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VPN L2TP connection issues reboot

Hello all,
I bought my Nexus 7 in Hong Kong. Now I'm back in Mainland China and faced a big problem with the VPN L2TP connection on my N7. After the VPN tunnel is established my N7 reboots after an undefined time. I'm able to download and use it...but then the device freezes and reboots. Staying in China without VPN (PPTP is mostly slowly and blocked ) is a mess. Somebody has an idea or faced the same ?
On my Nexus phone I've no problems...
Sent from my Galaxy Nexus using xda app-developers app

I have EXACTLY the same problem! I log in to my VPN on the Nexus 7, then - at any moment either immeidately after or sometimes 20-30 minutes after - the thing just reboots itself randomly. Does NOT happen when VPN is not connected.
Talk about annoying!

Ok... I'm back in China...so...VPN must have....I've tested several things...WPA2,WPA and WEP...it doesn't matter...device freezes and reboots...that's absolutely a bug in the N7... somebody knows how to send that to Google devs?
Sent from my Nexus 7 using xda app-developers app

Danjunior78 said:
Ok... I'm back in China...so...VPN must have....I've tested several things...WPA2,WPA and WEP...it doesn't matter...device freezes and reboots...that's absolutely a bug in the N7... somebody knows how to send that to Google devs?
Sent from my Nexus 7 using xda app-developers app
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I just wanted to comment that I get the same exact reboot issue, although mine could be attributed to the ROM I'm using which is Bugless Beast.
I use L2TP connections too, but mine will reboot immediately after opening chrome, or other programs which use the Internet. Not sure what to do

Danjunior78 said:
Ok... I'm back in China...so...VPN must have....I've tested several things...WPA2,WPA and WEP...it doesn't matter...device freezes and reboots...that's absolutely a bug in the N7... somebody knows how to send that to Google devs?
Sent from my Nexus 7 using xda app-developers app
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LaKraven said:
I have EXACTLY the same problem! I log in to my VPN on the Nexus 7, then - at any moment either immeidately after or sometimes 20-30 minutes after - the thing just reboots itself randomly. Does NOT happen when VPN is not connected.
Talk about annoying!
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Click to collapse
I am also in China, and this problem really bothered me
---------- Post added at 01:08 PM ---------- Previous post was at 12:52 PM ----------
whyes said:
I am also in China, and this problem really bothered me
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now i am using ipsec vpn, it's ok now :cyclops:

Sure... possible if you root your device...I've solved it flashing my rooter... running there an OpenVPN client...still 4.2 got that bug...painfully enough for Google... other OEM's don't have such struggling behaviour... Regards from Changchun...with the smallest bandwith of China....really annoying...
Sent from my Nexus 7 using xda app-developers app

similar but
On my device, I connect to VPN at home and at work. I have never had the restart bug when I connect at work. It always happens when I'm at home. So this is a very specific bug for a certain kind of connection and not just VPN WiFi in general. Good luck everyone I hope we figure this out.

Which vpns do you use here in China?
I am having trouble setting up Witopia on my nexus 7. I have it on my computer and it doesn't work very well and I have it on my ipad but no luck on the nexus. Why are the android settings far less user friendly than apple's?
What vpns are you guys using? Are any of them free? I want to change the region on my nexus to download apps from the US.

nikatnight said:
I am having trouble setting up Witopia on my nexus 7. I have it on my computer and it doesn't work very well and I have it on my ipad but no luck on the nexus. Why are the android settings far less user friendly than apple's?
What vpns are you guys using? Are any of them free? I want to change the region on my nexus to download apps from the US.
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Click to collapse
Hi...they are User friendly...but there are with some VPN Providers telegram issues since Android 4. Some are able to handle it, some not. I´m using Astrill. It´s cheap, fast enough, great support and a lot of server locations. Sorry, i wasn´t able to get any VPN connection without reboot of my Nexus 7. My solution was to invest some money in a new router, which i flashed DDWRT and put from Astrill the OpenVPN solution on it.

AW: VPN L2TP connection issues reboot
Hi all,
I was Bord the last days...and...i've flashed my Android devices with custom roms....my Nexus 7 has no VPN issues using Paranoid Android Rom...now i'm pretty sure that anything in the stock Rom is a mess....
Sent from my Nexus 7 using xda app-developers app

I have the exact same problem. Gonna have to flash a custom ROM. I am using 4.2.2 on a nexus 7

Anyone else experiencing slow download speeds?

