The modules has still a few problems:

• required modify init.rc add: on device-added-/dev/ttyUSB0 chmod 0777 /dev/ttyUSB0 on device-added-/dev/ttyUSB1 chmod 0777 /dev/ttyUSB1 on device-added-/dev/ttyUSB2 chmod 0777 /dev/ttyUSB2 on device-added-/dev/ttyUSB3 chmod 0777 /dev/ttyUSB3 on device-added-/dev/ttyUSB4 chmod 0777 /dev/ttyUSB4 on device-added-/dev/ttyUSB5 chmod 0777 /dev/ttyUSB5

  on boot service ril-daemon /system/bin/rild socket rild stream 660 root radio socket rild-debug stream 660 radio system user root group radio cache inet misc audio

• Edit system/build.prop ,add:

  for 3g

  rild.libpath=/system/lib/libhuaweigeneric-ril.so rild.libargs=-d /dev/ttyUSB2 -v /dev/ttyUSB1 keyguard.no_require_sim=1

pppd must be suid ROOT, and kernel must include ppp support compiled in
/system/etc/ppp/ip-up and also /system/etc/ppp/ip-down must also be suid ROOT

You also need the following files in /system/etc/ppp

/system/etc/ppp/ip-up:

#!/system/bin/sh case $1 in ppp1) /android/bin/iptables --flush; /android/bin/iptables --table nat --flush; /android/bin/iptables --delete-chain; /android/bin/iptables --table nat --append POSTROUTING --out-interface ppp0 -j MASQUERADE; /android/bin/iptables --append FORWARD --in-interface ppp1 -j ACCEPT; echo 0 > /proc/sys/net/ipv4/ip_forward; echo 1 > /proc/sys/net/ipv4/ip_forward; ;; ppp0) /system/bin/setprop "net.interfaces.defaultroute" "$LINKNAME"; ;; esac

/system/bin/setprop "net.$LINKNAME.dns1" "$DNS1" /system/bin/setprop "net.$LINKNAME.dns2" "$DNS2" /system/bin/setprop "net.$LINKNAME.local-ip" "$IPLOCAL" /system/bin/setprop "net.$LINKNAME.remote-ip" "$IPREMOTE" /system/bin/setprop "net.$LINKNAME.gw" "$IPREMOTE" /system/bin/setprop "net.$LINKNAME.if" "$IFNAME"

/system/etc/ppp/ip-down:

#!/system/bin/sh case $1 in ppp1) echo 0 > /proc/sys/net/ipv4/ip_forward; ;; esac

/system/bin/setprop "net.$LINKNAME.dns1" "" /system/bin/setprop "net.$LINKNAME.dns2" "" /system/bin/setprop "net.$LINKNAME.local-ip" "" /system/bin/setprop "net.$LINKNAME.remote-ip" "" /system/bin/setprop "net.$LINKNAME.gw" "" /system/bin/setprop "net.$LINKNAME.if" ""