Enabling 3G on SIM 2
1.Open the provided Dual sim control app and go to Data Connection tab
2.Press on "Set SIM 2 as 3G"
it'll now set your SIM 2 in "WCDMA Preferred" mode .Enjoy 3G on SIM 2.:good:
If you want to set as "WCDMA Only" mode ,follow step 3,4&5
3.go to settings/about phone and tap 4 or 5 times on Internal Memory , it'll lead you to testing mode
4.From Testing , press Phone information2
5.You'll see "WCDMA Preferred" press it and change it to "WCDMA Only"
Enjoy 3G on SIM 2 and press thanks to US
some screenshots are provided below