After the changes. Yes, Android switch to 3G if can not obtain a default gateway (from DHCP or statically configured) in the Wi-Fi network. And then will use 3G for Internet and Wi-Fi for the local addresses.
Then, a easy way is to configure the WiFi interface with a static IP (like 192.168.0.1, same address range as the Wi-Fi network) and a mask (255.255.255.0), and leave the gateway and DNS fields empty. Then confirm if the route table has the 3G network as default gateway. Use the command netcfg in the ADB to see that (in Hex, the default gateway is all zeros) or use the busybox for Android which have the normal route command from Linux. Regards, Ricardo Silva On Mon, Mar 15, 2010 at 7:29 AM, Tanmay <[email protected]> wrote: > Hey, > Thanks for the reply. > You reckon I should have a look at the routing table before making > these changes or after? Yes, from the forums I have seen that Wi Fi is > the preferred link. However, I am not sure whether it switches to 3G > in case it cannot connect to the internet via the Wi-Fi network which > is connected, but is purely local and cannot take it to any website. > > Cheers > Tanmay > > On Mar 15, 1:38 pm, Ricardo Silva <[email protected]> wrote: > > Hi, > > > > See the route table, because the default route will be the WLAN, I think. > > Because is the normally the preferred network (changes to 3G). Otherwise, > it > > will work. > > > > Regards, > > Ricardo Silva > > > > > > > > On Sun, Mar 14, 2010 at 11:06 PM, Tanmay <[email protected]> wrote: > > > Hi, > > > This seems to be what I am looking for. However, just to confirm, I > > > will give a short description of what I am trying to do: > > > I am trying to use Wifi for an internal WLAN connection (which would > > > not be accessing the internet) , and a 3G network to give me access to > > > the internet at any time. > > > > > Hope I am going down the right track. I will try doing these changes > > > and seeing how it goes. > > > > > Please let me know if these are not required/ will not solve the > > > problem I described. > > > > > Thanks > > > > > 3, 2:35 am, Ricardo Silva <[email protected]> wrote: > > > > Hello, > > > > > > here is a solution (only for testing and research, not for product) > to > > > > have the cellular data andwifiat the same time. > > > > > > Warning: need root > > > > > > 1. pull build.prop from system > > > > > > adb pull /system/build.prop . > > > > > > 2. Change ro.built.type property: > > > > > > from: ro.built.type=userdebug (on ADP1) > > > > > > to: ro.built.type=eng > > > > > > 3. Add property: > > > > > > cm.test.mode=true > > > > > > 4. Remount system: > > > > > > adb root > > > > adb shell > > > > mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system > > > > exit > > > > > > 5. Push build.prop: > > > > > > adb push build.prop /system > > > > > > 6. reboot :) > > > > > > Some one knows if is possible to change the source code of the > > > > ConnecitivityService.java and push to Android system (without install > > > > a new image)? I think that is possible compiling a new core.jar > and/or > > > > ext.jar, correct? > > > > > > cya > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to > [email protected] > > > To unsubscribe from this group, send email to > > > [email protected]<android-developers%[email protected]><android-developers%2Bunsubs > [email protected]> > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
