issue with mobile data dropping out (airplane mode toggle needed) - Sony Xperia 5 II Questions & Answers

Hi, I had the issue of mobile data misbehaving - randomly stops being connected and airplane mode toggle was needed to bring it back to life. This is on LOS20, but as I googled the issue, i found people on different devices and OSes with same issue (Samsung, Fairphone, Xiaomi...)
The solution that I found and had helped me is:
under APN settings:
APN protocolIPv4/IPv6APN roaming ProtocolIPv4/IPv6
it was set on IPv4 only so I changed it to this above.
I'm aware that this is very ISP specific, in case your ISP does not use IPv6 IP address scheme it will not apply, but I'm posting it anyway as it might help someone out there, and I think providers are adopting ipv6 worldwide, I have no idea why wrong settings was pushed to my device...

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[Q] DNS/Network interface settings in WP7

Hi there,
I'm currently searching for a registry entry or hosts file on WP7. I know there are some registry keys for DNS on Windows Mobile 6.5, due to its support for multiple network devices (see http://msdn.microsoft.com/en-us/library/aa916390.aspx). But if I'm looking at my HD7 with Advancedexplorer, I couldn't find any of these keys.
Only interesting infos where in HKEY_LOCAL_MACHINE\Ident, but I'm aiming for the keys or file where WP7 will keep its setting it gets from DHCP while it is connected via WLAN.
AFAIK there is no possible way to manually edit the network settings, so I'll always have to use DHCP. Do someone of you know the location of this information?
Oh, I see my post was moved to Q&A? Thought it would be more a hacking/development problem to find the right file/registry key? Is it possible to move the post back to its original area?
Ok, after digging, I found finally the location for the Wifi Interface settings:
HKEY_LOCAL_MACHINE\Comm\BCMSDDHD1\Parms\Tcpip
I'm currently not connected to a Wlan, but will recheck at home if there is a value for DNS or device IP
Little Update: if the phone is connected to Wlan, you will get more options beginnen with DHCP I think. So its no problem to change the DNS, but it will only last until the phone reconnects. The values will be overwritten. If you enter a wrong non working DNS, the phone will resort to your providers DNS.

