29

Changing the starting day for Mobile data is indeed non-obvious. You need to enable the mobile data connection (2G/3G) before the options are available: TURN OFF WIFI First. Enable Mobile data. Exit the Data usage settings app. Tap the spinner below the Set mobile data limit checkbox. Tap Change cycle.... Change Date of each month (I prefer the first day ...


16

What you are seeing here is cellular data (mobile data) only. I am not sure what you would count as a "canonical answer", but the following three screen captures have been taken from a stock android ROM with Android 5.1.1 (as you can see by the presence of the Samsung bloatware): Data Usage (default) / with hamburger-menu / data usage, WiFi tab (click ...


10

On a rooted device, go to /data/system/netstats/ and delete all the files there. Reboot the device and the data history would be gone. Worked on Android 4.2.1 and 5.0.2, and maddisonj and Beygi reported it works on 4.4.2 and Android 8.0 as well. It clears both SIM data as well as of Wi-Fi. This would not reset the current cycle you would be having. I ...


9

Of course not. Your WiFi will go through your WiFi chip to AP and to some other ISP. There is no connection with 3G just like you can use WiFi even without SIM. But your carrier can(though highly unlikely) use some tracking program to track you and find what you are doing. Even if they do, the WiFi usage won't be counted as 3G. One advice I'd like to give ...


9

Don't know of any YouTube option for that end, but if you are open to use an app to limit other apps, you can give a go to Onavo Count | Monitor Data that has an option to limit the app to Wi-Fi only: Save money on your mobile bill - avoid costly overage fees! Onavo Count puts you in control of your 3G data plan. Easy setup, three brand new widgets, ...


8

I've found the culprit! I went to Settings > Call > Internet call settings and deleted the SIP account I had once created and forgot. The phone kept reaching the SIP server (probably to check for incoming calls). I had to install a packet sniffer on the phone (tPacketCapture) to see where the requests where going and realize I had configured a SIP account.


8

Assuming you've got Android 4.0 or higher, you can do the following: Go to Settings→Data Usage Activate the limit by marking the checkbox, and moving the red and orange bars for "Deactivation" and "Warning" (hint: you can set them imaginary high to not have any effect -- but they must be enabled) Now scroll the list below the graph and ...


8

FOR ROOTED DEVICE (copied from Mansour's answer on this post) Checkout BradyBound. It's a system wide download speed shaper/limiter. Few things to note: The app requires root access. It works by dropping packets using iptables. This wastes some traffic - how much depends on the type of traffic (e.g. long running download, web browsing). Rate measurement is ...


7

This has been happening throughout the world and is caused by a technical feature of 4G LTE. Most people don't even notice it because of the small amount of data that's used off their data plan. This is what happens: every time your phone receives or makes a voice call, it automatically switches from 4G to 3G mode due to the fact that LTE is a data-only ...


6

Yes, such internet-based applications normally use background services to stay connected with their servers and use mobile data when Wi-Fi is not available. But data usage is often very low for such background apps. If you want to stop any data usage of any app when you are not using internet apps, you can disable mobile data temporarily. To do so, Go to ...


5

I assume you're talking about the Youtube app. As far as i know videos are only preloaded when your phone is charging and connected to wifi. When a video is preloading it shows a little white arrow pointing down on the bottom right of the video (when viewing your watch it later list). When it has fully preloaded it shows a green circle with a white down ...


5

For me (CM 12.1), it is still confusing. You have to go under Settings, Data Usage and then: make sure that both Data connection and Set mobile data limit toggles are ON below them, there is range of dates dropdown, which you can choose to see data usage of previous months. Click on it, and you will get a list of previous periods. now, you have to scroll ...


5

Unfortunately I don't have enough reputation in this sub-stackexchange, so I will answer instead of commenting. This options is not available in Android (up to this date), but there is an issue (which you can star*), which has unfortunately been marked obsolete with no reason whatsoever. Maybe it can be rediscovered if enough people star it. P.s.: Here is ...


