USB Tethering on Linux problem solved - Networking

I've had an issue tethering my WinMo 6.5 Energy ROM on an HTC Fuze with Linux. The connection itself was fine but browsing was flaky. Some sites worked while others did not.
I finally tracked it down to an MTU problem. You basically need to reduce your MTU size to get it to work (the lower the MTU size, the more packet overhead and hence lower effective throughput). The default MTU size was 1478, reducing it to 1200 solved the issues I was having. If your phone is connected as eth1, the command to change it is:
ifconfig eth1 mtu 1200

pmugabi said:
I've had an issue tethering my WinMo 6.5 Energy ROM on an HTC Fuze with Linux. The connection itself was fine but browsing was flaky. Some sites worked while others did not.
I finally tracked it down to an MTU problem. You basically need to reduce your MTU size to get it to work (the lower the MTU size, the more packet overhead and hence lower effective throughput). The default MTU size was 1478, reducing it to 1200 solved the issues I was having. If your phone is connected as eth1, the command to change it is:
ifconfig eth1 mtu 1200
Click to expand...
Click to collapse
thank it works
taker2

glad it help !!

Good idea, thanks!

It save my ass.. Thanks dude you ROCK!

better solution
http://kaffeine.cf/2016/02/05/forcing-mtu-for-clients-of-androidap/

