Sharp AQUOS Crystal - Manual (Page 236)

Messaging and Internet 227
Note: The availability and range of the network depends on a number of factors including your
distance to the base station, and infrastructure and other objects through which the signal passes.
Set Your Network Options
1. From home, touch > Settings > More… > Mobile networks > Preferred network
type.
2. Select LTE/CDMA or CDMA.
The phone will scan for the best available Sprint network and will automatically connect to it.