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As I said I'm really sure APN is correct, I doublecheckt it a couple of times. I'm also sure it is not an APN problem because data IS working, but only with GPRS. Could try a different ROM, but I doubt it will help, I had this issue both with stock Gingerbread and leaked ICS.

Just got my Droid 4 and try to use it with GSM in Germany. I'm on the .212 leak. However, I have no HSPA/UMTS reception. Not even EDGE. Only GPRS works. I tried out everything, set it to WCDMA preferred, tried all the build.prop tweaks, nothing helped. Tried out a different SIM, and I'm sure my...

No, I don't own an xyboard. I asked because I considered to buy one, given it would work under GSM with a foreign SIM. But in the meantime, I chose to buy a Xoom 2.

Most likely, yes. However I didn't read a report so far, this is why I started this thread. I wonder what happens if a foreign SIM card is inserted. Does it ask for an unlock code?

It has GSM/HSPA support, Verizon just activated it by software update. http://www.verizonwireless.com/b2c/store/controller?item=phoneFirst&action=viewPhoneDetail&selectedPhoneId=5822

Dear xyboard owners, now that it is rooted (thanks a bunch, Dan!): I'd like to hear about succesful use with GSM/HSPA and foreign (non-Verizon) SIM card. If someone succesfully did it, please report here. Thanks! PS: I also would appreciate a dedicated xyboard / Xoom 2 section.

There are a lot of possible show stoppers. First, I don't think that this was an official VZW statement. And, even if they will make GSM/HSPA work, it's unclear if and how SIM unlocking will work. Let's see how it will work out with the xyboard tablets ...

He didn't describe the vulnerability. It's not very hard to find out the underlaying idea by just running motofail exploit and see what files had been altered. You need to be _very_ skilled to develop these kind of exploits. But it's funny to see that Guys like Dan will always find a way. Just...

And of course you can use it prepaid with Verizon. I do.

Engadget is referring to phonescoop.com, where it is stated a bit clearer: http://www.phonescoop.com/articles/article.php?a=9660 Maybe there is an easy explanation? The SIM card slot is used for LTE, and is currently blocked (by software) for GSM SIM card use, because Verizon has some issues in...

There is something odd with the GSM/UMTS bands. The band 900 is hardly present here in Europe, and for good reason neither D2G nor D3 supported it -- nobody missed it. But the 900/2100 combination is very common for European handsets. I rather think the GSM related specs are mistakingly listed...

It was posted here: http://forum.xda-developers.com/showpost.php?p=17088489&postcount=10

Yes, according to a leaked VZW document I saw at Engadget the D4 is definitely not a global phone. Glad to hear you keep your D3. :-)

I think the mount needs a username. Please add "-o username=guest" to your mount command.

I hope the D4 will have no global radio, so I will not be tempted. ;-)

Did you install the update? This bug was fixed with the update on D3.

OK, then it's most likely not an MTU problem. If you want, we can do a little bit more troubleshooting. I love to track down that kind of problems. :-) Is your busybox installed in /system/xbin? Please type the following commands and provide me with the output: /system/xbin/ifconfig...

I fear this tcp-mss is a dead end. A module xt_TCPMSS.ko is needed. I compiled and loaded it, however still doesn't work. I think it it's related to the fact that all stock iptables options are built in the kernel, no modules. However, I have another idea. Very simple, but could work -- tested...

I compiled cifs.ko, I can load it, but didn't test if it really works. Send me a PM with your email address, I will email it to you, so you can test.

What a pitty, either the stock iptables command doesn't support it or there is a module missing. That makes it much more difficult. I will try to check it out, but cannot promise you a timeline.

I confess, I'm a little bit surprised by your output. ifconfig seems to have worked, and there is a host route to your VPN server, which is good, too. However the default route didn't switch. Could you please try the following, as root on command line: route add -net 0.0.0.0/1 dev tun0 route...

OK, it seams my workaround doesn't work for you because your ifconfig and route parameters are pushed by the server. There is more investigation needed, either in a new build of the openvpn binary or another workaround. I'll have a closer look at it, but really cannot promise you a timeline.

You are obviously prompted for a Username. What happens when you type your username (and then password, I guess).

Regarding your first question, yes you have to, and this isn't your only mistake. You cannot just adopt my ifconfig and route settings. OK, how could we start? I fear you are using a server-pushed configuration and I further fear this will just not work with this "broken" openvpn binary. Could...