Related

Interesting WiFi Reg Setting

Did anyone else notice this registry entry?
[HKLM\Comm\TIACXWLN1\Params]
"EnableElpMode"=dword:00000000
If I'm not mistaken, the TyTn has a TI ACX100 WiFi chip, and this chip has TI's "Enhanced Low Power(tm) Technology". I've enabled it on my TyTn, and so far it seems to do no harm. I'll have to see if my battery power improves over the next week.
Correction...
Ah, the htc TyTn has TI's TNETW1250 chip. My mistake.
In any case, I think the EnableElpMode (if it really does work) would be a good thing. Also, I've seen a few webpages suggesting an additional key:
"dot11SupportedRateMaskG"=dword:00000008
Apparently this key tells the driver it's okay to do any 802.11g speed. I'm going to go find out!
let us know how it goes....
1st set of test results
First, I should detail the equipment I'm using.
My wifi router: D-Link 624.
My phone: htc TyTn, QTEK ROM 1.35.255.2 (Radio 1.18.00.10)
My laptop: IBM Thinkpad T22, w/ Hawking Techmologies HWC54D wifi card, Win2k.
My PC: P4 2.4GHz, asus P4P800 (has Gb lan), WinXP.
Results so far: (using http://www.bandwidthplace.com/speedtest, and sitting right next to my DI624)
PC: 5.3 Mb/s
Laptop (w/wifi): 3.4 Mb/s
TyTn: ~250 kb/s
Notes:
In one test I set the DI624 to use 802.11g only. Without any registry tweaks, the TyTn connected up just fine. Therefore, I suspect that the dot11SupportedRateMaskG key is no longer needed.
Curious to see if I could boost the TyTn's wifi speed, I began fiddling with all of the different registry settings under that heading (listed above). The wifi speed always hovered in the 250 kb/s range. It seems as though none of those settings significantly changed the wifi speed.
There was one key that did make a big difference in the time it take to actually connect up to the wifi router. Setting "dot11ShortPreambleInvoked" to 1 greatly sped up the time from wifi-off to wifi-connected-and-ready. (My DI624 was also configured for a short preamble.) Without the short preamble, it was taking between 10-30 seconds for the TyTn to connect up. With the short preamble it's between 5-10 seconds.
(Side note: The "Testmode" key didn't seem to do anything - at least I didn't see any difference when I set that to 1.)
One other key that did make a small difference:
[HKLM\Comm\Tcpip\Params]
"TCPWindowSize"=65536
I played around with this key, and it seems like setting it to 4096 "optimized" it just a bit. I got around 270 kb/s with that setting. Setting it bigger (say, 256k) slowed things down (~240 kb/s), while setting it smaller (say, 1k) really slowed things down (~170 kb/s!).
I'm going to continue fiddling around with the settings and report back again. It just seems to me that the TyTn should be able to achieve a wifi speed at least above 1 Mb/s. I would appreciate it if everyone else would check their wifi speed and post the results here as well.
p.s. If anyone knows of a PocketPC utility that can show detailed wifi connection information (such as speed, frequency, protocol, etc.) please let me know!
250 kpbs, that cant be correct? can it?
that would mean that HSDPA is faster than hermes wifi? I will test mine when my wife gives it back to me, im grounded for the holiday season. lol
something is terribly wrong here......
yes, there is something wrong here... I think you need to turn on flight mode before you run your wireless test again, and here is why... On my phone i have my data connection set to always on. If i turn on wifi then my data connection doesnt disconnect and will result in low speeds since its not using the wifi. If i turn mine on flight mode then run tests then everything is good. Here is my results using the same site as the OP
PC = 1.9
phone = 1.4
I am using a 3meg adsl pipe with a wireless SMC router with mac filtering, regular wep, and a static set up on the LAN side.
Progress!
I changed my wifi speed test to: http://www.dslreports.com/mspeed
Surprisingly, that speed test reported 1647 kb/s for my TyTn!
Fiddling with the TCPWindowSize value, it seems that 64k is optimum - well, at least with the dslreports test.
i usually use dsl reports, but i wanted to maintain some kind of constant for your testing
Wireless settings / b-g connections
Hi, I;ve just got a TyTn but it won't connect to my Netgear 802.11g router?? Is it b-only? Is there a hack (like for the Universal) which would enable me to connect to g networks? Would I still be able to connect to b-networks?
