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XDA2 and Sandisk WIFI-SDIO Card - Very poor Performance?

Hello everybody,
I am using an XDA2 (=iMate) which sports a SDIO slot; furthermore, the device is listed in sandisk's compatibility listing. To connect to our wireless network (811.b), I use the Sandisk SDIO-Wireless-Lan-Adapter. I had no problems connecting to the access-point, I get a stable connection immediately, the indicated connection speed is 11 Mbit/sec. Since the distance to the ap is very small, link quality is near 100%.
The problem is that the maximum transfer performance I get is very poor. I get no more than 250Kbit/sec (=30Kbyte/sec), no matter if I do webbrowsing or simply copy files from other computer in the local area network. This is nothing compared to the ~5000Kbit/sec (=600Kbyte/sec) that an 811.b adapter should be capable of. I tried changing channels, but that did not change anything. I also hard-reseted my xda2 and installed nothing but the sandisk-drivers...no changes. Alternatively, I tried the driver from socket....works, but no changes in performance.
I have got the same problem at two different wireless networks (at work & at home), so it seems that the problem is on my system. I cannot test more than these two networks, since I do not know any others.
Has anybody got an idea what could cause this problem? How fast are your XDA2s with SDIO-Wifi?
Thanks in advance,
Stephen.

I had the same problem I returned my card and got a Socket one instead (from Expansys) I worked immediately.
After I returned it I read somewere that you must set your access piont to work at only the slower 11mbs and not the faster 22 or 56mbs and that will resolve the Sandisk problem.
I cannot verify this as I had returned my card, but my access piont was a Dlink one runnig at 56mbs
Sam

hi stephob12,
after reading this read i have googled around and found an article about socket sdio wlan card in a german computer magazine. the wrote that the sdio-specs do not allow transfer speeds > 35,7kb/sec regardless what sdio-card you are using (sandisk or socket). your performance of about 30kb/sec is really near the theoretical maximum limit.
i have no experience with those cards but i had planned to purchase one for my xda2 but i am slightly disappointet about that sdio limit :? . at home i use a bluetooth connection to my dsl access point and the speed is very good especially when you know that bluetooth with its 723kbit/sec is much slower than 802.11b with 11mb/sec.
i will now overthink whether to purchase a sdio wlan-card or not. at least not for the price of around 100 us$ or euros they have at the moment.
regards
peter

Hi,
can you post the URL of the article you found?
or send it per PM if you prefer ...
and what do you mean with "socked one", which one is it ?
and no one has any information about how the Compact Flash one is working, by using the back pack - this would be an alternative, don't you think???
ciao

the card is a "SOCKET" you can see it on www.expansys.com it is offered as an alternative to SANDISK at thew same price.

Thank you for the quick answer,
now I sow it, it seems to be more interesting than the Sandisk, I wanted to buy one ... but in that case it is worth to wait, to find a Socket near to where I live
May be I can find it in China or in the USA,
there is another brand - I forgot the name - which will be sold soon at CompUSA ...
I'm trying to find it ...
wil post it when I got it

Check out an excellent analysis on the subject by Tom's Hardware
http://www.tomsnetworking.com/Sections-article82-page1.php
Here's the related discussion on PocketPC Thoughts site
http://www.pocketpcthoughts.com/forums/viewtopic.php?p=247349&sid=1a14c5914dad534b4fa6abf6b3cc384b

Cheeper SanDisk SD WiFi card
Hi,
i think ive found (cheers google :wink: ) the same SanDisk wifi card u guys were talking about for $85 US (£47 GBP sounds much cheeper) at blueproton.zoovy.com so i was gunna ask if ne1 had ne experience with them but u obviously do.
just a couple of questions, am i right in guessing that SDIO stands for Secure Digital Input Output? how secure are these devices? what sorta encryption base do they use? and does ne1 know if there is any talk of bringing out a faster (22g or 54g) card on SD or CF?
Cheers
Smiley