Did you read this: http://forum.xda-developers.com/showthread.php?t=1271536

As I said, it sounds like it COULD be an MTU problem. I asked you about the name of your pptp interface before. Try this (as root on command line): iptables -t mangle -A POSTROUTING -p tcp --tcp-flags SYN,RST SYN -o <YOUR_PPTP_DEVICE_NAME> -j TCPMSS --set-mss 1200

Cannot find it there on my D3. But I got it otherwise in the meantime. tun is included in stock kernel, no module needed. I'll try to compile cifs.ko when I'm back home.

Maybe an MTU problem. What's the name of the pptp interface?

How detailled do you need it? I can show you what I did, but you need some Linux / OpenVPN skills to alter it for your needs. Unfortunately, I currently don't have the time to write a failsave HowTo. But if you have further questions, feel free to ask. 1. remount /system read-write 2. mkdir -p...

Couldn't find.

Really? Did I miss something? Do you have a link?

tun/tap is built in D3 stock kernel, so you need no module tun.ko. Which OpenVPN Installer did you try? The app from the market? It worked fine for me, only shortcoming is the openvpn binary seems to have a bug on D3, the built-in route and ifconfig commands do not work. But no big deal for me...

I do not like the demanding attitude some people seem to have, so I'm not sure it's even worth to reply in this thread ... anyway ... Keep in mind it took a lot of time to have D3 even rooted, while Bionic users and devs just benefitted from the D3 root exploit.

There is a binary in the link YOU posted above, this binary works on D3. What's wrong with this? Frankly, I do not understand you. Maybe your real goal is to learn how to compile Android binaries, but then you give up way to early.

So just do it.. It's your phone. :-) I told you where you can get a bash binary. Or you could compile it, shouldn't be very hard. I just say I wouldn't, no way. You have no rescue CD. (OK, thanks to a few people we now can re-install the system -- most likely)

A very easy way to have bash is the app "Better Terminal Emulator Pro", it's included there. The app is not free, but worth the few bucks. I guess it would be quite easy to replace sh with the files included there, but I wouldn't recommend this. I change as little as possible of the system, and...

I have no idea. Most likely some bug, but I don't know why you are running into it while I don't. I wonder if the iptables line disappears when you stop tethering (mine does). I don't think it hurts if not. If yes you have to re-enter the iptables command after each tethering. You could write a...

I think this is at least one reason it doesnt work. Can you try this command (after establishing tethering): iptables -t nat -I POSTROUTING -o ppp0 -j MASQUERADE

So I got you right, from your laptop, DNS works but no ping? Is your phone rooted? If yes, open a shell (with Connectbot or so) and type "iptables -t nat --list". Do you see the line with MASQUERADE?

It works fine here in Germany, at least for me. I'm using stock tethering. I have no idea why it doesn't work for you. Does DNS and ping work? What output do you have with "ping google.de"?

Another question: Anybody who primarily uses the phone on GSM/UMTS applied this update? I hesitate, because I'm really happy with the stock GSM/UMTS performance and fear an update could worsen something here.

Maybe I'm stating the obvious, maybe this is interesting for some of you, I don't know. Another reason for me I wanted root was to restore my D2G Angry Birds scores on D3. I always believed this would require root. But it does not. I copied the data today and realized the files "highscores.lua"...

/etc/vold.fstab seems to be the right place to change it, like mentioned above. However I think the risks are little, I wouldn't be the first who tries out ... at least not before an SBF is available. And I cannot fully assess what it means for future updates, if and how it has to be undone...

First thanks, you are right, tun/tap is built-in. I wouldn't have expected this. Second, could you please point me to .config? I must be blind, I cannot find it. I see the strange behaviour as you. However it doesnt't bother me much, because I write a start script anyway. I can only imagine...

Stupid question: Where is Motorola's .config used for compiling D3 kernel?

You only need to be root to load kernel modules. It's not a new kernel.

I'm sorry, I do not even know what call control is. :-) I only need USSD to control my multi SIM. I know it was broken with D2G, that's why I was so surprised it works with D3.

Not a big problem, I'll do it later.

One of the top reasons I wished root was openvpn. Anybody knows about working binary and TUN/TAP driver for D3? If yes, it could save me time, if not I'll build it over the weekend. TIA.

At least for me, USSD codes work fine with D3 (in Germany).