Thanks!
motoroller said:
I;ve just got a TyTn but it won't connect to my Netgear 802.11g router??
Click to expand...
Click to collapse
My TyTn is fairly new (bought last month) and I can configure my DI624 to 802.11g only, and connect up just fine. What ROM version does your TyTn have? I'm on the QTEK 1.35.255.2 ROM. If you TyTn is right-out-of-the-box, it's probably got the QTEK 1.18.xxx.x. If that's so, you should consider unlocking it and upgrading it to one of the latest ROMs.
motoroller said:
Is it b-only?
Click to expand...
Click to collapse
The htc TyTn (Hermes) has the TI TNETW1250 wifi chip. This chip is 802.11g capable.
motoroller said:
Is there a hack (like for the Universal) which would enable me to connect to g networks?
Click to expand...
Click to collapse
You can try adding this registry key (although I'm not sure it will do anything on the TyTn):
[HKLM\Comm\TIACXWLN1\Params]
"dot11SupportedRateMaskG"=dword:00000008
motoroller said:
Would I still be able to connect to b-networks?
Click to expand...
Click to collapse
Yes. Wifi chips that support 802.11g always support 802.11b (AFAIK).
Good luck!
shogunmark said:
i usually use dsl reports, but i wanted to maintain some kind of constant for your testing
Click to expand...
Click to collapse
Yeah, after checking out several speed test websites, I'm beginning to doubt the one on bandwidthplace. Actually, while testing out several other speed test websites using my PC, I've gotten a smattering of different speeds reported. Most seemed to be within reason and about what I expected, but a few were either obviously too slow or absurdly too high. (Ony reported above 100 Mb/s downstream, even though my cable modem is a DCM-202!) The dslreport site seemed to be believable to me, so I'm sticking with it for now.
If it makes you feel better i work for AT&T in the DSL maintenance department and have for 6 years.. anytime i have anyone that reports slow speed issues i always take them to dslreports and use those speedtests.. they seem to be the most reliable that i have found..
Okay, I'll trust dslreports' speed test then!
So now the question is: Does a wifi speed of ~1600 kb/s sound "right" for the TyTn?
What makes me wonder is that when I run the dslreports speed test on my laptop via wifi, I get ~3.2 Mb/s. So I know my DI624 can pump out the bits! (Well, for 802.11g's max of 54 Mb/s, that's still kinna lame.)
I've pretty much exhausted all of the registry settings I can find. Got any others I can/should look into?
there are other things you need to take into account, the processor, the amount of ram, etc.. when you run a speed test it rely's on your pc to process the information as it comes down the pipe... if you really wanted to test it you could build a pc that resembled the phones specs and run a speed test and see what you get.. i would make a bet that it would resemble the same results
Do you know any registry key to improve the wifi trasnimt power?
onlineemails said:
Do you know any registry key to improve the wifi trasnimt power?
Click to expand...
Click to collapse
have you already went to settings>connections>wireless lan>power mode tab and changed the slider to best performance?
did it but no effects
Wi-Fi Reg Setting
I went through this post and compared the results to waht I have right now! Not too encouraging!
I have a 4MB connection rated at average to be a 3.5MB at www.speakeasy.net/speedtest using the New York Host!
Wi-Fi Reg Setting
I went through this post and compared the results to waht I have right now! Not too encouraging!
I have a 4MB connection rated at average to be a 3.5MB at www.speakeasy.net/speedtest using the New York Host!
I run a WRT54G with upgraded firmware downloaded from kinksys. Before that the damn thing wouldn't even connect to my TYTN.
Right now I am getting connection speeds through WiFi between 650kbps and 1200 kbps according to www.2wire.com speed test.
I have a Dopod 838Pro bought in HK in November to which I didn't do a Thing yet!
Cheers
Is 1.6 Mb/s the best TyTn can do?
Well I've fiddled with all the registry settings I could possibly fiddle with, and dslreports won't show anything above 1.6 Mb/s for on my TyTn (using PIE).
Has anyone gotten anything higher with their TyTn?