Smiley,
SDIO WiFi card offers you WEP with 128bit key and this is your basic Wifi security. I am not sure if the SDIO card does any encyription. I suspect not.
As far as I know there is no 802.11g card (SDIO or CF) yet. I just read the news about a 802.11g chip for mobile devices. See below :
http://www.infosyncworld.com/news/n/4968.html
This may mean we may see cards based on this chip in the future or there may be products using this technology to deliver built-in Wifi capability.
Hope this helps. Regards

samcory said:
I had the same problem I returned my card and got a Socket one instead (from Expansys) I worked immediately.
After I returned it I read somewere that you must set your access piont to work at only the slower 11mbs and not the faster 22 or 56mbs and that will resolve the Sandisk problem.
Click to expand...
Click to collapse
does this mean that the socket one works at the full 11mbps withought having to downgrade ur main network? :?
Cheers k_kirk for the link, looks interesting but i can see that little beauty costing a small fortune!! :roll:
Smiley

Hello all,
I've got this Socket SDIO WLAN card, and it's terrible with regardws to throughput, but it's okay besides from that. I can't even stream a 300kb/s video, and that's not impressive... In cradle via USB it's of course okay, and having problems with SIP VOIP client as well, very very sad.. I wrote Socket, and got a reply that indicates they're sorry for this, but that it's caused by some HW-related issues on my device (QTEK 2020)
Urgh...
Fred

wifi solutions?

I'm trying to come up with a solution to add wifi to my vogue without loosing my storage, does anyone know of either a bluetooth wireless adapter that works with the Vogue or of an SD or MicroSD wifi card that also has storage? I've found an adapter for microSD to SD and already measured it and it should fit with the extended battery cover with the OEM battery.
Has anyone accomplished this? and how did you go about doing it?

You are basically screwed on wifi. You can probably set up a BT pan though at home.
There is a wifi micro SD card but very little testing has been done. The card would stick out of the slot probably 1/4" if not more.
http://www.spectec.com.tw/sdw823.htm
http://www.expansys-usa.com/p.aspx?i=140798&partner=froogle

jadesse said:
You are basically screwed on wifi. You can probably set up a BT pan though at home.
There is a wifi micro SD card but very little testing has been done. The card would stick out of the slot probably 1/4" if not more.
http://www.spectec.com.tw/sdw823.htm
http://www.expansys-usa.com/p.aspx?i=140798&partner=froogle
Click to expand...
Click to collapse
I've seen that, but having something stick out isn't a viable solution, which is why I found a microSD to SD adapter that will fit between the stock battery and the extended battery cover, this does work using the spectec SDIO wifi card, however I then lose my storage card. I've been looking into the eye-fi card which doesn't support AD-HOC I'm debating about picking up the 2gb version and attempt to hack the firmware to get it working but I was hoping there was a bluetooth wifi adapter I know they exist for palm but I haven't found one that works with ppc.
If anyone would be willing to help with trying to get the eye-fi 2gb+wifi card working on ppc that would be great.

Sean.Thon said:
I've seen that, but having something stick out isn't a viable solution, which is why I found a microSD to SD adapter that will fit between the stock battery and the extended battery cover, this does work using the spectec SDIO wifi card, however I then lose my storage card. I've been looking into the eye-fi card which doesn't support AD-HOC I'm debating about picking up the 2gb version and attempt to hack the firmware to get it working but I was hoping there was a bluetooth wifi adapter I know they exist for palm but I haven't found one that works with ppc.
If anyone would be willing to help with trying to get the eye-fi 2gb+wifi card working on ppc that would be great.
Click to expand...
Click to collapse
What are you talking about with the microSD to Sd adapter? You are basically screwed if you want wifi & have 2 options.
1. Dump Verizon & stich to AT&T
2. Get the Omnia or Touch Pro from Verizon.
Let me guess you don't have a data plan with Verizon

jadesse said:
What are you talking about with the microSD to Sd adapter? You are basically screwed if you want wifi & have 2 options.
1. Dump Verizon & stich to AT&T
2. Get the Omnia or Touch Pro from Verizon.
Let me guess you don't have a data plan with Verizon
Click to expand...
Click to collapse
No, I have Sprint and I have an unlimited data plan however it would be nice to add wifi especially since I'm now living in an area that sprin't doesn't have service in so I'm roaming on the verizon network and the data is slow as all hell.

looks like that wifi card is your best choice, you might try accessing your storage card via internet? Or just carry it around with the card...
and if you carry around a camera(I doubt you do): http://www.bestbuy.com/site/olspage...st=n&iht=y&usc=All+Categories&ks=960<br ></a>

I was wondering if there was a wifi card that operated throught the vogue's accessory slot, you know the one on the bottom...

acidreflux1 said:
I was wondering if there was a wifi card that operated throught the vogue's accessory slot, you know the one on the bottom...
Click to expand...
Click to collapse
Not sure what you mean by the accessory slot? Are you referring to the mini USB? At any rate the answer is no.

