This is one of the most common questions for the Nokia C3. You can also find this in the Nokia C3 user manual. These settings below will work on most phones in order to change from a 2G network to a 3G network.
If these settings do not work then check the user manual for more information.
Nokia C3 – Change 2G to 3G
Find out how to switch from 2G to 3G on your Nokia C2-01.
- Press Menu
- Select Settings
- Select Phone
- Select Network mode, and choose dual mode, UMTS or GSM