Connect to networks & devices
Connect to mobile networks
Depending on your carrier and service plan, your phone may connect automatically to your carrier's fastest available data network. Or you may need to insert a SIM card or configure details for a specific carrier. For details, read the instructions that came with your phone.
Your mobile network settings allow you to adjust several aspects of aspects of the way your phone uses mobile data. To view these settings:
1Touch the Settings icon 
on a Home or All Apps screen.
2Under Wireless & Networks, touch More, then Mobile networks.
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