wifi speed @811.g just 39Kb/s

/edit: topic must be: 802.11.g
hi there,
got my HD2 (stock vodafone rom) on friday and until now i am very statisfied, everything set up to my needs etc.
Today i wanted to stream videos from my win7-pc to the HD2. Installed TCPMP and Resco Explorer. Everything works fine except for the buffer-lags. i experimented with the buffer settings A LOT but nothing worked out. then i wanted to copy a movie to my HD2 and realized the speed in Resco: 39.2 Kb/s (no typo)
Copying to phone memory or SD-Card is the same.
My router (Fritzbox 7170) tells me that my HD2 is connected with 54MBit/s.
I even installed the 802.11.n CAB though my router doesnt support this speed. didnt work out either.
any help plz?
excuse my english - im from europe.
Thanks in advance
ElveZ
/EDIT: problem solved. wifi energy plan was set to battery life... works with 700+Kb/s set to performance.
keep up the good work in here
No wonder!
Gah!! I thought my hd2 wifi router was doomed to be slow at no more than 40kb/sec ! I thought i over heated it up and caused it to be permanently slow. I went nuts jumping from rom to rom, radio to radio hoping to get the full internet speed,...until you post showed up! (No, 'Search' didnt help me out much this time, had to browse through 26 pages of irrelevant post)
Now im gonna try to "Best performance" and see if it makes any difference.
Right Sorry for posting here but I can not make a Thread :S
Ok I tested my HD2 on a few speed test sites and then tested on the same site my laptop.
right on
broadbandspeedchecker.co.uk
Laptop: 15000 kbps Download
720 kbps Upload
HD2 Apparently: 20000 kbps Download
AND 40000 kbps Upload (WTF)
and then I was like ok lets try another site
broadband.talktalk.co.uk/products/broadband-guide/broadband-speed-test
Laptop: 16000 kbps Download
720 kbps Upload
HD2: 22000 kbps Download
44000 kbps Upload
Right, why does my phone get such a massive upload ? or is this some sort of a bug or false reading
P.S.
The HD2 is connected to the same WiFi as the laptop as well as the 3G.
"The Internet transfer/download speed of my laptop via 3g ith my hd2 as the wifi router " = 40kb/sec, which is Junk, btw.
"The Internet transfer/download speed of my laptop with my 3g usb modem" = 300 - 600kb/sec which is the speed I wished my connection was, via the same 3g connection but using the hd2 as the wifi. And I hope that changing the "Power mode" of the hd2 wifi to "Best performance" (thanks for the OP for pointing it out) , i could reach the speeds as my 3b usb modem. Gonna do a bit of testing 1st...
================
Rom - Miri dinik v17.0
radio - 2.11.50.20
I get about the same download with wifi and 3G. Normal? EDIT: Turning it to Performance mode tripled my speed via WiFi.
Munto: What browser on the HD2 are you using?
I'm using Skyfire
Yeh just tested with opera 10 and now the speeds are close the the PC's results.
I guess Skyfire is full of BS.
Munto said:
I'm using Skyfire
Click to expand...
Click to collapse
Ah, Skyfire (and Opera Mini 5) uses server-side rendering so you won't get an accurate result. Skyfire's server downloads the pages, applies compression magic, and sends it to you, so the result is skewed by their probably ultra-fast servers. I think Opera 9.7 works the best for speed tests.

