UNLOCK VODAFONE k3570-z MODEM

Here is an EXCLUSIVE tutorial to use any sim card Vodafone's k3570-z usb modem (METHOD 1)

It is manufactured by Zte Corporation, China. k3570-z supports 2g,EDGE,3G upto 3.6 mbps and it has no memory card slot.

Using this trick you can use other sim network's sim cards on this modem. 

Basically, when you insert another operators sim in Vodafone k3570-z it does not asks you for the unlock code because I think that it is pre-unlocked.Because of the Vodafone's dashboard does not recognize aunauthorized or other networks sims card and it looks like this if you inserts other sim:

For this trick you does not need any special software nor any unlock codes. so here is the trick:

[NOTE: I am not responsible for any kind of damage of your modem]

1. First your default SIM in your modem and once connect it to internet and disconnect it.

     (make sure that in n/w connections, there is an internet profile named "VODAFONE MOBILE BROADBAND" is created).

2. now remove your modem insert other operator's SIM like, Airtel, Tata Docomo, Reliance,etc.

    and again attach modem to pc. Your vodafone dashboard will show message the as above image.

3. Now go to CONTROL PANEL>PHONE & MODEM OPTION>MODEMS tab.

4. Now double click on ZTE Proprietary USB MODEM > ADVANCED tab.

5. And now Write the AT command in 'Extra Initialization Commands' and click OK and close it.

    Here are the some AT commands:

for Vodafone It is:

AT+CGDCONT=2,"IP","www","0.0.0.0",0,1

for Docomo:

AT+CGDCONT=1,"IP","TATA.DOCOMO.INTERNET"

for idea:

AT+CGDCONT=1,"IP","internet"

for Airtel:

AT+CGDCONT=1,"IP","airtelgprs.com" 

for Reliance:

AT+CGDCONT=1,"IP","rcomnet" 

6. Now click on n/w connections icon and double click on 'Vodafone Mobile Broadband' now it will connect with  your sim card and ENJOY.

I will later upload screenshots......

Disadvantage of this trick is that you can not make SMS's from your modem using other sim cards.