Database Users

Slow WIFI Transfer

Hi,
I would like to ask if it's normal to have <1MBps wifi transfer rate on my Galaxy S4. I'm trying to transfer a movie file from my phone to my PC (gigabit-lan) via my TP-LINK N750 router.
I checked my phone and it's currently connected using 2.4Ghz spec with 72Mbps linkspeed. Theoretically.. the wifi transfer speed should be around 8MBps not <1MBps.
Any clues why my transfer speed is slow? My forte is more on network stuffs so I'm not really sure if my phone is causing the bottleneck here or not. See attached for reference.
Thanks guys!
Sent from my GT-I9505 using XDA Premium 4 mobile app

I have the same issue across several different ROMs and modems. Laptop with external HD is connected to router with gigabit LAN, phone connected to router via wireless-N and I get roughly 1mbyte/s. However download speeds with my phone via WiFi is roughly 8 megabyte/s (fiber optic) so I know higher speeds are possible.
My other desktop PC achieves around 11-12megabytes through WiFi but my phone just gets nowhere near it.
Odd thing is when I stream videos to my phone though my WiFi from a hard drive the phone buffers at well over 5megabytes/s but file transfers are somehow limited... I could never figure this one out

Swizzy88 said:
I have the same issue across several different ROMs and modems. Laptop with external HD is connected to router with gigabit LAN, phone connected to router via wireless-N and I get roughly 1mbyte/s. However download speeds with my phone via WiFi is roughly 8 megabyte/s (fiber optic) so I know higher speeds are possible.
My other desktop PC achieves around 11-12megabytes through WiFi but my phone just gets nowhere near it.
Odd thing is when I stream videos to my phone though my WiFi from a hard drive the phone buffers at well over 5megabytes/s but file transfers are somehow limited... I could never figure this one out
Click to expand...
Click to collapse
Thanks Swizzy!
I also noticed this.. somehow I thought it was because of my router. So I decided to buy 450Mbps Dual Band router to test it. Unfortunately, it is still capped @ ~1MBps transfer rate even I used the 5Ghz spectrum

Complain to google
I have done some testing with a fast windows 7 system as the target and a Nexus 5 and an xperia neo v. I have also tested with XP and Linux smb clients. Basically the maximum I get get with stock 4.4.2 or 4.0.4 is about 4.5 Mbps (550KBps) pull down and 9Mbps push up. Wifi is 11g and XP gets 15 down and 19 up. openSUSE linux gets more or less the same as XP. The problem exists with ES Explorer and File Manager. I tried SFTP into linux with ES Explorer and that was a little slower. The standard USB transfer from windows explorer is really fast to the N5. This looks like a design or configuration problem in android 4. Complain to GOOGLE.
I am glad I found this just before I spent a lot of money on an ac router to speed up large wifi file transfers

So a device running pre version 4 should not have the limitation?

I have a Galaxy S4 with the newest firmware from samsung I9505XXUGNF1 (Kitkat 4.4.2). My router is a Asus RT-AC66U to which My S4 connects to with max speed of 433 Mbps. My internet connection is 120 Mbps.
When I do a speedtest on the S4 I get results of over 110 Mbps, but when I'm downloading a file over LAN from the disk connected directly to the router I get download speed only of ~20Mbps (2.4 MB/s) which is very sucky!
My Laptop have only a N network card, and connects to the router with max 300 Mbps and when I download the same file I get over 7.5 MB/s!! (~65 Mbps).
Speedtest also shows results of over 110 Mbps...
I remember when the phone was new, and it had Android 4.3, I had LAN download speed of over 9-10 MB/s...
I tried with different file managers like X-Plore and others, but it looks like it is not the app problem. Maby is a KitKat problem??

