Thanks.
The camera is available (green).
If I try to connect, after 30 seconds a message appears on the smartphone display :INTERNAL ERROR, RETRY.
If I retry the same message appears . This happens continously. Sometime another message appears: "Time out , please reconnect".
If I use local router wi-fi instead of 3G connections , it works on the smartphone.
If I use a PC with an external 3G modem, I can see the picture on the PC dispaly.The 3G NETWORK IS THE SAME. The router I use is not an ADSL but a 3G.