Changing your rate plan

Most of the service providers here in U.S. won't restart your contract simply by chaging your monthly plan... Since it sounds like you have "family plan", if one of you are to get a new phone, then yes, contract will restart... Basically, renewal of the contract is based on if they give you the discount towards the phone you have purchased... They have to make up for that discount so they make you sign up for new contract... Sometimes they automatically sign you up for another contract when you don't have to... Make sure when you call to change your plan, you tell them you don't want another contract... You just wanna finish one you're in off with different plan... If you're out of the contract & you like your service provider, you might wanna consider getting new phones out of the deal...

I think that it may restart.but it depends on your service provider