[Q] T-Mobile IPv6 Beta for Nexus S

Anyone try the IPv6 Beta for ICS Nexus S? They have IPv6 enabled on 3G now.
https://sites.google.com/site/tmoipv6/lg-mytouch
Didn't work for me. Lost data.
I set up the apn for it, still waiting on the confirmation from t-mobile saying they've provisioned my number for use of ipv6.
dls5375 said:
Didn't work for me. Lost data.
Click to expand...
Click to collapse
What did not work for you?
I read this review that it worked well. http://www.prolixium.com/mynews?id=963
Highlights were that users get public IPv6 addresses and inbound connections to the phone work
its not working for me either. ive been exchanging emails with a person from that tmobile beta program, and he has a theory why its not working for me, custom rom. im on cm9. cm9 might not include the correct RIL files. i will try with a stock rom later on.
elgato99 said:
What did not work for you?
I read this review that it worked well. http://www.prolixium.com/mynews?id=963
Highlights were that users get public IPv6 addresses and inbound connections to the phone work
Click to expand...
Click to collapse
I set it up the way the instructions said to, rebooted and lost my data connection. It came back when I restored default.
IPv6 works fine for me with the stock Nexus S IML74K firmware, both with the special beta APN and the standard epc.tmobile.com APN (which is IPv6-enabled in the Bay Area). I did some reading on the topic last night for a friend, and it does look like you need support from the cellular radio for IPv6 to work correctly (for Android, I assume that means both baseband and RIL).
Apart from just doing it, what are the advantages of doing it?
mobilehavoc said:
Apart from just doing it, what are the advantages of doing it?
Click to expand...
Click to collapse
Fair question.
To people with mobile phones, the benefits are real public IPv6 addresses that allow for the bidirection flow of traffic. Read -- inbound connections... can have a web server or ssh server on your phone... A phone now becomes a real node on the real Internet, not a "mobile web" experience. Actually, each mobile phone is assigned 2^64 IPv6 addresses... that is a codified standard (yes, there are a lot of IPv6 addresses, no i dont think this a bright, but it is not actually a problem). There is no NAT from IPv6 to IPv6 addresses. But, other than that, not a whole lot is different from a user perspective. One can wax poetic about re-establishment of the internet's end to end principle, or how IPv6 is going to help battery life... but it gets kinda hand wavy. This is why IPv6 has been around for 10+ years without much traction.
The real benefit i see is to the mobile network providers, or Internet in general. Mobile devices are growing at a very high rate and there is just not enough IPv4 addresses to go around. Internet wide, IPv4 is pretty much exhausted.
I thought this article had some interesting pointers http://tech.slashdot.org/story/12/01/13/2348206/ipv6-only-is-becoming-viable
And, Facebook, Google, Bing, Yahoo ... are all turning on IPv6 for good in June. On the Internet, IPv6 is a pretty big deal in terms of how data flows through the tubes.... But, ideally, plane old joes dont have to care about IPv6. It should just work.
Here is some info on the World IPv6 launch day http://www.worldipv6launch.org/
Thanks. I noticed on the site they say P2P services like Skype won't work with IPv6 and there's obviously going to be some compatibility issues. I'm excited to try it out but at the same time I don't want to break apps or functionality. Guessing by this fall people will adopting it more and there'll be less breaks.
Right, some technologies are going to evolve quicker than others. The slashdot article had a link to a list of apps that work and dont work, i think it said 85% work fine... but a few fail. In any event, for this beta, switching between the IPv4 APN and the IPv6 APN is pretty easy (3 taps). I think one of the goals is to create an early adopter critical mass to find the broken things, complain, and get them fixed.
Here is another interesting link about getting the apps cleaned up http://www.gossamer-threads.com/lists/nsp/ipv6/32908
And, if you really want to go deep, there is this code which fixes the broken apps by doing translation on the phone from IPv4 to IPv6
http://code.google.com/p/android-clat/
Works fine for me....CM9 Euroskank kang and the Trinity t132 kernel. The lack of mms support makes it a non daily use apn for me..(kids, grandparents, etc...lots o' pictures)...but otherwise...good to go here...
working here now too. cm9 kang and trinity t144. i did have to flash the newest radio then let it sit there for a bit before it connected to data for the first time. now it connects quick every time. ive found one problem though, it wont let my laptop get data while its tethered, even though the phone has a good data connection. as soon as i change my apn back to the original and let it connect, data starts flowing to my laptop again. will someone else try to tether. it connects fine, just no data flow.
I got it working with the browser but my signal bars never turn blue and Sync doesn't work at all along with most background sync apps. Seems odd. I'm on 4.0.2 stock. I switched back to iPV4 and everything works perfectly. At least I have it configured to try later on in the summer.
mobilehavoc said:
I got it working with the browser but my signal bars never turn blue and Sync doesn't work at all along with most background sync apps. Seems odd. I'm on 4.0.2 stock. I switched back to iPV4 and everything works perfectly. At least I have it configured to try later on in the summer.
Click to expand...
Click to collapse
syncs here just fine with blue bars.
simms22 said:
syncs here just fine with blue bars.
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Click to collapse
Which APN are you using? The website lists one and the email I got from T-Mobile listed a slightly different one?
I tried it again and it worked this time with the blue bars and sync using the scpcf000 APN. Wonder why it didn't work before? Wonder if different towers/regions have issues because I was travelling when it wasn't working. Who knows.
I would keep it but no MMS is a bummer - if there were some practical advantage to using IPV6 right now I'd stick with it but there doesn't seem to be. Yet.
mobilehavoc said:
Which APN are you using? The website lists one and the email I got from T-Mobile listed a slightly different one?
Click to expand...
Click to collapse
epc-scpcf000.t-mobile.com
simms22 said:
ive found one problem though, it wont let my laptop get data while its tethered, even though the phone has a good data connection. as soon as i change my apn back to the original and let it connect, data starts flowing to my laptop again. will someone else try to tether. it connects fine, just no data flow.
Click to expand...
Click to collapse
Yeah, no Internet connection on my laptop when I try to tether either. It looks like Android's tethering infrastructure isn't IPv6-aware yet -- the laptop isn't picking up an IPv6 address, and the phone doesn't have an IPv4 address, so it's not capable of routing IPv4 traffic to the Internet.
That said, even if Android were to grow IPv6-aware tethering, providing Internet access is going to be a problem. I can see four possible approaches:
(1) The phone assigns IPv4 addresses to tethered devices (as it does now), and implements NAT46 to translate that traffic into IPv6 traffic to send upstream. I don't know of any NAT46 implementations, though, never mind any ones suitable for a phone.
(2) The phone assigns IPv6 unique local addresses to tethered devices, and implements NAT66 to push that traffic upstream. (Basically, this is like the current tethering setup, except with IPv6 everywhere instead of IPv4.) Highly experimental NAT66 standards and implementations exist, but their very existence seems to be controversial (one of the original ideas behind IPv6 was to have enough address space to not have to use NAT in the first place).
(3) The cell provider assigns a /64 or larger block of globally-routable IPv6 addresses to the phone, and the phone assigns those addresses to tethered devices. (This is the approach fixed-line broadband providers are taking.) As far as I know, though, there isn't a standardized way to hand out prefixes (other than DHCPv6, which people don't seem to like either), and of course, this requires carrier involvement, with implications for everyone who wants to tether without a carrier-approved tethering plan.
(4) The cell provider assigns an IPv4 address (public or private) to the phone, and tethered clients use the existing IPv4 tethering infrastructure. This requires no changes on our end (it'd work right now on carriers that provide dual-stack access), but T-Mobile has apparently decided to assign IPv6 addresses only and use NAT64/DNS64 to provide access to the IPv4 Internet, so this won't work for us.
I found this article to be well written and informative for IPv6 on ICS http://www.androidpolice.com/2012/0...ere-is-what-it-all-means-and-yes-no-more-nat/
http://dan.drown.org/android/clat/
I tried this code out. It is pretty cool since it allows some additional functionality by doing a NAT from IPv4 to IPv6 locally on the phone. Skype and a few other apps that require IPv4 now work while they did not work before.

