To all apple super user

[lordofring100]

Dear all,

Kindly help me known this three apple secrets "4me"

1- some mobile's networks ask to send an empty SMS but I can't do that through my Iphone !!!!!!!!!!!!!!!!!

2-how can I connect my iPhone to my laptop through Bluetooth ???????????

3- usually I use my iPhone with wifi and at the end of day my IPhone's battery dead
So I wait till the phone closed than i recharge battery again,my question is should I full charge battery after it finish to keep it performance good or i have to recharge it when it 20% and make full charge every month


Thank u all in advance for your time