Facebook/Twitter feed wont load on WiFi issue SGS2

Hi all,
Ive been having a problem whereby my twitter and facebook feeds wont refresh after browsing the net for 15 mins or so on WiFi.
They work without problems based on phone signal but when using WiFi its as if the signal just drops out even though it says not, and the browser will work just not facebook/twitter. A phone restart or toggle off/on of WiFi doesnt fix the problem.
Im on 2.3.3 and firmware version KE2.
Any ideas or anybody been having the same issue? Ive done some searching but cant find any help...
Sent from my GT-I9100 using XDA
Any body any ideas?
I'm struggling with this. Thinking of selling it and getting a Sensation...
It may be a defect on your phone. Try bringing it back to the shop and ask for a replacement if you can repeat the issue on their Wi-Fi.
And I wouldn't really recommend on getting a Sensation because of Wi-Fi issue because the Sensation has a worse "death grip" issue (YouTube that and you will see quite a lot of videos on that), other than a very small 1.5GB internal storage/
luke222010 said:
Hi all,
Ive been having a problem whereby my twitter and facebook feeds wont refresh after browsing the net for 15 mins or so on WiFi.
They work without problems based on phone signal but when using WiFi its as if the signal just drops out even though it says not, and the browser will work just not facebook/twitter. A phone restart or toggle off/on of WiFi doesnt fix the problem.
Im on 2.3.3 and firmware version KE2.
Any ideas or anybody been having the same issue? Ive done some searching but cant find any help...
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Does your wifi routes data through a proxy. If yes apps wont be able to connect to the internet on wifi, the browser can.
This is an android issue so shifting to sensation wont help.
Hello Guys,
I can think of two possibilities.. Cause, I had somewhat the same problem in the earlier Galaxy S (I am now on Galaxy SII).
First Scenario :
Both Facebook and Twitter have a refresh timing option under Settings. You must set it to minimum. (For facebook, minimum refresh is 30 mins and for Twitter, Its 15 Mins).
Second Scenario :
I assume that you are using WiFi and I also assume that you have a repeater installed. In that case, you must tinker with the Network WAN settings of your repeater. Typically, the broadband "modem" is set to MTU = 1500 and the "Repeater" MTU is also set to 1500. This causes some problem in uploading data. Now, as facebook and twitter ( as also Android Market ) sends some data first and then downloads data, if the sendng is problamatic, the downloading of data would also not be good. ( A typical way to check it is to try uploading some test snap on facebook. If the test snap is uploading, then your home Wifi is working all right). However, if the picture uploading is not getting through, try to reduce the MTU. This guide will help you :-
"Max MTU: How do I find mine?
The MTU setting controls the maximum ethernet packet size your PC will send (you did know the Internet works in packets, didn't you?). Why a limit? Because although larger packets can be constructed and sent, your ISP and Internet backbone routers and equipment will chop up (fragment) any packets larger than their limit. These parts are then reassembled by the target equipment before reading. This fragmentation and reassembly is not optimal.
MTU and Windows and Defaults
Unless otherwise set, Windows defaults MTU to 1500, or a lower value of 576 for external networks. 1500 is OK unless you are running PPPoE, want to use IPSec (Secure VPNs) or both, then it's too big. 576 is not efficient for the broadband/Internet; it's too small.
Finding the largest MTU, by EXPERIMENT
If your MTU is too low already, maybe 576, the following method will not be able to detect whether you can switch to an optimal size. So first follow "CHANGING MTU for PPPoE" to reset MTU to 1500, reboot and then come back to this!
The best value for MTU is that value just before your packets get fragmented. How do you find that out? By using Ping at an command prompt.
Windows 2000/XP users:
Go to Start/ Programs/ Accessories/ Command Prompt and type the following:
ping -f -l 1472 www.dslreports.com
(That is a dash lower case "L," not a dash "1." Also note the spaces in between the sections.)
Linux users:
ping -s 1472 www.dslreports.com
OS X users:
ping -D -s 1472 www.dslreports.com
Linux and OS X commands are case sensitive.
Press Enter. Then reduce 1472 by 10 until you no longer get the "packet needs to be fragmented" error message. Then increase by 1 until you are 1 less away from getting the "packet need to be fragmented" message again.
Add 28 more to this (since you specified ping packet size, not including IP/ICMP header of 28 bytes), and this is your MaxMTU.
Note:If you can ping through with the number at 1472, you are done! Stop right there. Add 28 and your MaxMTU is 1500."
I hope with the above, the prroblem gets sorted. If you succeed, please leave your experience here...
Regards.
Hi all,
Thanks for your replies.
Neither facebook nor twitter work at all on wifi now. I've figured out that they DO work on wifi on friends/family routers, just not mine!
Whats weird is facebook will work if I login through a browser such as dolphin or firefox, but not through the official facebook app itself. Same with twitter.
My max MTU is set to 1492 - i've checked this is correct using the instructions you provided and it is...