So me and both of my friend had trouble loading a YouTube video, it was so slow and kept pausing. We both have the Nexus 4 and were on wifi by the way. So we tried using another friends S III and it loaded the video fine. When I ran a side by side speed test he got a 19 mbs download and I could only pull 2. Is this happening to anyone else?
Edit: we were on the same wifi
Sent from my Nexus 4 using xda app-developers app

Did you try turning off Wi-Fi optimization in settings?
Sent from my Nexus 4 using Tapatalk 2

outz said:
Did you try turning off Wi-Fi optimization in settings?
Sent from my Nexus 4 using Tapatalk 2
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No I kept it on but earlier in the day I was getting perfectly good speeds. Like sometimes my speed is fine and then sometimes it's slow.
Sent from my Nexus 4 using xda app-developers app

Ngo93 said:
So me and both of my friend had trouble loading a YouTube video, it was so slow and kept pausing. We both have the Nexus 4 and were on wifi by the way. So we tried using another friends S III and it loaded the video fine. When I ran a side by side speed test he got a 19 mbs download and I could only pull 2. Is this happening to anyone else?
Sent from my Nexus 4 using xda app-developers app
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Me too I just switched from vzw iPhone 5 and I have T-Mobile now.... I cant even download my apps from the market and I have to get hot spot from my girls i5
Sent from my Nexus 4 using xda premium

It obviously shouldn't be that way. Since this is wifi, try a mix of different networks. Lord knows, this wouldn't be the first phone with wifi issues with certain network security types right out of the gate (or wifi problems in general).
Sent from my cm_tenderloin using xda app-developers app

Ajfink said:
It obviously shouldn't be that way. Since this is wifi, try a mix of different networks. Lord knows, this wouldn't be the first phone with wifi issues with certain network security types right out of the gate (or wifi problems in general).
Sent from my cm_tenderloin using xda app-developers app
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Yeah I switched to another network and it went fast again. Was just wondering if anyone knew the cause of the sudden slowdowns though.
Sent from my Nexus 4 using xda app-developers app

On T Mo, I have had it flip from H+ to 3G but all in all in my speed test without changing anything APN wise I consistently get around 16mbps down. You tube and such flies (HQ) and even on wifi on Xfinitys basic package on a G band router I have no issues at all with wifi and YouTube in HD. Sorry, I'm no help but I haven't had an issue.

Oh my bad, I forgot to mentioned that we were on the same WiFi.
Sent from my Nexus 4 using xda app-developers app

Yeah I have that problem on my WiFi as wells slow speeds. Have to switch to hspa to download apps, rediculous
Sent from my Nexus 4 using Tapatalk 2

I've also had this on WIFI, thought it was my router, may have to play with router settings a bit to see what's happening.
Its only really noticeable when I try to play a youtube video, although had it other times too.
Also switching to mobile data for youtube as its faster!

phil001 said:
I've also had this on WIFI, thought it was my router, may have to play with router settings a bit to see what's happening.
Its only really noticeable when I try to play a youtube video, although had it other times too.
Update!!! I figured it out its googles servers they are overloaded this is what makes me think that. Play store loads slow as well as YouTube! Not our phones!
Also switching to mobile data for youtube as its faster!
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I think something is wrong with our WiFi radios. Might need an update. Its happening to a lot of us.
Sent from my Nexus 4 using Tapatalk 2

I'm seeing this issue as well and it's occurring on 2 completely different wireless networks: at home and in the office. I've tried tweaking wifi settings on both my Nexus 4 and on my router at home but nothing has fixed the slow wifi speeds. And none of my other Android devices are experiencing this issue (Nexus 7, Galaxy Nexus, Motorola Xoom).
I called Google Play support just now and they didn't have any info to offer on whether or not this is a known issue, they just asked if I'd tried restarting my phone and/or done a factory reset. After I verified that I'd already done both things and neither action resolved the issue they said I could exchange the phone, so that's what I decided to do.
If this problem is indeed being caused by faulty hardware in the phone, hopefully the replacement phone will be in a better state and work properly. <crosses fingers>

