How do I see total call time on my Android phone?

Well, this might be old but for anyone looking for the answer.

As far as I remember it's possible to view that on the OS level. I can't find answer right now but just search online. This is a screenshot of mine in the AOSP source:
I took the image from my own source. It has call duration, time left to next call, etc. There's a few apps out there that might be able to do what you want: Phone Tracker -. Call Recordr -. For example, here's the output for Call Recordr for a single call: The only drawback to these apps is that the data is collected on your phone, not your SIM card, so you'll need to be careful about privacy. On the other hand, if you use these apps to monitor your own usage patterns then there is some benefit to having the data collected on your phone in order to help you understand your own usage patterns.

Some networks might also provide you with an app that records how much time you spend on specific calls (for example, if you're using a mobile broadband connection while on your phone, you might end up with an excessive amount of SMS traffic).

How do I check the runtime of my Android phone?

The phone is rooted and uses a custom ROM. I need to determine how much of the RAM is being used by my ROM.

If your phone is rooted then you can do an adb shell cat /proc/meminfo to get the current memory usage. This will show you only physical memory and swap used. It will not show memory used by drivers, etc. You may need to add -s to the end of cat /proc/meminfo to force it to read all available information, eg
Adb shell cat /proc/meminfo -s. More info here.

How to see total screen time on Android?

I'm working on an app and I would like to know how to get the total screen time of a user on android devices.

I already got the total screen time on iOS devices, but how to do it on Android? There are many ways to get the total time that the user spent on an Android device. I'll try to provide you an easy solution.

First, you need to install the Google Play Services SDK for your project. In this tutorial, you will use the Google Play Services API Demos application.

Open your Android SDK manager and install the Google Play Services SDK for your platform (Nexus S 4.1 or lower) or the Google APIs for Android KitKat (API level 19).

Create a new project in Eclipse with the option to "import existing code". Choose the Google API Demos application as "Projects location" and choose the latest version of the "Google APIs for Android".

In the main activity of the Google Play Services API Demos application, there is a button to get the total screen time. If you press that button, you'll be redirected to the screen time section where you'll be able to see the current screen time, the screen time last week, last month and the total screen time of the user.

See also this post on how to get the total screen time.

How to check Android usage?

I am building a website which will let users check what they are using their mobile phone for and how long.

I'm using Jquery, JAVA, XMLHTTPRequest, Ajax to make an HTTP POST request to a PHP file and store the info in MySQL database. However, when I try to do this in the first time, the site is offline. But when I check my network usage, I found that my connection is always in 3G/4G not WiFi.e. I can't even access my computer by LAN cable. Is there any chance that my phone is blocking my internet? How can I check how much time I am using my phone per day?
Check your "data usage" settings on your phone: Settings -> Data Usage -> Check your data limit. Or on some phone. Settings -> About Phone -> Check data usage. If you're on wifi, then a good amount of data transfer will be on your Wi-Fi, so it may be a problem on your connection. If you need to use Internet over your phone, or wifi is very slow, then it may be a problem of your phone. Try another sim card or different router.