KOCASO M776H - Manual (Page 22)

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6. Bluetooth distance induction device
Open Bluetooth distance induction device, when two Bluetooth devices distance is
quite far or connection is cut off, the Bluetooth will remind you with sound.
3.4 Data Usage
Check SIM card data usage, as Picture 3.15
Picture 3.15
Check WI-FI data usage
Click icon in right top of Picture 3.15, click Data Usage, as Picture 3.16
Picture 3.16