1. Please confirm that the SIM card you are currently using is Unicom 3G card .
2. Under the Standby page, click "Application".
3. Click "Set".
4. Click "Connect".
5. Click on "More Networks".
6. Click on "Mobile network".
7. Click on "Network Mode".
8. Click "WCDMA only".
Note: If your current location does not cover the Unicom 3G signal or the current Unicom 3G signal is not good, then there may be no network service after switching, such as the choice of GSM/WCDMA (automatic mode) phone will be based on your current location of the network signal strength to choose Network mode, There is no guarantee that you will always use the 3G network.
Tips: Samsung Note3 N9006 Mobile phone 3G mode is not called the 3G and called WCDMA this is actually Unicom 3G Oh, we just open this can realize Unicom 3G Internet, and of course, if you are other operators we can option wcdma/ GSM test to see if it is ok oh.