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Data usage when on wifi?


It seems my phone is logging data usage even when i am logged on to my wifi network. It's a small amount (1-2mb per day) but since i only have 300mb on my plan it adds up. Example: Literally have not left my house today and have had a good wifi signal all day yet i have 2mb logged for today on data. Why is this?

10 replies

Userlevel 7
Badge +4
Depending on your phone, wifi does go to sleep which can incur data leakage
Userlevel 5
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

That's why I put my phone to restrict data usage to certain apps only so I don't mistakenly use data when I'm on youtube or watching videos.
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

I do have data restricted for most apps. I have the iPhone 6. Just frustrating because anytime I use my phone it says I'm on wifi, not LTE or 3G so it doesn't make sense to me.
Userlevel 7
Badge +4
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

With iphone it is well reported that wifi goes to sleep occasionally when not connected to a power source. So 1-2mb per day sounds typical. And my recommendation would have been to restrict data on most of your apps but it seems like you are already doing that
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

How about 10MB, 10 times at exactly the same time - Is that because WiFi went for a nap? I have a hard time buying into this WiFi going to sleep story, anybody there knowing what actually happens?.
Userlevel 7
Badge +4
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

If you feel there is another issue not caused by the wifi dropping, then I suggest turning off your data to see if the issue still occurs. This is easy to test since (around 10MB, 10 times at exactly the same time ) seems like a rather predictable pattern. If the issues till occurs then it is a Koodo issue and you will need to call them to straighten out. I would take screen shots of the dtat being off and then the data still being charged just for proof. Always good to have the smoking gun
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

It is not "easy to test, it only happens once in a while (once/month) without any sense or warning.Usually when I am at home and WiFi is fully operational. I am using only 5 applications and all my applications are set up to operate and update on WiFi only so if WiFi decides to "Snooze"? nothing should be happening - Not True?, below see example from Dec 23rd last year: 12:14:13 PM 7.74 MB Data Usage from/to  12:14:13 PM 10.71 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 10.00 MB Data Usage from/to  12:14:13 PM 4.64 MB Data Usage from/to  93.09 MBs Total Koodo Tech? told me it was my applications uploading? Without permission?, 10 of them at the same time?, same size uploads on most. He came with some explanation that could be in chinese but nothing that sounded believable to me. Sorry but I have the same problem with snoozing WiFi, remember all my apps are to run on WiFi only when it's awake.
Userlevel 7
Badge +4
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

What does your phone's Data tracking app say is using the data? Or does it confirm that data is being used at this time?
Userlevel 7
Badge +4
Dennis wrote:

Depending on your phone, wifi does go to sleep which can incur data leakage

I doubt it is 10 different applications; but rather one download of +/- 93 MB with each Tx/Rx string independently reported. I saw similar reporting when I downloaded a 1.5 GB movie. Since the packet volume exceeded the reporting level, I had multiple instances of transaction reports over a very few minutes. If you are on an LTE connection, speeds can be blazingly fast. Looks to me like a 93 MB download was pushed to the reporting / record-keeping system in the same second, thus the report you see. I'd suggest following up on Dennis' suggestion.
Badge +4
There's a setting within most Android devices that will keep Wi-Fi on when the phone goes to sleep. This should be set to 'Always on'. If it's set to 'Only when plugged in' or 'Never' and the phone goes to sleep while mobile data is enabled, you'll run the risk of using data. To check this setting go to: Settings > Wi-Fi - depending on your device you may have three little dots in the upper right hand corner (menu) or a menu softkey. Select 'Advanced' and look for the heading 'Keep Wi-Fi on during sleep' and select Always or Always on. Mobile data should be turned off when not in use.

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