Database Develop

[Q] Bell?/Sasktel MobileAP Data Drops

Hi All,
I've had my SGS since September of 2010. When tethering using mobile AP I get frequent "disconnects" on any PC/Laptop I use where for a time I'm unable to do anything over HTTP or HTTPS, but other protocols seem fine. The real kicker is that the connection doesn't actually drop.
Let's say I have two PCs connected one is just a regular wifi tether surfing the net, checking email, etc. The other PC has a VPN tunnel which handles all internet traffic through it. The non-VPN PC will start having problems with websites ("Page cannot be displayed", "Connection refused", etc.) while the other (through the VPN tunnel) can keep going 100%.
I can be surfing along, lose connection, start up my VPN tunnel back to my office (even when I have no "web" access), and then everything will work 100% for hours on end. I've kept this VPN tunnel connected for the whole trip from Swift Current to Saskatoon and never had a drop except in one or two low spots. However, without the VPN tunnel I would have web issues every 15 - 20 minutes and they last for 30 seconds to 1 minute.
I called Sasktel twice on this now and the first time they admitted to having problems with some websites (mls.ca, flikr.com) where portions of the pages don't load correctly. The second time I called in and they denied having (or ever having) any issues.
Anyone else having similar issues? I think Sasktel (not sure about Bell) is playing with HTTP and HTTPS traffic. Whatever they're doing it getting in the way of normal communications..
Thanks!!
Riley

[Q] Slow Internet Speed on Wifi Nokia Lumia 1520

I am facing a slow speed using wifi on the lumia 1520. For sure there is something wrong with the wireless card or the drivers.
1. The internet speed while connected to wireless that i get on the 1520 is half or even more less than what i get on my desktop (connected wirelessly) or on my other phones (both being android). I get a 25Mbps download & upload both on the computer as well as on both the android phones. But on the Lumia it will hardly even cross 10Mbps for download and 16 Mbps for upload.
The issue with the speed is really strange because if i connect the phone to a 2.4 Ghz network i get upto 10 Mbps download and 16 Mbps upload speed.But if i connect the phone to a 5 Ghz N network then the download speed i get is 0.67 Mbps and upload 14 Mbps. Whereas both my androids have a download and upload speed of 25 Mbps no matter whether connected to a 2.4 Ghz or 5 Ghz network.
I have changed different channels on the router and have almost everything including resetting the router as well as resetting the phone but no luck. The phone is OOB lumia black OS.
Any ideas anyone.

What router do you have? My internet speed is 55mb down and 6mb up. I get 56 to 58 down and 6 to 7 up on my phone. I have an Asus AC1900 router. This phone has been one of the better phones I have owned when it comes to WiFi speed.
Sent from my RM-940_nam_att_200 using Tapatalk

TechSilver13 said:
What router do you have? My internet speed is 55mb down and 6mb up. I get 56 to 58 down and 6 to 7 up on my phone. I have an Asus AC1900 router. This phone has been one of the better phones I have owned when it comes to WiFi speed.
Sent from my RM-940_nam_att_200 using Tapatalk
Click to expand...
Click to collapse
I have a netgear wndr 3700v2 router . I was able to resolve the 0.67 Mbps speed issue on the 5Ghz N channel by enabling WMM on the 5 GHZ channel however still the speeds are half of what is the internet connection speed.
The surprising part is that after enabling WMM the speeds on the note 2 when connected to the 5 Ghz N channel reach the proper internet speed as on a wired ie:- 39 Mbps but on 1520 they hardly cross 15 Mbps download .On the note 2 or my other android as well as my desktop the download and upload speed is proper on both the channels 2.4 as well as 5 Ghz. This indicates tht the router is fine.
I think i have to contact nokia support to have this checked. I am not sure as to what else to apart from this.

Same issue on a N97, wifi is muuuuuuuuuuuuch slower than 3G. Some messages I got about certificates let me suspect the preinstalled Boingo appli. All worked fine on my previous 5730.

