FWIW It may be an iOS6 issue not a phone issue. I have a similar issue on my 4S.
I've been having weird issues lately. My battery doesn't seem to work properly (losing 1% ever 2 minutes of use), wifi is a hit or miss, and my cellular signal is significantly worse than my 4S. It gets less bars in the same places.
Tonight I connect to wifi, and decided to run a long video on youtube. The ENTIRE TIME connected to wifi. I get a txt message saying I used 1gb of data in ONE day!!! (from verizon)
I checked my usage just 2 hours prior and was at 270mb. Now over 1gb. Something is terrible wrong, why would LTE be used if I was of wifi?!!?! I am getting charged for this! The only time I did anything data intensive was watching the youtube video WHILE connected to wifi.
Do I have a lemon? Does anyone notice odd reception, worse than usual battery life, wifi I believe is software, but now its using my data on my cell plan while connected to wifi (showing the wifi icon in the status bar). I reset the phone 2 times today. I did a full restore (not from backup) after noticing significantly worse battery than my iPhone 4S that was a year old.
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I am now at 1.7gb while my iphone is just sitting on the home screen......
Well iOS 6 does have that new setting that allows it to switch to cell if the wifi signal is weak. It's nice for a constant connection when backing out of the garage, etc. I'm wondering if there is a bug in it?
I didn't purchase this device to play with the settings every time I want to browse the Internet.
mmmm. I don't have that feature?
It was removed in the final build of iOS 6. I was wondering why I couldn't find it on my phone.
http://www.idownloadblog.com/2012/09/25/wi-fi-plus-cellular-missing-in-ios-6/
As someone who has worked in tech support, I have to say that there is almost nothing a user could say to me that would convince me their phone is using LTE when connected to wifi. It would get filed under "user error".
Perhaps, you should turn off LTE and cellular data while on Wifi and you won't have to worry about it connecting to 4G or LTE. If you don't want to, then deal with the overages. All it takes is a flip of the button.
It may still be silently doing this from testing with an AT&T 4S running iOS6. We had users report about having problems getting to ActiveSync while on a certain WiFi network here at work. The device I was testing with eventually hit a timeout and just started working. However, it was then obviously working through cellular data, as other services that would normally be blocked started working as well.
So it may be that just the toggle was removed to be able to disable this.
Possibly. I'm visiting my folks for the week and due to where their router is located and the style of house, only half of the house gets a decent connection. The rest of the house gets a snotty connection and my iPhone struggles to use wifi and never bothers trying cellular. I have to manually turn off wifi to get an internet connection on those areas of the house. I wish it would automatically switch, but for me, it doesn't.
-- There's definately a discrepancy in the data usage counter in iOS 6 and what Verizon reflects. I don't necessarily know if it's a bug, but they certainly don't match. I don't really even care so long as the VZW number is lower lol.
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not sure why OP is getting so defensive when someone suggested to try turning off LTE while on wifi just to see what happens. He wasn't saying do that all the time he just said to do it to test the theory.
The problem is, 4 days into my billing cycle I have used 1.7gb of data. I've never hit a full 1gb in my history of owning an iPhone.
I was on wifi watching a youtube video and got an alert I had used a significant amount of data. Verizon has stamped the time while my iPhone showed using WIFI data, I was in fact being charged for LTE data.
Generally the iPhone measurement is immediate, and the carrier measurement is delayed by 24-48 hours.
Thank you. Testing was what I had in mind. And I'm a she.
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And have you tried turn OFF the LTE? Do that and then call Verizon and lay out your case to have the charges reversed, at least. Have you Googled the problem to see if it's a known Verizon issue? It may be hardware related or provider related and unfortunately the detective work falls to you as the user. Sucks, but that's what happens.
BTW, I'm on AT&T and don't know Verizon's way of doing things.