Air card is it possible

let me first start off by telling you that in no way shape or form am I skilled enough to be a developer nor am I asking the deleloper with the skill to take this on. I have searched a few forum and I really can't find any info about this subject.
I have a siearra wireless card USB598 the service is provided by Sprint, Does anyone know if it would be possible to make this work on the gtab? Or is it even possible to make it work in an android system?
When I plug the card in it powers up and seems to be doing what the card does but like you could guess it does nothing else. I didn't expect it to do anything else but I didn't think it would even power on.

I am not a developer either, but off the top of my head (devs feel free to correct me):
You would need drivers for the AirCard (no idea, but maybe the Linux drivers [if they are made for the card might work])
You would also need some sort of software to have the AirCard connect to the mobile network and to have the GTab use the Aircard as a means of communication
Dan

Velcro a mifi onto the back. : -)
Sent from my GTablet-TnT-Lite using Tapatalk

I have an air-card, as well. It's on my list of to do's but it will be tricky at best.
I had a sierra air-card a few years back, and got it to work with Ubuntu using some ppp commands. I figure that would be the most likely route in Android, since it has some *nix similarities, but I haven't gotten very far.
If you look at "dmesg", your card might be loading up. But the problem is actually getting old modems commands to it to get it running. I think.

ultimind said:
Velcro a mifi onto the back. : -)
Sent from my GTablet-TnT-Lite using Tapatalk
Click to expand...
Click to collapse
YES! Sprint Overdrive 4G! WooHoo!

It'd be a lot easier to try one of the 3G/4G-to-local wireless "boxes" available through many wireless providers (I use MyWi on my jailbroken iPhone 3GS though I'm looking into clear.com's service on the go). That way not only your GTablet, but your laptop and other devices can connect to the same connection and even your friends.

The air card is provided by my employer so I'm kind of stuck with it and getting into a myfi device isn't an option.
It's not really a huge issue I can always tether to my phone, It would just be nice to pop in the card and be up and running. The card also has gps built into it and I could see some use in that too.
I think drivers are going to be the biggest issue the MFG only supports MS and MAC, but there are some threads out on the web were people have gotten them to work in ubuntu. Beyond the driver issue there still needs to be some type of dialing software. On a windows box you can use a simple dialing software and dial a #77 and it will connect.
One other thing that this card has the ability to do is NDIS where the card becomes a network card and as soon as it's inserted into a pc it connects automatically but I'm almost 100% sure that it is still software based.
Thanks for the feed back.

greyspacealien said:
The air card is provided by my employer so I'm kind of stuck with it and getting into a myfi device isn't an option.
It's not really a huge issue I can always tether to my phone, It would just be nice to pop in the card and be up and running. The card also has gps built into it and I could see some use in that too.
I think drivers are going to be the biggest issue the MFG only supports MS and MAC, but there are some threads out on the web were people have gotten them to work in ubuntu. Beyond the driver issue there still needs to be some type of dialing software. On a windows box you can use a simple dialing software and dial a #77 and it will connect.
One other thing that this card has the ability to do is NDIS where the card becomes a network card and as soon as it's inserted into a pc it connects automatically but I'm almost 100% sure that it is still software based.
Thanks for the feed back.
Click to expand...
Click to collapse
For the ZT-180 tablets we got a number of these going as they looked like serial modem interfaces using ppp via the USB (might need to turn off/disable) any builtin diskstore... there sometimes required a build.prop edit to set the tty correct... I'd normally say look over on Slatedroid at our zt180 section as there were a few threads for different 3G dongles but mostly similar instructions... except slatedroid's been bottom up the last 30 or so hours... the zt-180 thread here is HUGE but I suspect you could find most of the same info scattered throughtout there also as maybe a starting point...

Novatel Ovation U727
The Ovation U727 supports Linux in addition to Windows & MAC. Data sheet indicates it has built in GPS-A in addition to 3G. Anyone tried one of these? I might get a used one & give it a try.

[Q] Wi-Fi problem solving...

