I thought having ur phone on wifi drains more battery.
WiFi uses 40 to 50% less battery than 3g.
In other words, if you have a wifi network at home, connect to it with your phone, when traveling, use 3g.
I have an wifi connection at home but I normally don't use it just cuz I don't want my wifi and 3g to be on at the same time and draining my battery... but if I turn wifi on and it picks up my wifi does the system automatically use wifi or do I have to turn off my signal (airplane mode)
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