4

Yes, there's an API for that (the class is android.net.TrafficStats). It was added with API level 8 (Android 2.2). As you can see below, it offers both Rx and Tx bytes in total, only accounting mobile or per app (added in API level 14, note that with an equal UID count as one). This is an excerpt, see the link below for all methods. static long ...


4

On Android, Wi-Fi is always used in preference to mobile data when connected to a Wi-Fi network. This was quite clear in Gingerbread and older versions of Android, which removed the mobile data icon from the status bar when Wi-Fi was in use. From Honeycomb onward, the mobile data icon may remain on screen when Wi-Fi is active. If your carrier/handset ...


4

Depending on what apps you have installed, apps like facebook, twitter, google+ and others will download data in the background to keep current when you open the app. With ICS, you can disable background data usage for specific apps: (click to enlarge) this is visible in the system settings -> data usage. you should then see a list of apps that are using ...


4

Okay, I did a brief test the other day... only drove about 80 miles, ... obviously longer drives would give better averaging samples. But from my short drive, it seems that Maps navigation uses roughly 1 MB for every 10 miles.


4

The Data Usage screen can show both Mobile Data and Wi-Fi usage (but only shows one by default). You're almost certainly seeing your Wi-fi usage, 750MB doesn't sound unlikely for a new device that will have downloaded settings, apps, contacts, and probably OS updates. If you have a SIM card in your phone then the Data Usage app defaults to only showing ...


4

As far as I can tell, Android OS (sometimes called OS + others) is not actually a real application to say. Basing this on one data application I've used it is explained; It is a "catch all" pseudo-application accounting for the difference between global usage (displayed in the main screen) and the sum of all installed applications usages. Initially ...


4

If you have rooted phone, go for nethogs (for live monitoring) or iptables (to get statistics) commandline tools. Using VPN or Android stats based apps is the only possible non-root solution. Or refer to this answer for a logcat/dumpsys based solution. First of all, tracking a UID or PID of a network stream isn't straight forward because these aren't ...


3

I found this app "Onavo". I did not try it but maybe you want to ;) I read that you can set the limit in the data usage settings. But i don't find the settings, maybe because I use stock rom. Hope this answer could help you.


3

Have you looked at something like Onavo Count to monitor data usage?


3

avast! Mobile Security has, in addition to multiple layers of protection, a firewall module that allows individual control of each application with toggling of Wi-Fi/data/roaming access. Onavo also works great as mentioned but doesn't have the other features that Avast has.


3

See this question for someone else with a similar concern. He also has a Galaxy... To be sure you are using only WiFi connection, you should specifically turn off the mobile data connection (in that case you will have no connection if you lose the WiFi connection, instead of switching automatically to mobile data connection without you noticing.) There ...


3

DroidStats does this for calls, SMS, and data: You can place widgets on your homescreen1 or, with the pro version, even inside your notification area2. Limits can of course be configured. It even shows data usage on a per-app basis. Statistics can show your most-called (and most-called-from) contacts, and more. As for data, 3G Watchdog even can go a ...


3

Some networks allow you to check how much you have used such as O2. If you have ICS or Jelly Bean there is a Data Usage listing in settings. Alternatively try apps like these http://www.theandroidsoul.com/best-android-data-usage-apps-for-monitoring-3g2gwi-fi-usage/


3

Dial *#*#4636#*#* Go to Phone Information and click Disable Data Connection.


3

"Data Roaming" just refers to using data when connected to a foreign network (i.e. not your providers "home network"). There should be another option available for "mobile network" or "mobile data" (the phrasing may differ between devices), as the following screenshot shows: Look out for the red frame at the end. If you find something similar, remove the ...


3

Assuming that you are using a Galaxy Ace with Android v2.3 (Gingerbread), I suggest you to use an application like 3G Watchdog or Onavo Count. But if you are using a Android phone with Android v4.0 (Ice Cream Sandwich) or higher there is a built-in option in settings menu called "Data Usage".


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