[Q] D6603 on Tmobile hotspot issue

I used to tether my nexus 5 to the wifi nexus 7 without issue. The new D6603 works exactly the same way. I can get the two devices to connect to each other, but data trickles through so slow that webpages time out. I know some small amount of data is getting through because from google I can get instant auto suggestions as I begin a search. But if I click on any of the links google brings up the webpage never loads.
I called Tmobile who's mostly useless. Unsupported device yadda yadda. They confirmed my tethering option is still active, but otherwise they aren't helping.
is there a setting or something I need to change? Anybody else have luck with this working, or experience the same issue?
Have you tried multiple locations? There might be wifi interference in your current spot
Yes
It seems like a repeat of the issue I had with T-mobile blocking tethered data when I first got a nexus 5. Apparently they added code to 4.4 to redirect tethered data to a different apn.
Double check your APN settings, try setting the APN protocol to IPv4/IPv6 if it's set to only IPv6
That fixed it! Thanks! It was set for IPv6 only.

Wifi Connection Problem

Hello All,
I am trying to connect to my work network with no luck! Prior to the one plus one I had a Nexus 5 that connected with no issues. This is what happens:
1. Choose connect (password is saved)
2.The text under the SSID goes from "connecting" back to "saved" in less than a second. The signal bars show 3 then drop to 1.
I've tried forgetting the network, flashing different ROM, kernel, modem with no luck.
Turned off "Avoid poor network connections" and "Wi-Fi optimization:
With the Wifi analyzer app the connection is steady around -60 to -50 dBm. If I try to connect using the wifi analyzer app it just stays on "Authenticating". I know the password is correct, I've re-entered it multiple times.
The wifi network is using the 2.5 ghz band, channel 1, and WPA authentication.
I haven't tried connecting with a static IP, however I might try this next.
Any ideas, this is driving me nuts! Plus all the iPhones around me get to brag!
Thanks in advanced.
I'm having the same problem, and it also seems to stumble connecting to data networks. I have been toggling airplane mode on/off and it then finds the wifi and data networks. This is annoying as hell, when it should auto find and lock any network it has remembered and passwords are correct.
Does anybody have a fix, or is there a radio that can be flashed to correct this?
Jimmy Rudedog said:
I'm having the same problem, and it also seems to stumble connecting to data networks. I have been toggling airplane mode on/off and it then finds the wifi and data networks. This is annoying as hell, when it should auto find and lock any network it has remembered and passwords are correct.
Does anybody have a fix, or is there a radio that can be flashed to correct this?
Click to expand...
Click to collapse
I'd love to hear any resolutions to this issue as well... I posted this in the oneplus forums recently:
"I am having this problem too with my mom and dad's OPO . But what's funny is that it doesn't happen to my OPO. This sort of rules out any WiFi/router/network issues. Is it possible that certain installed apps on their phones may render the wifi to be unstable (e.g. permission settings for these apps?) Any help from the community is appreciated, thanks... this is an annoying problem for them as it drains out their LTE data!"

MMS will not send/receive when connected to WIFI

Does anyone else have this issue?
I didn't have this issue until I did a factory reset yesterday. I have checked my data settings for my phone and the default messaging app and I do not see a setting that would be affecting me. MMS messages download immediately if I am on only a mobile network.
Checking different websites online led me to checking the APN settings for the T-Mobile network. I checked them against the settings that are provided on the T-Mobile website and I see that mine do not match completely. Mine differs from their site in 3 places:
I am missing the MMS Protocol field,
APN type is set to default,mms,supl
and my APN protocol is set to IPv6 instead of IPv4/IPv6
I'm a new user so it won't let me link to the support page but it is below:
HTML:
https://support.t-mobile.com/docs/DOC-30273
I tried manually creating an APN to match their website but I still cannot find the MMS Protocol field. Also, it switches back to the original APN whenever I check back.
I'm not sure if anyone else has had this issue but I think my next step is to call their customer service and see if they can reset something on their end.

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