It's the router that needs to be updated, not the phones. Obviously if you're is broken though that is irrelevant.
Can't say why that is, but I read a thread awhile back detailing it, I will try and locate it.
http://forum.xda-developers.com/showpost.php?p=34260682&postcount=25

Seemonsters said:
It's the router that needs to be updated, not the phones. Obviously if you're is broken though that is irrelevant.
Can't say why that is, but I read a thread awhile back detailing it, I will try and locate it.
http://forum.xda-developers.com/showpost.php?p=34260682&postcount=25
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That makes no sense seeing as everything else works fine on my Wi-Fi
Sent from my Nexus 4 using Tapatalk 2

i did the same thing. as it was mentioned, turned on and off "data" " data roaming" and "2g" after that Kaboom! went from 3-7mpbs to 12-15mpbs

remydlc said:
i did the same thing. as it was mentioned, turned on and off "data" " data roaming" and "2g" after that Kaboom! went from 3-7mpbs to 12-15mpbs
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So you just unchecked and checked?
Sent from my Nexus 4 using Tapatalk 2

remydlc said:
i did the same thing. as it was mentioned, turned on and off "data" " data roaming" and "2g" after that Kaboom! went from 3-7mpbs to 12-15mpbs
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horr1blek1tten said:
So you just unchecked and checked?
Sent from my Nexus 4 using Tapatalk 2
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I think remydlc is referring to download speed over a cellular data connection, and not WiFi (which is what this thread's topic is really about). At least that's the way I read it...

Is this related... I have noticed compared to my old S2 and iPad my nexus has fewer bars and the signal can drop if held in the left hand. The connection speed can be much less too.
Not good.

could it possibly be trying multiple networks? I have a dual band 5 and 2.4 but they have different ssids - my initial set up was to the 5 ghz but when the google restore happened it populated my 2.4 ssid and pw. I found I had to "forget" all my configured access points and just set up my 5 ghz one and everything was smoking

glenroebuck said:
could it possibly be trying multiple networks? I have a dual band 5 and 2.4 but they have different ssids - my initial set up was to the 5 ghz but when the google restore happened it populated my 2.4 ssid and pw. I found I had to "forget" all my configured access points and just set up my 5 ghz one and everything was smoking
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I don't think this is causing the issue (at least for my phone). I've had the slow WiFi speeds on 2 completely different networks, with one being the campus network of the university I work at. Also, I've tried using my Nexus 4 on 2 different routers at home, one of which can do both 2.4/5.0 ghz and when I tried manually setting the phone to just use either the 2.4 ghz or the 5.0 ghz network it made no difference; the phone's WiFi speed was still very slow.
I'm feeling pretty convinced at this point that it's something faulty with the phone. I pretty much tore down and rebuilt my home network yesterday and tried all different types of settings to test the result on my Nexus 4 and nothing made the WiFi speed any better on the phone.

Wi-Fi connectivity issues with 4.2.1

My Wi-Fi connectivity was rock solid on 4.2, but since applying the OTA I'm getting frequent data drops. Still shows me as connected to my router, but get no data. A quick Wi-Fi toggle fixes the problem each time. Anybody else seeing this?

dberthia said:
My Wi-Fi connectivity was rock solid on 4.2, but since applying the OTA I'm getting frequent data drops. Still shows me as connected to my router, but get no data. A quick Wi-Fi toggle fixes the problem each time. Anybody else seeing this?
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Exact same thing here!

I have had this issue with nexus 10 since I got it. My only complaint
Sent from my EVO using Tapatalk 2

GAH1068 said:
I have had this issue with nexus 10 since I got it. My only complaint
Sent from my EVO using Tapatalk 2
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Does anyone else have this issue ?
Connectivity is really key for this device and if this is common then I would likely not update.

upsetting to hear this, one of the big reasons I opted for this over some other 10.1in tablets was the MIMO dual band wireless. My Viewsonic g-tablet has horrible wifi connectivity and it makes watching youtube horrible. I couldnt imagine having to deal with it on my nexus 10 when it comes in the mail.

The first thing to check is always to set a static IP and see if the issue is resolved.