Another issue is browsing the internet - sometimes if i open more than one tab, it stops working altogether, and subsequently any other app that requires access to the internet will not work also. The only way to resolve this issue is by turning the phone off and back on again.
Really struggling with this. Could it be as simple as switching channels within the router?
Im open to suggestions so any ideas i'd appreciate!
Thanks again,
Luke.
Dear Luke,
Ok.. Thanks for the input.. See, if your facebook and twitter is working fine on other Wifi's, it means that there is no problem with your phone setup.. also, when you are using on 3G, there is no problem and that confirms that your handset has no problem at all.. so dont worry on that count..
Read my post carefully..
I had suggested you try upload a pic on facebook using wifi (the one which has problem).. If you are not able to upload, that should confirm that your home wifi has to be set up properly. There are two types of installations of Wifi.. (1) in which the Broadband Modem and Wifi is in a single device and (2) where you have a broadband modem and then a seperate wifi device.
Now the broadband modem also has its seperate MTU which it uses to interact with the broadband server.
Similarlt, the wifi decive connected to the Broadband modem also requires its own MTU to communicate with the broadband modem..
These two are therefore different settings.
You dont typically have to change the settings on the Modem, but only the wifi device. When I faced a similar issue, I had to check and reduce it to 1430 myself so that it works properly.. Try the same.. Try reducing wifi MTU to 1430 leaving the modem MTU to 1500 (default). If you do it right, you will solve the problem...
I had exactly the same problem but I found no real help on the internet android forums.. But that history..
Now, I know this is the real problem and the cure is easy... "Just set the MTU on wifi (device) to 1430... DONE.
Try rebooting the router, and then flush dns settings in cmd.
how to flush dns http://www.tech-faq.com/how-to-flush-dns.html
akshayadv said:
Dear Luke,
Ok.. Thanks for the input.. See, if your facebook and twitter is working fine on other Wifi's, it means that there is no problem with your phone setup.. also, when you are using on 3G, there is no problem and that confirms that your handset has no problem at all.. so dont worry on that count..
Read my post carefully..
I had suggested you try upload a pic on facebook using wifi (the one which has problem).. If you are not able to upload, that should confirm that your home wifi has to be set up properly. There are two types of installations of Wifi.. (1) in which the Broadband Modem and Wifi is in a single device and (2) where you have a broadband modem and then a seperate wifi device.
Now the broadband modem also has its seperate MTU which it uses to interact with the broadband server.
Similarlt, the wifi decive connected to the Broadband modem also requires its own MTU to communicate with the broadband modem..
These two are therefore different settings.
You dont typically have to change the settings on the Modem, but only the wifi device. When I faced a similar issue, I had to check and reduce it to 1430 myself so that it works properly.. Try the same.. Try reducing wifi MTU to 1430 leaving the modem MTU to 1500 (default). If you do it right, you will solve the problem...
I had exactly the same problem but I found no real help on the internet android forums.. But that history..
Now, I know this is the real problem and the cure is easy... "Just set the MTU on wifi (device) to 1430... DONE.
Click to expand...
Click to collapse
Hi again,
Allow me to give you a bit more info...
I'm on a talktalk (rubbish!) landline/internet package. My netgear router is plugged directly into the phone line via an adsl cable. The router is configured for wifi access. I presume as I have no seperate device, that the modem is built into the router also.
I tried uploading a picture to facebook and it failed after a few minutes of trying.
Basically last night I tested the MTU via the command line interface using the ping command you provided. At 1464 i no longer received the fragmented packet errors, so i presumed adding 28 to 1464=1492 was the correct thing to do, and so I did this and then checked that in the WAN settings in the router config the MTU value was set to this which it already was.
I'm not quite sure how I set the MTU value specific to the modem if doing so under the WAN settings has not already applied it for both wifi and the modem. Can you provide further assistance if I should be changing a setting elsewhere?
Some further info - I have changed my router so it does not broadcast the SSID, and so that you can only connect to it if your MAC address is listed under the allowed devices which my phone is. I'm not sure if this would cause a problem - it never with the iPh*** (he who should not be named!) i had previously!
stoney73 said:
Try rebooting the router, and then flush dns settings in cmd.
how to flush dns http://www.tech-faq.com/how-to-flush-dns.html:
Click to expand...
Click to collapse
Hi,
I had never thought of doing this but will give it a go tonight.
Thanks,
Luke.
luke222010 said:
Hi,
I had never thought of doing this but will give it a go tonight.
Thanks,
Luke.
Click to expand...
Click to collapse
Its probably not the answer, but its one of those silly things...and the worst it can do is just freshen the connection.
EDIT:I messed up the previous link. so here it is: http://www.tech-faq.com/how-to-flush-dns.html
Just set it to 1464 then. We are on the right track.
Sent from my GT-I9100 using XDA App

