Data usage while connected to wifi, using Xfinity Connect texting

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@sullivc wrote:

I am using an iPhone 4s, with AT&T wireless service. I use the Xfinity Connect app for texting, because it is included with my home land line phone package. I am often connected to a wireless service at home and/or work, but during that time, texting is using data. I thought it should be using wifi, and no data use? Is there a setting I'm missing? I am able to track the usage with the "myAT&T" app.

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@sullivc wrote:

I am using an iPhone 4s, with AT&T wireless service. I use the Xfinity Connect app for texting, because it is included with my home land line phone package. I am often connected to a wireless service at home and/or work, but during that time, texting is using data. I thought it should be using wifi, and no data use? Is there a setting I'm missing? I am able to track the usage with the "myAT&T" app.

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Does the app do any background checking. If the app sits in the background and checks email, texting, etc and the phone hiberates - screen goes dark, the wifi radio will be discoonnected and it will switch back to cellular. This is the standard operation method for the iphone and lot of other smartphones, the cellular radio needs to stay up for calls, etc but the wifi can be shutdown to conserve battery usage.