high as 570 KB/s but not more than that. Since I configured my WiFi router to allow speed as high as 300 Mbps I am guessing why it cant hit the Mbps speeds. What can I do improve on my speed since I move movies worth in GBs and it takes almost an hour or more. Is it limited by the speed of the mobile and its internals?

  • Have you checked the connection speed of both in your router? Maybe one of the two is not connected at "full speed". Also consider that CIFS overhead eats some of the theoretical possible throughput.
    – Izzy
    Commented May 15, 2013 at 19:47
  • what about FTP or HTTP transfers?
    – golimar
    Commented Aug 23, 2013 at 10:35

2 Answers 2


Your phone seems to be a bit older as it runs Android 2.3 - therefore I assume it does not support any faster WLAN connection than 54MBit.

Hence the theoretical maximum would be 54MBit = 6.75 MByte/sec but only if you have just a router and a phone. With your PC in the network each device gets less than that.

Depending on the network protocol used you also lose a lot of speed. SMB/CIFS as used by Windows shares is very ineffective. Better use FTP protocol and suitable client for the best speed.

If that does not improve the performance I would suggest using an sd-card in and sd-card reader directly attached via USB 2.0 to your PC.

  • Well about the phone, its not from a big vendor but quite a local one. Its Karboon A5+. It has 1GHz processor and somewhat ~430MB RAM. I did bought it 5 months ago and it was new model then though cheaper one. About using SD card reader, am afraid it will damage my expensive microSD, I bought class 10, 32 GB SanDisk. Exactly which parameters I can look for to determine max Wifi transfer speed supported by my phone.
    – Mahesha999
    Commented May 16, 2013 at 19:40
  • 1
    Sorry but you are totally wrong. A SD-card reader does not damage anything as long as you handle the SD-card carefully.
    – Robert
    Commented May 17, 2013 at 7:30

I have the same issue on Google Nexus 10. And I've recently find out that this happens only in ES File Explorer. I've downloaded movie using Google Chrome and the speed was 7 000 kbps, but the same file from the same site through ES Exp - < 500 kbps...

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