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Weird wifi problem

I am having the strangest problem with my wifi. When connecting to the wifi network at my friends house, the network seems to have some sort of problem keeping both of us connected. He is using an HTC EVO currently on CyanogenMod7, and I am on the EB16 PnP, but the problem occurred when he was on the stock rom and I was on the 2.1 PnP and the EA11 PnP.
Basically what happens is when I connect to the network, he loses internet connection, and sometimes wifi connection on his phone, and then we both get stuck in a kind of loop where both of our phones will alternate between failing to connect, saying that the wifi password is incorrect, a failure to obtain an IP address, and brief periods of connectivity.
We have tried many solutions including resetting the router, which sometimes works for an hour or so. We have tried setting up reserved IPs for each of our phones on the router to no avail, we have tried many different router and phone settings and nothing seems to solve the problem. His router is a DLink DIR-665.
Any help on this issue would be greatly appreciated.
ETA: We have both been on the same wifi network at other locations, and I have been on other wifi networks with other people using android phones, including a Captivate and another Mesmerize without issue.

Mesmerizeuser said:
I am having the strangest problem with my wifi. When connecting to the wifi network at my friends house, the network seems to have some sort of problem keeping both of us connected. He is using an HTC EVO currently on CyanogenMod7, and I am on the EB16 PnP, but the problem occurred when he was on the stock rom and I was on the 2.1 PnP and the EA11 PnP.
Basically what happens is when I connect to the network, he loses internet connection, and sometimes wifi connection on his phone, and then we both get stuck in a kind of loop where both of our phones will alternate between failing to connect, saying that the wifi password is incorrect, a failure to obtain an IP address, and brief periods of connectivity.
We have tried many solutions including resetting the router, which sometimes works for an hour or so. We have tried setting up reserved IPs for each of our phones on the router to no avail, we have tried many different router and phone settings and nothing seems to solve the problem. His router is a DLink DIR-665.
Any help on this issue would be greatly appreciated.
ETA: We have both been on the same wifi network at other locations, and I have been on other wifi networks with other people using android phones, including a Captivate and another Mesmerize without issue.
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sounds like it's his Router!!!!

elijahblake said:
sounds like it's his Router!!!!
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I agree, my roommates and I all have problems connecting to our belkin via certain laptops, androids, bb's and iphones. some days are better than others with all. I guess that's the price we pay for a low end router.
Sent from my SCH-I500

[Q] Fix 3.2 Bluetooth-Tether issue?

Hi!
Since Honeycomb 3.2 there is an issue with bluetooth tethering. The first time it works, but after disconnecting you won't be able to reconnect until you have rebooted the Xoom!
That's absolutely annoying... And I think at least for root-users (like me) there should be another way.
I couldn't find any fix on the internet. But I think it should be possible to maybe reload the bluetooth kernel module or something. Maybe it's mobule bcm4329? Does anyone know how to do that (modprobe doesn't work).
Or are there any other ideas?
Greetz
McDV

McDV said:
Hi!
Since Honeycomb 3.2 there is an issue with bluetooth tethering. The first time it works, but after disconnecting you won't be able to reconnect until you have rebooted the Xoom!
That's absolutely annoying... And I think at least for root-users (like me) there should be another way.
I couldn't find any fix on the internet. But I think it should be possible to maybe reload the bluetooth kernel module or something. Maybe it's mobule bcm4329? Does anyone know how to do that (modprobe doesn't work).
Or are there any other ideas?
Greetz
McDV
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Click to collapse
My bluetooth connection wasnt reliable with bluetooth tethering either. I found though that when i did tether id only use the connection for like 30 minutes at most. If thats the case you should update to the latest version of wifi tethering from google v3.1 beta. Because when you tether wifi with that it tethers in infrastructure mode instead of ad-hoc that way your xoom can see it and connect with no problem. its completely reliable for me. And works flawlessly. ive had countless issues using bluetooth (Almost never was able to connect to network. only able to be paired)

if you do go that route. After connecting your xoom, make sure you have access control checked and that your device is in the list and enabled in wifi tethering then save.

Generally WiFi-Tether is no problem. I'm accessing the internet through my HTC with CM7 and Gingerbread offers WiFi-Hotspot by stock. But the point is, that this really drains your phone's battery if you just leave it connected.
Using Bluetooth-Tethering with the root-app Wireless Tether installed on my phone, the battery lasts much longer. Of course the connection is slower, but for mails etc. that doesn't matter. With Honeycomb 3.1 it worked great, but since 3.2 it simply won't reconnect until you reboot... You can even unpair and repair the devices etc., it doesn't help. After rebooting the Xoom it connect like a charm...
I think there has to be a way to just restart the bluetooth-module or something... But I don't know how.

Hey guys,
is there no one out there, who can help? If you search the internet, you find a lot of people, who are having this problem - no one even has a workaround.
The fact is, during reboot all the services and kernel-modules are reloaded (of course). So if s.o. could just say which service/module is responsible for bluetooth-tethering and how to restart/reload it without a reboot, this could already be very helpful!

