Slow SMB LAN Transfers S7 G930F - Samsung Galaxy S7 Questions and Answers

Hi!
I recently bought a S7 after the Note7 situation. During my time with the Note7 I noticed very slow network transfer speeds when using SMB. 600kb/s. With Http to the same lan device I get upwards of 6MB/s. The S7 I have now does the same thing.
I tested using TEL CSC 6.1 and the new 7.0 beta.
The original Note7 discussion is here. http://forum.xda-developers.com/note-7/help/slow-wifi-lan-transfers-t3452766
Any ideas?

Presjar said:
Hi!
I recently bought a S7 after the Note7 situation. During my time with the Note7 I noticed very slow network transfer speeds when using SMB. 600kb/s. With Http to the same lan device I get upwards of 6MB/s. The S7 I have now does the same thing.
I tested using TEL CSC 6.1 and the new 7.0 beta.
The original Note7 discussion is here. http://forum.xda-developers.com/note-7/help/slow-wifi-lan-transfers-t3452766
Any ideas?
Click to expand...
Click to collapse
I confirm same issue here on French Galaxy S7 (Exynos chip). LAN SMB is slow, but anything else is OK. I had to switch to PnP to watch HD movies, SMB access to my Windows server beeing too slow (less than 300 KB/s most of the time). I can sustain 8/9 MB/s transfer speed on QHD videos with Netflix, Youtube and PnP media server. I tried various explorers and media players, and it's always the same, so this doesn't seem related to a particular app.

It's a very weird issue. My old Galaxy S4 (Lollipop) had the same slow LAN/SMB transfer speed (over wifi) as my current Galaxy S7 (Marshmallow) (tops out at 2MB/s at most using ES Explorer) but my Nexus 7 (Lollipop, rooted) does a good 5 or 6MB/s (with all other conditions the same as the phones).
This is over 5Ghz wifi with the devices sitting within a foot of the Asus RT-AC68U router, downloading 2 or 3GB file from a WD MyCloud device connected to the router via network cable, sitting 2 ft away from router.
Have yet to find any solutions other than setting up http or ftp services, which defeats the purpose of a NAS.

bo8 said:
It's a very weird issue. My old Galaxy S4 (Lollipop) had the same slow LAN/SMB transfer speed (over wifi) as my current Galaxy S7 (Marshmallow) (tops out at 2MB/s at most using ES Explorer) but my Nexus 7 (Lollipop, rooted) does a good 5 or 6MB/s (with all other conditions the same as the phones).
This is over 5Ghz wifi with the devices sitting within a foot of the Asus RT-AC68U router, downloading 2 or 3GB file from a WD MyCloud device connected to the router via network cable, sitting 2 ft away from router.
Have yet to find any solutions other than setting up http or ftp services, which defeats the purpose of a NAS.
Click to expand...
Click to collapse
I was convinced it was a software issue because my Galaxy S5 running Resurection Remix (Nougat based) is able to transfer files with X-plorer using SMB at 8/9 MB/s, when my S7, nougat updated, peaks at 3 MB/s in the exact same conditions. So I decided to flash the latest Resurection Remix on my S7 (voiding the warranty) to test and guest what ? RR performed even worse than Samsung's OS ! So I don't really know what's going on here. Maybe this is a broadband issue ? Mayby Exynos S7 have a weird Wi-Fi chip that doesn't like SMB ? Who knows ? I gave up and installed SimpleDLNA on my Windows server. I'm now able to watch HD movies without problem.

Same here in S7 (non-Edge) Exynos model.
Usually, the upload speed start at 5MB/s, after 1-2 mins, the speed start slowing down and finally drop to 15KB/s
* (B = byte)
The only temp solution is enter the Wifi Setting page, tap on the SSID currently connected, tap advance setting, the back back back to home (do not change any setting or reconnect). THe transfer speed may boost back to 15MB/s shortly 1-2 mins again.
Waiting for samsung's fix as well. Same problem in G930FXXU1DQEJ and G930FXXU1DQJ1 (I have two S7 with same problem in my home.)
No such slowing down problem is found in my old Galaxy Nexus, Nexus 4, Nexus 5, Galaxy S3.
S7 is really well fitted phone for me just except this SMB problem.

Any update on this issue? Is it being solved in Android O (8.0)?
S8's AQJ5 firmware seems already fixed the same problem.

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