note 2 : Most of the Chinese clone phone the 1st Sim which is a 3G will work perfectly. Only the problem happens when we insert the second sim. If you check you can see the IMEI of 1st sim will start with 35xxxxx and the 2nd will start with 88xxxxxxxx. That is why the second sim is not able to register to the network, because its not in international formatted IMEI. So usually we need to change the IMEI of phone 2. There is no illegal purpose on this.
note 3 : I didn't tried method 2.
Method1
I read another method but this is also worked for mine.1. First download mobileuncle tools from google play.
2. Open mobileuncle and enter Engineer mode(MTK).
3. Under telephony title you'll see GPRS. enter that.
4. You'll see imei number there. As sim1 and sim2.
5. Write the imei as you want and touch write imei.
Geçersiz: Invalid in Turkish.
Method 2:
1. Open Mobileuncle tools.
2- Select Engineer mode[MTK]
3- Go to CDS information
4- Select Radio Information
Here you can see Phone1 and Phone2,
5-Select which you want to change imei.
Here you can
see a command line with “AT+”. If you want to change sim2 just add this command to it
AT+EGMR=1,10,”15
digit YOUR NEW IMEI NO”
And press “send
at command” button.
[ if you want to change the the phone 1 IMEI AT+EGMR=1,7,”NEW IMEI NO”]