G900-F real life WiFi 802.11ac performance benchmarks

Hi all
I couldn’t find detail benchmarks of S5 implementation of Broadcom BCM4354 2x2 MIMO 5G WiFi 802.11ac module and in the end decided to take u plunge and purchased Asus ac68u router. Went thru setting up 5G ac wireless network and current results look like this:
S5 connects to 5G ac network with link speed of 866Mbps
File copy from:
Gigabit LAN wired PC to Routers attached USB 2.0 HDD 29MBps (240Mbps) - bottleneck usb 2.0 interface
5G ac WiFI S5 internal storage to Routers attached USB 2.0 HDD 11 MBps (90Mbps)
5G ac WiFI S5 sandisk 128GB microSD card to Routers attached USB 2.0 HDD 11 MBps (90 Mbps)
I have 100/100Mbps broadband internet connection and S5 on speed test performs as follows:
72Mbps DL / 75Mbps UL (same connection via wired PC benchmarks at 94Mbps DL / 95Mbps UL)
I haven’t managed to achieve transfers speeds above 100Mbps from or to S5 in any combination. Can you please share your experience of S5 wifi ac 5G network performance
Related : thread by xenokc about S5 performance on 802.11ac network
Thanks
Kreso

can you test with no encryption? wep/wpa completely off.

Isriam said:
can you test with no encryption? wep/wpa completely off.
Click to expand...
Click to collapse
Yes, i have tried that, but there was no change. Router firmware is upgraded to the latest version / wireless test were done in close proximity (1 meter) to the router without any physical obstacles between (clear line of sight)
I'm really on a mission to achieve transfers speed in a range of 350Mbps-400Mbs on local LAN (which should be doable) but i cannot get pas 100Mbps!!

i'll try to test as i know AC should be able to do it.

..

fffft said:
802.11 ac provides a theoretical maximum stream speed of 433 Mbps or 900 MB/s across eight streams. That is under ideal conditions - maximum signal strength, zero interference, zero processing overhead and zero packet overhead. Many router 802.11ac chipsets only support four streams and due to real life channel contention, you aren't likely to see more than two or three 160 Mhz channels chopping that maximum speed to about 250 MB/s. All of those speeds assume channel bonding and quite a few routers can't bond 80 Mhz channels cutting that speed in half again (125 MB/s). Then you have real world losses due to signal attenuation, antenna inefficiencies and interference.
The S5 was the first smartphone to support two MIMO streams. But two is not three, so lop another third off our speed figure (or lop two thirds off for the iPhone 6 which only supports one stream). You simply won't achieve your goal with the S5 or any other current smartphone. 350 Mbps is the upper end of the maximum speed you might expect to see from a high end MIMO PC card under ideal conditions in the same room.
In real life and through a wall, you should expect considerably slower transfers. And the type of traffic matters too e.g. TCP traffic overhead often reduces speeds three fold over UDP streams in router speed tests.
.
Click to expand...
Click to collapse
Thanks for detailed feedback, but then there is no benefit from implementing ac standard or 2 spatial streams suporrted by broadcom chipset when performance is comperable to WiFi n standard? But then again how did those guys here managed to pull of such results:
382MbpsDL
or
436Mbps
whit same hardware setup?

..

what kind of latency differences did you see between the wifi phone and your pc to the same server? i'm assuming speedtest.net or something like that?

This is strange as for my G900I I've been able to run an Internet speedtest at over 11 MBps (88mbps) over wifi on wireless N at my university which I imagine would have multiple connected devices. Wireless AC should be able to at least match the 88 mbps I had achieved.

