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February 8, 2013 at 12:04 pm
#760
Galaxy Note
Member
He can turn off wifi when not in use.
If 4G signal is too weak, he can also switch to 3G (settings–other settings–Mobile networks–Network mode, chnage to GSM/WCDMA). Also, when he does not need mobile data, turning off mobile data will save a lot of power.
Anyway, turn on wifi or mobile data only when you need it.