In short blame Broadcom or Samsung for using Broadcom BCM4335's BCM4335 wifi chipset. You need to understand how 802.11n works. To achieve 300mbps speed, you will need 2-3 spatial antennas which can be found on modern laptops with Intel Wifi chipset (such as 6300). Our galaxy note has only one antenna (should be 1 for each radio band (a/n, b/g/n), but it is "N" compatible. Unfortunately this is a case of the manufacturer misleading it's customers ( I would say out right lying to us). Its is compatible with N, however it can not support N speeds, as far as I have seen all phones that claim 802.11n are actually limited to 65mbps. So really are not 802.11n at all, rather just a little faster than 802.11g.
part of the problem is the maximum number of data spatial streams the radio can use. Also assuming equal operating parameters to an 802.11g network achieving 54 megabits per second (on a single 20 MHz channel with one antenna), an 802.11n network can achieve 72 megabits per second (on a single 20 MHz channel with one antenna and 400 ns guard interval); 802.11n's speed may go up to 150 megabits per second if there aren't other Bluetooth, microwave or WiFi emissions in the neighborhood by using two 20 MHz channels in 40 MHz mode. If more antennas are used, then 802.11n can go up to 288 megabits per second in 20 MHz mode with four antennas, or 600 megabits per second in 40 MHz mode with four antennas and 400 ns guard interval. Because the 2.4 GHz band is seriously congested in most urban areas, 802.11n networks usually have more success in increasing data rate by utilizing more antennas in 20 MHz mode rather than by operating in the 40 MHz mode, as the 40 MHz mode requires a relatively free radio spectrum which is only available in rural areas away from cities. Thus, network engineers installing an 802.11n network should strive to select routers and wireless clients with the most antennas possible (one, two, three or four as specified by the 802.11n standard) and try to make sure that the network's bandwidth will be satisfactory even on the 20 MHz mode.
Data rates up to 600 Mbit/s are achieved only with the maximum of four spatial streams using one 40 MHz-wide channel. Various modulation schemes and coding rates are defined by the standard and are represented by a Modulation and Coding Scheme (MCS) index value. The table below shows the relationships between the variables that allow for the maximum data rate. GI (Guard Interval) : Timing between symbols.[6]
Refrence: http://blogs.intel.com/technology/2010/02/the_black_and_white_worlds/
reference: http://en.wikipedia.org/wiki/IEEE_802.11n-2009#Data_rates

I see similar speeds on my S4 when doing wifi transwer. varies depending on which network i am on and what I am transferring to.
still faster than crappy USB connection..

@XeoNoX thank you for educational lesson.

WiFi Powersave mode
You may check if the WiFi power save mode is on. If it is on, you may turn it off and check if the speed improves.
To enter Service Menu, open dialer and press *#0011#
In the service menu, select menu > wifi
check if the WiFi power save mode is on or off. Turn it off.
If it was off, then you've wasted your time trying this

Weak WIFI speeds ~ 10-20 Mbit - Suggestions?

Hey!
Has anyone else had problems with their wifi connection?
My D802 rarely goes over 1,5 MB/s on SMB and rarely over 2,5 MB/s on FTP.
(ES file explorer, tried both 2.4 / 5 GHz, tried three routers atheros/broadcom AC + Linksys G latest firmwares)
Same wifi setup results in transfer speeds of 15-25 MB/s on two laptops with the current Netgear R7000 ac-router I'm on now.
Link speed in the G2 is shown as 433 Mbps. Running latest CM11 nightly 0224 rom but tried the original LG 4.2.2 with same result.
Is there a modem update or better app that can improve the transfer speeds? How about the official 4.4.2 update, does it come with any speed improvements?
I appreciate any suggestions you may have. /s

Just wanted to inform any reader that the problem was with the smb samba file explorer app. Nowadays ES gives around 5MB/s but the real speed champion is ...... Drumroll..... X-plore!
Winner by a landslide. Newcomer app that offers stable samba file transfers at over 9 MB/s. What a geek rush!
/s

WiFi Low transfer speed over LAN

My Galaxy S4 have the newest firmware from Samsung I9505XXUGNF1 (Kitkat 4.4.2). My router is a Asus RT-AC66U to which the S4 connects with max speed of 433 Mbps. My internet connection is 120 Mbps.
When I do a speedtest on the S4 I get results of ~110 Mbps, but when I'm downloading a file over LAN from the disk connected directly to the router I get download speed only of ~20Mbps (2.4 MB/s) which is very sucky!
My Laptop have only a N network card, and connects to the router with max 300 Mbps and when I download the same file I get over 7.5 MB/s!! (~65 Mbps).
Speedtest also shows results of over 110 Mbps...
I remember when the phone was new, and it had Android 4.3 (~10 months ago), I had LAN download speeds of over 9-10 MB/s...
I tried with different file managers like X-Plore and others, but it looks like it is not the app problem.
does somebody know what could be the problem?

Same problem on Galaxy Tab S (SM-T805)
The same is happening to my Brand new Galaxy Tab S.
It is connecting to the WiFi with 866Mbps, and files inside the network are download only at ~3 MB/s
does anybody have the same issue?

The problem is now solved by installing newest version of X-Plore v 3.66 https://play.google.com/store/apps/details?id=com.lonelycatgames.Xplore
LAN download speeds went from ~2.5 MB/S to ~14 MB/s (I think that the limit is now the Hard Drive plugged to a USB 2.0 port on the router)
Thank you Lonely Cat Games for solving this issue!!

