Connecting to 3G enables you to work or enjoy entertainment anytime, anywhere.
Here's how to set up 3G on your Huawei Y3 2017:
Step 1: Turn on 'Mobile Data'.

Turn on 'Mobile Data'.
If your device still can't connect to the network, it may be because it lacks APN configuration. You can proceed as follows:
Step 2: Go to Settings > More > Mobile Networks.

Step 3: Select 'Access Point Name (APN)'.

Select 'Access Point Name (APN)'.
Step 4: Choose 'New APN'.

Choose 'New APN'.
Step 5: Enter APN settings.

Enter APN settings.
Suggestion: Information on APN, access point name, and 3G connection passwords for Vietnamese network providers.
VinaPhoneAPN: m3-worldUsername: mmsPassword: mms
Mobifone:APN: m-wapUsername: mmsPassword: mms
Viettel:APN: v-internetUsername: (empty)Password: (leave blank)
VietnamMobile:APN: InternetUsername: (empty)Password: (empty)
Step 6: Save APN settings.

Save APN settings.
That completes your setup process. Wishing you all the best.