I am, Like a lot of others, having trouble getting my WP7 HD2 to accept my Wi-Fi network...
So lets do some research and figure this out!
The phone is seeing my network. When the password is put in it won't connect. (Not the same issue that pulling the SD card fixes)
I'm Running an linksys N router with wpa2 pass code.
Can we get a list going of 1:Working set-ups and 2:Non working set-ups?
Might it be the N network? or that fact that it is dual speed? ( i.e. Simultaneous 2.4 GHz and 5 GHz bands)
With a little research we can figure this out, so please contribute...
Thanks!

I CANNOT get my password accepted.
I have a dlink di-524 wireless router that uses 128bit wep encryption and a 16digit hex passkey/password. I didn't 'activate' wp7, I just installed it. My 3g/2g worked fine, but no wifi (dealbreaker).
My 'mac filters' on the router is disabled.
Lets see what else... I used both a Kingston 4gb sdcard and a samsung 2gb card. I chose not to use my stock 16gb htc sdcard, because I didn't want to do all the data transferring, formatting, partition-rescuing etc.
I tried the sdcard in/out trick, and the 'flash wp7 with it in' and 'flash wp7 with it out' tricks too.
Nothing yet.

Buddhahb said:
Might it be the N network? or that fact that it is dual speeds that is the problem?
Click to expand...
Click to collapse
I agree, because that's the same thing as saying what it really needs is a droid that understands the binary language of moisture evaporators, and just knowing how to program binary locators isn't cutting it.
So based on that and my level of technical skill, yes, N network speed stuff.

Anyone out there figured out how to fix this? Does it have something to do with say, ' disabling wifi N in the registry ' and rebooting or something? I had to uninstall wp7 because of the wifi issue, so I hope someone knows a fix. Thanks in advance.

Adding dongle support

Hi All,
Im hoping someone can help. I have looked around these forums and been trawling the internet in search on an answer to the following with very little luck.
I have a Karbonn Smart Tab 1 with the following specs.
SIM: 2G, 3G
3G enabled: yes
Screen size: 17.8 cm
Screen quality: Capacitive 5 Point Multi Touch Screen
Processor: 1.2 GHz
OS: Android v4.0.3 (Ice Cream Sandwich)
Primary camera: 2 MP Front Camera
Expandable Memory up to 32 GB
Full HD Video Playback up to 1080p
Color: Silver grey back and black sides
Its a very nice little tablet for the price you pay.
The problem im having is connecting my Huawei E173 dongle.
When i plug it in all i get is the storage registering and thats it.
I have contacted the manufacturer to ask which dongles are support and non of them are available to me (problems of living in Zimbabwe)
My questions is:
What is the best way to build in support for this device on my Karbonn?
Is it something a noob (like my self can do).
I did use Free BSD about 6 years ago but have had little interaction with Linux / unix since then.
Any help would be appreciated.

hortiprawn said:
I have a Karbonn Smart Tab 1 with the following specs.
SIM: 2G, 3G
3G enabled: yes
[...]
Click to expand...
Click to collapse
Why do you need the 3G Dongle when your tablet got 3G support already built in?

No sim card slot
kuisma said:
Why do you need the 3G Dongle when your tablet got 3G support already built in?
Click to expand...
Click to collapse
The 3G is provided by a list of supported dongles and not (unfortunately) by a sim card slot.

hortiprawn said:
The 3G is provided by a list of supported dongles and not (unfortunately) by a sim card slot.
Click to expand...
Click to collapse
Ah, ok. Confusing spec.
In general, implementing support for a new dongle is quite complicated require a new Linux kernel build, re-flashing the tablet etc. Not very noob friendly at all.
But if you are very lucky, your tablet already got the required drivers compiled into the kernel. The trick is that the kernel can't see the 3G modem as is right now. This is because it is identifying itself as a storage device, and not a modem. In the dongle there's a software switch you need to turn, changing it from storage device to modem. Try flipping it, and see if the kernel and the rest of the table accepts it.
You need a software to flip this switch you'll have to download and compile. You able to compile native code for your tablet?
You find the software here: http://www.draisberghof.de/usb_modeswitch/
Edit: You are in luck. there's a pre-compiled binary for ARM at the same site. http://www.draisberghof.de/usb_modeswitch/usb_modeswitch-1.1.9-arm-static.bz2
Edit2: You want to read this as well I just stumbled upon: http://iamswagat.blogspot.in/2012/05/configure-funbook-to-use-any-dongle-and.html