E5 wifi 72mbps max

Samsung E5 connecting to my tp link 841n router at link seed of 72mbps only.
router can support upto 300mbps...
my old micromax a110 can connect at 135mbps.
is Samsung limited to 72 mbps ????
i set my wifi to 40 mhz, channel 6 and N-only mode. wpa2 aes..

Same here
Well normal download speed is same as before !
But Play store download speed had reduced 10 time.
Earlier i used to download from play store at 5 MB/s but now at 500 KB/s.
Even after coming back to stock ROM i am not able to get that high speed.

I got the same problem. My E5 it's E500M

Question Nothing phone 1 wifi issue and power saving mode ON by default.

Hi, i have the phone 1 when ever I use a wifi 4 router internet internet speed is significantly low like 800 kbps to 2 Mbps on a 100 MBPS internet.
When I checked with router it says wifi power saving mode is on by phone.
Anyone know how to access engineering mode?
Can i disable wifi power saving some how?

Even I am facing the same issue. my one plus shows 65 to 85 Mbps but nothing phone shows less than 1 Mbps

ags34 said:
Hi, i have the phone 1 when ever I use a wifi 4 router internet internet speed is significantly low like 800 kbps to 2 Mbps on a 100 MBPS internet.
When I checked with router it says wifi power saving mode is on by phone.
Anyone know how to access engineering mode?
Can i disable wifi power saving some how?
Click to expand...
Click to collapse
Have you found any solution? or work around?

Dark$ider said:
Have you found any solution? or work around?
Click to expand...
Click to collapse
Changed wifi to 802.11 n mode only and using 40 MHz band right now speed improved to 25-30 Mbps but never found a solution to this my OnePlus 7 next to me constantly hit 85-90 mpbs from same place and connected to same WiFi.
And i don't know what is causing this issue yet.
I seen only with wifi 5 GHz the phone wifi is working fine but if you connect to 2.4ghz speed is very bad.

ags34 said:
Changed wifi to 802.11 n mode only and using 40 MHz band right now speed improved to 25-30 Mbps but never found a solution to this my OnePlus 7 next to me constantly hit 85-90 mpbs from same place and connected to same WiFi.
And i don't know what is causing this issue yet.
I seen only with wifi 5 GHz the phone wifi is working fine but if you connect to 2.4ghz speed is very bad.
Click to expand...
Click to collapse
I tried changing the router channel and set it to 11 I started to get 85-100 Mbps on fast.com but again it stops after 2-3 min ad the same issue

Dark$ider said:
I tried changing the router channel and set it to 11 I started to get 85-100 Mbps on fast.com but again it stops after 2-3 min ad the same issue
Click to expand...
Click to collapse
Same it work for 1 to 2 times in speedtest results shows high speeds but drops to 1-3mbps instantly.
Currently I'm getting 30 Mbps by following above method can you try once and see if 802.11 n only not working try 802.11 G + N it is also working fine for me.

ags34 said:
Same it work for 1 to 2 times in speedtest results shows high speeds but drops to 1-3mbps instantly.
Currently I'm getting 30 Mbps by following above method can you try once and see if 802.11 n only not working try 802.11 G + N it is also working fine for me.
Click to expand...
Click to collapse
Yeah i am using 2.4(B+G+N) one tweak i did now is set channel width to 20MHz or 40MHz instead of 20/40 and now back to 70 to 90 Mbps now its not dropping ensured by disconnecting also restarting device

ags34 said:
Hi, i have the phone 1 when ever I use a wifi 4 router internet internet speed is significantly low like 800 kbps to 2 Mbps on a 100 MBPS internet.
When I checked with router it says wifi power saving mode is on by phone.
Anyone know how to access engineering mode?
Can i disable wifi power saving some how?
Click to expand...
Click to collapse
I am facing the similar issue.how did u solve ur problem?

I use a wifi6 router so my phone has almost 700 MBps download in same room with the router and between walls I have almost 600 MBps . ISP provider is set on 1GB . Those results are by default settings on my phone .
There is under developper options one particular setting about internet connection reffering to " limit network bandwith download " which is applied to all networks that phone is connecting to . There are some limits like = No limits , 128 kbps , 256 kbps , 1Mbps , 5 MBps and 15 MBps . Choose NO Limits .
Mine No limits is by default .
It is known that bandwith on 2,4 GB band is much lower than 5GB . Also router must know and deal with MiMo wich Nothing Phone is capable . Even more there are plenty of WiFi analyzer apks that help you to choose the best channels and/or band on both 2,4 GB and 5 GB band of router . I must say between 3 new phones I use now , Nothing Phone has the best modem radio chip .
I guess you all faced to some router problems . Phone is fine , except that limit set under developper settings which like I said is set to NO Limits but check it out