Unable to access internet over WiFi for few apps

I am facing a weird issue when using a Wifi connection on my tablet (Karbonn Smart Tab 10)
I can easily connect to the WiFi router at my home and access the internet, but only the Google Play Store App and Facebook App cannot access internet via WiFi.
Using Chrome browser, I can access Play store and every other website but not facebook.com
This issue is only happening in my tablet running on JB and other 2 andriod GB phones at my place work fine using the same WiFi router.
Furthermore, if I use any other WiFi network or 3g connection I do not face the above issue!
I have tried searching across forums and have done the following:
1. Reset the tablet to factory setting 3 times
2. Reset my WiFi router to factory setting
3. Updated the latest firmware for my Dlink wireless DIR300 router
4. Tweaks like enable 11g only setting on my router, removed all levels of protection and kept the wifi unsecure
5. Disabled all firewall options on the router
6. Configured WiFi on the tablet using WPS
7. Installed Firefox and Dolphin browser, but still cannot access facebook
8. Used static ip and also Changed dns to 8.8.8.8 and 8.8.4.4
None of the above has worked... Can anyone help me pls...
Thanks,
Rahul
Do you have a terminal program installed on your device? Try pinging those sites.
Problem Solved!
MrObvious said:
Do you have a terminal program installed on your device? Try pinging those sites.
Click to expand...
Click to collapse
Thanks for the reply!
But last night I keep awake upto 4AM and tried every other thing on my tab and the wifi router.
Finally I managed to resolve the issue!!
I changed the MTU in my WiFi router from 1500 to 1300 and now Playstore and Facebook apps can access internet over wifi.
I never knew what MTU was, but read wikipedia to find out. The max possible MTU is 1500 which was the default setting of my WiFi router.
Pls refer this article on wikipedia with topic as Maximum_transmission_unit (Cant paste the direct link here as the forum doesnt allow new members like me to do so...)
Moral of the story learnt my me: Do not buy cheap Chinese tabs, u will surely regret later!
I had the same issue. Thank you:good:
Thanks a TON!!!!!!
y5krahul said:
Thanks for the reply!
But last night I keep awake upto 4AM and tried every other thing on my tab and the wifi router.
Finally I managed to resolve the issue!!
I changed the MTU in my WiFi router from 1500 to 1300 and now Playstore and Facebook apps can access internet over wifi.
I never knew what MTU was, but read wikipedia to find out. The max possible MTU is 1500 which was the default setting of my WiFi router.
Pls refer this article on wikipedia with topic as Maximum_transmission_unit (Cant paste the direct link here as the forum doesnt allow new members like me to do so...)
Moral of the story learnt my me: Do not buy cheap Chinese tabs, u will surely regret later!
Click to expand...
Click to collapse
I had the same issue dude. I did device reset for couple of times. Was not sure whether the problem was with the ISP or with my Android OS or with the router. I was so damn frustrated with it. FINALLY it got resolved!!! I literally danced on my feet after it started working.
Thanks again!:laugh:
Why blame the chinese
y5krahul said:
Thanks for the reply!
But last night I keep awake upto 4AM and tried every other thing on my tab and the wifi router.
Finally I managed to resolve the issue!!
I changed the MTU in my WiFi router from 1500 to 1300 and now Playstore and Facebook apps can access internet over wifi.
I never knew what MTU was, but read wikipedia to find out. The max possible MTU is 1500 which was the default setting of my WiFi router.
Pls refer this article on wikipedia with topic as Maximum_transmission_unit (Cant paste the direct link here as the forum doesnt allow new members like me to do so...)
Moral of the story learnt my me: Do not buy cheap Chinese tabs, u will surely regret later!
Click to expand...
Click to collapse
Good finding. But why you blame the chinese tabs? It is a very strange fix, MTU is to do with the device (in this case is the router)
Another possible solution
Hi,
Came across this thread whilst looking for a solution to a problem with my wife's tablet (a Samsung). Tablet seemed to access the internet fine in the stock browser but many apps such as Facebook, Google Play etc did not work.
In the end it turned out to be the fact that many apps use SSL (secure https) for their connections and the tablet was rejecting all SSL certificates because the date/time was wrong (specifically the date - 13 years back!).
Setting the correct date fixed the issue so I'm posting the solution here for anyone else who comes across it.
electro_dan said:
Hi,
Came across this thread whilst looking for a solution to a problem with my wife's tablet (a Samsung). Tablet seemed to access the internet fine in the stock browser but many apps such as Facebook, Google Play etc did not work.
In the end it turned out to be the fact that many apps use SSL (secure https) for their connections and the tablet was rejecting all SSL certificates because the date/time was wrong (specifically the date - 13 years back!).
Setting the correct date fixed the issue so I'm posting the solution here for anyone else who comes across it.
Click to expand...
Click to collapse
Hi, Thanks for your reply!
I actually figured out what the issue was with my tab. There is a setting in the wi-fi router which is known as MTU (Maximum transmission unit). By default this is set to 1500 in most routers. I reduced it to 1000 and now everything is working fine in my tab. However, I feel my internet gets disconnected frequently after changing the MTU to 1000..
tinbox134 said:
Good finding. But why you blame the chinese tabs? It is a very strange fix, MTU is to do with the device (in this case is the router)
Click to expand...
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I blame the Chinese tab because only for accessing internet via the tab I had to reduce the MTU to 1000. With the MTU set to 1500 in my router all other devices in my home can connect to the internet without any issues. Problem is with the tab and not with the router.

OP2, wifi speed issue anyone?

Hello,
i'd like to know if any of you is experiencing wifi speed issue with the OP2.
Let me specify i'm having the same issue regardless of the rom, stock or CM12 based.
I've got a 20Mbit/s connection at home. Speedtest run from PC, laptop, and other phones shows consistent results, very close to the 20Mbit limit.
On the OP2 i can't get over 4-5 Mbit/s
I've searched for the forum before posting, found a few complaints but no solution.
On the web, i've found some advices to try to change the 802.11 radio speed from Router settings. I've tried it, but no solution.
I can't guess where the OP2 limit / issue comes from.
Any hint will be really appreciated.
I thought it would make sense post that after 24h studying the issue it SEEMS i finally fix it.
After a lot of testing with changes of the wi-fi settings phone size and router side, it seems that what actually solved my issue was to set the correct MTU size in the router options for pppoe connections. It was for some reason 1476, i've set it to 1492 as recommended for the pppoe protocol.
I've no clue how MTU size can affect speed and performance only on a single device of all the connected ones: i would have expect the same speed issue would affect my laptop and my pc too. So, i'm honestly not sure which is the relationship. Fact is, since i changed MTU size, OP2 goes at maximum speed allowed by my connection as well as the other devices on the network.

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