Why is usage data over?

[vtretiree]

I switched to an iPhone 6S and since then my data is over my limit.  Long story short, I finally got a tech at verizon that explained the problem.  Although I have WIFI assist disabled and I am on WIFI 98% of the time, this phone will take the high bandwidth which is Cellular, even though I have wifi in the house.  You need to turn cellular data off when you are in wifi, that will force the phone to use that INSTEAD of your cellular data

[bearone21]

sounds like your wi-fi wasn't that good & data kept you connected.

why, if using wi-fi would you disable wi-fi assist??

[st83871]

I don't have an iPhone though.  Android.

I don't think it's the same issue

[rcschnoor]

bearone21 wrote:

sounds like your wi-fi wasn't that good & data kept you connected.

why, if using wi-fi would you disable wi-fi assist??

Because with wi-fi assist enabled, the phone will "assist" wi-fi by using cellular data.