How to make my Verizon bill, cheaper?

Currently, I pay $110 for family plan, using all basic phones, having $10 text package only. Next month, in October, I plan on upgrading my phone to the iPhone 4S which is only $100 now, how can I make my bill cheaper than $110? How would I go about doing the Share Everything Plan? Would that make it cheaper? I'm going to get iPhone 4S, my parents will be getting Samsung Stellar, without text or data, because they don't text or internet, on their phones. What is the best chances to lessen my bill?

You should ask them

If you upgrade to an iPhone 4s, it won't' be cheaper than $100.In fact, it will most likely go up.

On the "Share everything Plan", if you got 2GB of shared data (Which, btw, you'd have to add your parents anyways, because the "Share everything" applies to all phones on the family account, and includes unlimited voice and text), it would cost $160 a month, before taxes.

The cheapest plan you will be able to get with a iPhone 4S and 2 basic phones will be $187.50

$40 for the Iphone
$30 for one basic phone
$30 for the second basic phone
$50 for 1GB of data

$150 Subtotal
$37.50 for Taxes and fees (25% of subtotal for federal taxes and fees)
$187.50 for Total bill with taxes and fees not including insurance and other add-on to your Verizon bill