Sharp AQUOS Crystal - Manual (Page 340)

Connectivity 331
2. Touch More… > Tethering & portable hotspot.
3. Select a tethering option: USB tethering or Bluetooth tethering.
Tethering is turned on, and your phone’s Internet connection can be shared with a connected
device.
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For USB tethering, connect your phone to the target device with the supplied USB cable.
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For Bluetooth tethering, pair your phone with the other device via Bluetooth.