Isriam said:
can you test with no encryption? wep/wpa completely off.
Click to expand...
Click to collapse
No, don't do this. You must setup a WPA2 security encription to get maximum rates on WiFi N and AC.
Then, remove storage bottlenecks. Don't use a external HDD connected to a USB2 port. Much less on the same router, since USB performance is much lower on those devices. You will need to use 2 devices on the same LAN. One wired for maximum throughput tests. A ramdisk or a SSD on the host would help too, since HDDS are limited to 120-80Mb/s transfer speeds.
If you are going to use a file copy as measure, make sure you make it into the internal SD card of the phone, since external will be limited to around 8-12mb writes depending on the card quality.
To test networks you would need ramdisk to ramdisk copies, but I don't know how to setup this on android.

This is rather interesting to follow

iPerf is available on android.
Quick measurement gave me ~110-169 Mbits/sec using default values on 40mhz WiFi N 5ghz setup.

drapos said:
iPerf is available on android.
Quick measurement gave me ~110-169 Mbits/sec using default values on 40mhz WiFi N 5ghz setup.
Click to expand...
Click to collapse
Thumbs up. Finding someone that uses IPERF for measuring proper network performance is golden. It irritates the heck out of me to find video's of people using ookla to measure their network speed, or like the OP, measuring against USB2. That's like measuring the speed of your new 600MB/s SSD installed on a SATA 1 controller and wondering why you are not seeing a significant improvement.

iperf is a little more complex than ookla though, and thats usually why. same reason most of us dont compile our own custom roms
really, there isn't much need to get over 100mbs on wifi for 90% of the public.

Isriam said:
iperf is a little more complex than ookla though, and thats usually why. same reason most of us dont compile our own custom roms
really, there isn't much need to get over 100mbs on wifi for 90% of the public.
Click to expand...
Click to collapse
Just picked up the s5 because no store will sell me the note 4 retail price.
Linksys WRT1900ac stock firmware, 5Ghz a/c connected @ 300Mbit
From the phone to wired linux box @ 1000Mbit
187 Mbit up 207 Mbit down but of course it fluctuates. I don't use wifi for anything that requires that much bandwidth anyway, but I do get my full internet speed of 175/30 using the phone.

This post is rather old, but some of us may still be interested.
I was looking for an alternative to usb cable to transfer files fast between a pc and galaxy S5..
I've used a wifi-300 stick connected to usb port on PC: TL-wn821N, and configured my S5 as a mobile access point.
An ftp server is running on the phone and an ftp client on PC. i am accessing the AP via AirmoreAP hotspot, with wpa encryption.
I am watching the download rate via crystal internet meter for windows.
And this is the result: 64mbps/56 mbps (DL/UL) UL reading a microsd card on phone and writing to sata2 internal disk on pc.
I am wondering if I can reach much faster speed with a wifi-ac stick.

Why is wifi download speed so slow?

I have the SM-T713 which is the 8" 2016 version. I have a 25Mbps connection and every other wireless device I own, including 2 older Samsung tablets (a Tab S 10.5 and a 2014 Note 10.1) will consistently pull about 30 Mbps download speeds. My S2 have never even made it to 12 Mbps. Oddly, the upload speed is consistent with the other devices. Anyone else seen this problem? I am running stock Nougat 7.0 and use whatever defaults there are for wifi settings. All speed tests were run in the same location in my house. It's not a huge deal for me but I find it odd that such a nice tablet appears to have a wifi defect.

I also have the 8" SM-T713 running 7.0. I get 70Mbps and more on my 100Mbps connection at home, always comparable to my other devices. Have you tried different channels on your router?

No I have not but other devices using the same channel don't have a problem. I connected to my guest network which is on the 2.4Ghz band and the download was what it should be! I don't understand why that would be but since it works, I'll take it. Thanks!

I just received my T813 yesterday and its speed is slower than my original Tab S 8.4. I have 200 Mhz Comcast system. On 5. Ghz both my Samsung S8 and T700 are Faster.
T700 => 154 Mbps
S8 => 194 Mbps
T813 =>103 Mbps

Same problem with my T713. Maybe I'l try 2.4GHZ

What's reporting the download speed, the router or the end device?
I would only trust the router statistics.
Are the sources the same and reliable?