Just got my replacement today. Before the 4.2 and 4.2.1 updates, WiFi was solid no drops and full bars. After updates, pretty finicky drops quite a bit:/ hope the next update addresses this.
And yes sometimes it will show bars but no data. Especially when I start using 5ghz instead of 2.4ghz.
Sent from my Nexus 10 using Tapatalk HD

After a few hours with no drops, I may have discovered a fix for my situation. I changed my access point from WPA (TKIP) to WPA2 (AES), and for the last 4 hours I haven't had a single drop. Prior to this, it'd drop every few minutes. Hopefully this holds up.

I've been having connectivity issues as well. I'll have my Nexus 7 and 10 in the same spot and the N7 will hold a solid connection and the N10 will drop and reconnect ad nauseam

My Wifi is perfect.

I also have this problem , any one found a fix?
Sent from my Nexus 10 using Tapatalk 2

TomAshcroft said:
I also have this problem , any one found a fix?
Sent from my Nexus 10 using Tapatalk 2
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Try using a static ip.
Sent from my SCH-I535

jhoutz said:
Try using a static ip.
Sent from my SCH-I535
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Have tried this already.
Sent from my Nexus 10 using Tapatalk 2

TomAshcroft said:
Have tried this already.
Sent from my Nexus 10 using Tapatalk 2
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When I had this problem I found that my google account had saved my connection settings. It was trying to use the same static ip as my phone. Went in and changed it and everything is fine.
Hopefully this can help.
Sent from my SCH-I535

jhoutz said:
When I had this problem I found that my google account had saved my connection settings. It was trying to use the same static ip as my phone. Went in and changed it and everything is fine.
Hopefully this can help.
Sent from my SCH-I535
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Where did you find this connection information?

dberthia said:
Where did you find this connection information?
Click to expand...
Click to collapse
Long press on the network you want to modify
Sent from my Nexus 10 using xda app-developers app

Anyone else having wifi connection issues with 4.2.1?

I only got my n7 a couple of weeks ago and almost immediately updated to 4.2. I didn't notice any issues. Immediately after the 4.2.1 update I keep getting random connection issues. I have to turn wifi off and on to resolve it.
Sent from my Nexus 7 using xda app-developers app

gk1984 said:
I only got my n7 a couple of weeks ago and almost immediately updated to 4.2. I didn't notice any issues. Immediately after the 4.2.1 update I keep getting random connection issues. I have to turn wifi off and on to resolve it.
Sent from my Nexus 7 using xda app-developers app
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I had the issue.. 32gb version in the US with the sep build. I actually had it prior to to 4.2.1. I ended up going into advanced properties and changing wifi to always on. Drains battery, but fewer need to turn wifi off and back on.
Tony

Yes. I have WiFi disconnects and random reboots since the new update .
Sent from my Nexus 7 using Tapatalk 2

WiFi Fixer
I use WiFi Fixer downloaded from Google Play. When the connection is dropped it automatically reconnects after a second or two.

Same on my 7 WiFi stops working at random times turn WiFi off and on fixes it, only started after 4.2.1 update
Sent from my Nexus 7 using XDA Premium HD app

Thanks for confirming everyone. I have wifi always on and still have the issue. Hopefully it gets fixed...
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Same issue after 4.2.1
Sent from my Nexus 7 using xda app-developers app

How do we make Google aware of these bugs?
Sent from my Nexus 7 using xda app-developers app

My WiFi is always on and tethered to my evo3d at least 8 hours a day. Not a single problem under 4.2.1.
Sent from my Nexus 7 using xda premium

Just to clarify, i'm having this problem 100% stock. Not rooted what so ever. Roms/kernels could have this eliminated. But I wouldn't know.
Sent from my Evo 3D CDMA using xda app-developers app

I rolled back too 4.1.1 then updated 4.1.2/4.2/4.2.1 now WiFi work's again no more disconnect....
Sent from my Nexus 7 using XDA Premium HD app

No wifi internet / e-mail / notifications after 4.2.1
I am having a similar issue. Stock Nexus 7, never rooted, installed the 4.2.1 update when it was pushed. Since then I can connect to wifi connections but there is no internet access. While the icon in the upper right has small flashing arrow like data is being sent back and forth, the icon remains gray and no internet-requiring services on the tablet work. I've tried everything that I (and Google Play and Asus support) could think of with no luck.
The only thing they could come up with at the end was to restore the tablet to factory settings. Unfortunately I have application data that I need to back up that I can't access by accessing the internal storage using my laptop (I'm stock, remember?).
So I'm between a rock and a hard place here. Anyone have any suggestions? It was very frustrating when the Asus representative suggested I use the built-in backup and restore feature:
Me: "That requires internet access to work right?
Asus representative: "Oh....right..."