I have an idea!
OK, I'm a little stuck, but I've got new information.
Obviously it's a DHCP-issue. Seems like the DHCP-client on the Xoom doesn't pick up a new IP anymore... If you type netcfg in a terminal emulator, you'll find that.
With su dhcpcd you often can push it get an IP! Then, after that, you sometimes can connect several times without problems, but connecting to WiFi again can be problematic...
Any ideas? Is there another way to make the dhcp-client get an IP?
My idea is to set up a static IP for that interface bnep0, but I can't find the proper config-file... Can someone tell me how to set up a static IP only for that single interface?

i am running wireless tether 2.08 which has Bluetooth wifi built in and I also have the same issues. Hopefully someone will come up with a fix for this. I kind of prefer running my Evo with Bluetooth than wifi since it does not run hot

No one has found a fix, yet?

[All] PDA Net won't do downloads, anyone else?

While out and about, I have been bluetooth tethering using the Foxfi/PDA Net combo to stay connected while in 'pay for Wi-Fi' areas and as a passenger on trips. The one downside I can see is it says "No Internet Connection" and anything connected to the downloader program (browser downloads and store) will hold until I have Wi-Fi.
Anyone else try this? Anyone know if there is a fix, or if this is just how it is?
My details: Phone is Galaxy S II rooted with ICS, Tab was stock, now rooted with CWM.
Sent from my A700 using xda app-developers app

I've been using bluetooth tethering using same scenario (epic 4G though), and when connectivity breaks, I have to check PDA Net and reconnect at times.
Sometimes data will hang and disconnecting and reconnecting will cause data to flow again. Other times my phone has issues and I have to restart FoxFI/bluetooth on it.
I always thought it was my phone though.. phone does reboot at times too. Using wifi instead of bluetooth is more problematic - epic runs only wimax or wifi but not both, so tends to have issues there as a 1st gen phone.

rapatelrocky said:
I've been using bluetooth tethering using same scenario (epic 4G though), and when connectivity breaks, I have to check PDA Net and reconnect at times.
Sometimes data will hang and disconnecting and reconnecting will cause data to flow again. Other times my phone has issues and I have to restart FoxFI/bluetooth on it.
I always thought it was my phone though.. phone does reboot at times too. Using wifi instead of bluetooth is more problematic - epic runs only wimax or wifi but not both, so tends to have issues there as a 1st gen phone.
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As far as my connection between the tab and phone, it has been solid. I guess that could implicate the phone. I have found that the systems tie themselves together much better if you let each program turn on the BT for the devices.
I'm disappointed that I can't download files from the browser or update programs on the fly.

w/ bluetooth, it is using a proxy service, so only browsers can communicate. app store updates or other app communications won't work in BT mode.
wifi tethering is the non-proxy way to address that..

[Q] Can we use P920(H) as a modem for a 3G router?

Hello all. I've just purchased a 3G/WAN WI-FI router (TP-Link model TL-MR3420 - link to manufacturer's page). It has an USB port to connect a 3G/4G modem. I tried to connect my P920H (V28b stock ICS - XBSA large partitions) but the router doesn't recognise it. I tried to use an older 3G phone (Sony Ericsson W980) and it works like a charm. In both cases I configured the phones to USB tether with their own configuration options.
Anyone managed to make this work? I believe the router lacks a driver, but I've found no driver for any phone on the manufacturer's page, although I works with the Walkman phone.
Edit: I forgot to mention that all tethering features on my phone works fine. I can turn on my hotspot and I can plug it to a PC's USB port and act like a modem. I just can't do it with my router.
Why I want to do this: Most of you who have nice broadband access may be wondering why I want to use my phone to provide Internet access to my router. Here's why: In the region I live, broadband access is a joke. A miserable 1Mbps insufficcient to watch even the lamest youtube video. But it has no limitations, so it is good for TV upgrades and other connected devices to do their maintenance.
On the other hand, my phone provider has a wonderful coverage around my house, sustaining an average of 3Mbps, reaching 10Mbps late at night. So, when I want a quicker net, like to watch Internet movies or download large files, I used to turn off my router and turn on the phone's hotspot. But even setting its SSID and password identical to the ones on the router, it takes some tweaking on the devices for them to reconnect. It was a nuisance.
With this 3G router, all I would have to do is connect the phone to it and it would switch from WAN to 3G. All I need is a driver that would make it recognize the phone and use it as a modem.