I'll have to run a speed check on mine, but I will say that my tab S2 is capable of better sustained network operations than my S7 Edge. I stream video from a NAS server to a Chromecast receiver via my Tab S2 flawlessly, which is something my S7 Edge can't do - despite the fact that the S7 has a "faster" network connection.
All of the devices are on a 5G WiFi network.

Slow data transfer speed Android to PC?

Hi Guys.
I transfer data from my Android phone to PC regularly. transferring stuff from PC to PC with ethernet I get regular speed of 115MB/s via 1Gbps connection.
Now even when I'm standing right next to my ATT router I see a constant connection of 866 Mbps on my Note 9. But when I wirelessly transfer data from the phone to my PC or vice versa I only get 5MB/s on my Note 9 via ES File explorer.
Converting megabits to megabyte I should be getting a lot more than 5MB/s.
I am looking to get a faster router this holiday season. The router I'm looking at has AC3000 3,000 Mbps (1733 + 866 + 400Mbps) Dedicated Backhaul4x4 (1.7Gbps) WiFi TechnologyTri-band which will be right next to my work area.
should I expect any faster data-transfer via Wi-Fi if I'm standing right next to my router. Or do you guys think I will be limited to 5MB/s.
For comparison using PC I am getting 25-30MB/s wireless transfer speed with a 600Mbps connection using AC-7260.
My goal is to transfer stuff from my Android phone to my PC on Wi-Fi at a much faster speed. Please let me know if that's possible.
I understand that fastest most efficient way is USB C but sometimes i need to transfer just a single video I shot and it's much more easier to do it wirelessly via ES Browser as connecting the phone via USB C and waiting for 500 thumbnails to load in windows browser so I can locate that 1 file takes a few mins.

geronemo said:
Hi Guys.
I transfer data from my Android phone to PC regularly. transferring stuff from PC to PC with ethernet I get regular speed of 115MB/s via 1Gbps connection.
Now even when I'm standing right next to my ATT router I see a constant connection of 866 Mbps on my Note 9. But when I wirelessly transfer data from the phone to my PC or vice versa I only get 5MB/s on my Note 9 via ES File explorer.
Converting megabits to megabyte I should be getting a lot more than 5MB/s.
I am looking to get a faster router this holiday season. The router I'm looking at has AC3000 3,000 Mbps (1733 + 866 + 400Mbps) Dedicated Backhaul4x4 (1.7Gbps) WiFi TechnologyTri-band which will be right next to my work area.
should I expect any faster data-transfer via Wi-Fi if I'm standing right next to my router. Or do you guys think I will be limited to 5MB/s.
For comparison using PC I am getting 25-30MB/s wireless transfer speed with a 600Mbps connection using AC-7260.
My goal is to transfer stuff from my Android phone to my PC on Wi-Fi at a much faster speed. Please let me know if that's possible.
I understand that fastest most efficient way is USB C but sometimes i need to transfer just a single video I shot and it's much more easier to do it wirelessly via ES Browser as connecting the phone via USB C and waiting for 500 thumbnails to load in windows browser so I can locate that 1 file takes a few mins.
Click to expand...
Click to collapse
internal storage or sd card were you testing the transfer on?

bober10113 said:
internal storage or sd card were you testing the transfer on?
Click to expand...
Click to collapse
Internal storage. Copying directly to default download folder via ES File explorer.
Sent from my SM-N960U using Tapatalk

geronemo said:
Internal storage. Copying directly to default download folder via ES File explorer.
Click to expand...
Click to collapse
have tried the other way around?
use an app like wifi file explorer to start a local web server on the phone and then type in your computers browser the phones adress/port
if its also slow as hell then at least you'd have tested multiple ways...

Have you tried transferring the data using the default File Manager that comes bundled with Samsung's OS?