My Wi-Fi on both my Nexus 7's is very slow. They stay connected fine but I'm getting about 150kbps download speeds. I factory reset one of them to no prevail. Anyone have any insight on this or heard of others with this issue? All my other devices work fine on the same Wi-Fi connection and I tried turning everything else off so just the Nexi where connected to see if the speeds are faster, but they aren't. I'm stock on both devices and both are the 16gb version, one older than the other.
Sent from my SPH-L710 using Tapatalk 2

GiantJay said:
My Wi-Fi on both my Nexus 7's is very slow. They stay connected fine but I'm getting about 150kbps download speeds. I factory reset one of them to no prevail. Anyone have any insight on this or heard of others with this issue? All my other devices work fine on the same Wi-Fi connection and I tried turning everything else off so just the Nexi where connected to see if the speeds are faster, but they aren't. I'm stock on both devices and both are the 16gb version, one older than the other.
Sent from my SPH-L710 using Tapatalk 2
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Known issue. I logged a bug with Google and there's actually several open bugs reporting wifi issues. So far, none of the bugs are being picked up by google officially.

+1
Veeery Slow

quincyquinn said:
I rolled back too 4.1.1 then updated 4.1.2/4.2/4.2.1 now WiFi work's again no more disconnect....
Sent from my Nexus 7 using XDA Premium HD app
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I've tried this same thing, and as soon as I installed 4.2, WiFi went to sh**. Completely stock.
So turning wifi off then on seems to be the generally excepted quick fix?
Sent from my Nexus 7 using xda premium

r0zj0k3r said:
I've tried this same thing, and as soon as I installed 4.2, WiFi went to sh**. Completely stock.
So turning wifi off then on seems to be the generally excepted quick fix?
Sent from my Nexus 7 using xda premium
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Or use Static IPs. That solved it for me. I had to ask my company to provide a reservation for my MAC Address. It's like back in the 90s when Wifi started coming out using the BellLabs/Lucent chipset.

nexus 4 not finding my router

just got my nexus 4 few days ago, but it takes long time for my router to show up on my phone, my wife has an old nexus 7 and it connects right away, basically nexus 4 and nexus 7 has the same software so why mine is acting up? i also have a htc one x with the same problem but only on jeall bean roms, ics roms are okay, it connects right away. any ideas??
fix the problem from here, but it is not 100% http://forum.xda-developers.com/showthread.php?t=2300873

claudiuslu2011 said:
just got my nexus 4 few days ago, but it takes long time for my router to show up on my phone, my wife has an old nexus 7 and it connects right away, basically nexus 4 and nexus 7 has the same software so why mine is acting up? i also have a htc one x with the same problem but only on jeall bean roms, ics roms are okay, it connects right away. any ideas??
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Click to collapse
phones have shorter wifi range than tablets

Is your router running on 5GHz mode only, some people have issues with connecting to it.

eksasol said:
Is your router running on 5GHz mode only, some people have issues with connecting to it.
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no, auto mode. my wife's nexus 7 has no problem. maybe problem with my phone.

Have you been able to connect other routers, or try setting up a WiFi tether from another device and connect to it?

yeah it connects to other routers fine and tether to my wife's phone too, just not the router at home, but found a fix for it and working fine now.
still need to fix the problem on my htc one x.

What was your fix. If you let everyone know your fix it could help someone else in the future.
Sent from my Nexus 4 using xda app-developers app

http://forum.xda-developers.com/showthread.php?t=2300873
doesnt work 100%, but it is close enough.

You can try to change your routers wifi channels and reconnect it might help.
Sent from my Nexus 4 using Tapatalk 4

Tricepz said:
You can try to change your routers wifi channels and reconnect it might help.
Sent from my Nexus 4 using Tapatalk 4
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i did that and i also change the security mode from wpa/wpa2/wep and still not working. also change beacon buffer rate.