I messed with wifi tethering a bit a while back. Couldn't get it to work. My other phone sees it as a wifi point but won't connect. Something to do with LG not liking tethering I heard. I saw this mod that fixes tethering for some devices but never tried it ( I don't really need tethering). I am curious if it fixes it:
http://forum.xda-developers.com/showthread.php?p=37062006

drastic00 said:
I messed with wifi tethering a bit a while back. Couldn't get it to work. My other phone sees it as a wifi point but won't connect. Something to do with LG not liking tethering I heard. I saw this mod that fixes tethering for some devices but never tried it ( I don't really need tethering). I am curious if it fixes it:
http://forum.xda-developers.com/showthread.php?p=37062006
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Hello drastic00!
Thank you for your suggestion. I understand that the mod you suggested can have nice effects on slow or even broken tethering.
The problem is that I haven't made myself clear on the first post. I can see it now and I'll edit it right away. The tethering feature on my phone works fine, both WI-FI and USB tethering works. What I need is a USB tethering that makes my router "think" that my phone is actually a 3G USB modem. When I use this feature on a PC, I have to install the drivers. The bad news is that I can't install these drivers on the router.

Okay. I figured if wifi tether isn't working then usb isn't either. So what firmware do you have on which it is working?
There was a small discussion on a thread a month or so ago; it wasn't working for the 4 or so people who posted then...I think we were all on ICS or higher, but not positive. That's when I tried to see if I could get wifi tether to work. I didn't try any usb tethering.
So I guess I am not understanding the advantage of plugging direct to the router. Why not plug the phone to pc (signal in) and the router to pc (signal out)? Because it would be easier to switch from the signal you normally use? This is a new one on me... I have no idea if an ethernet switch would be of use...2 signals in for the router to broadcast and choose which wifi signal on the client end (not sure if your router could do that, just grasping at straws, since I haven't tried anything like this).
It's weird other phones work though, so I am still curious if Crossbreeder mod would do anything. It seems the other phones have a piece of software the O3D does not. Unless the router has drivers installed for those devices by default, which I doubt; you didn't install anything for those to work, they worked out-of-the-box, so to speak, right?

Exactly. Both WIFI and USB tether always worked out of the box for me, with several ROMs, either stock and modded ROMs. Eventualy some modded ROMs did break tether, but usually broke many other things as well Probably too undervolt and/or too overclock among other things I don´t understand.
I remember that discussion about not working tether, but didn´t get involved. It never happened to me. I believe it is more a hardware issue. If it happened to me, the first thing I would do is install the original stock Froyo to be sure if tether didn´t work with the most original firmware.
As to why I want to put my O3D as the Internet provider for my network: I have several devices connected: 3 PCs, 2 Androids, 1 TV and 1 Blu-ray player. The last two are not too easy to make connect to a different WIFI net, even if they have the same SSID and passwords. I used to turn off the router and then turning on the phone´s hotspot. The problem is that almost always several of these devices didn´t realise the switch and kept trying to connect to the unavailable router. The same thing happend when switching from the phone to the router.
Also, I don´t want to buy a 3G modem, because the speed advantage (and low fees) are "connected" to my voice plan. The SIM card is my primary phone number So, I need it to be able to make and receive calls. If I purchase a new SIM card, I would have to cope with two bills. Again, no more advantages.
Breaking news: I just noticed that the Sony Ericsson Walkman phone I am using as a modem only gets 1Mbps download, exactly the speed my provider guarantees. My P920H can get more than 10 Mbps on times, but usually between 3 and 5 Mbps. I believe that V28b stock ICS somehow unlocks some sort of ISP speed limit. Now, more than ever I want to use my phone as a modem on my router.

Oneplus one: Connected but, no internet

Hello everybody,
I am using an oneplus one running cm-13.0-20160316-SNAPSHOT-ZNH0EAO1QB-bacon and the kernel provided by cyanogen, and I am using xposed. My wifi had been working fine all day but when I went to work and got back I had the following problems: It would connect just fine but there would be an exclamation mark besides the wifi-logo on the statusbar. And inside the wifi-settings there would be text under the wifi I was connected with, stating: Connected, but no internet. This is what I tried up untill now:
-Turning modem/router on and off
-"Rebooting" my TP-link modem using their website
-Switching to cm-nightlies
-Switched to an older lollipop backup
-After that I dirty-flashed the stable cm13 release without installing xposed
I heard some people on the internet saying that there could be a problem with my kernel, but I haven't tried anything with that yet. My worst fear is that it would be a hardware problem related to the fact that I led my phone fall about two months ago. My screen had to be replaced but the sim-tray is still broken. I still need to replace that. Also the grill that is on the top off the top bezel of the phone went off, I think that it's the mic for calls, but I don't know for sure. I am really anxious about this, please help me.
UPDATE;
This seems to be a problem related to my home wifi, because other wifi's work just fine. Too bad that my knowledge in this field is very lacking...

Did you finally find a solution? I have the same problem, only at home and only with my phone (no problem with my computer)...

go into you router settings and change your wireless setting to the following:
wireless channel - 10
wireless mode - 802.11 b/g/n
if the above wireless mode dont work, try the other modes. usually this is set at auto and may confuse wifi on phones

I'm having the exact same problem. WiFi at home works great with PC+Win10, but I can't manage to make it work on the OPO.
It says "connected with no internet" or "connected" but then I can't navigate, and also the device appear as not connected on the router admin page.
WiFi on the OPO works fine at work or other places. I really have no idea why this is happening. I'll try to flash an update.