The competition is heating up among cellphone carriers. AT&T Inc. (NYSE:T) in response to T-Mobile US Inc (NYSE:TMUS) friendly service offers to customers is introducing a new plan that will do away with wireless data charges for customers that have no annual service contracts. Under the plan, a smarthphone customer with no annual contract will only pay $65 a month for services including unlimited talk and text, 50 GB cloud storage, 2GB LTE wireless data, and unlimited international text messaging. I guess T-Mobile is really having an effect on AT&T.