The setting you are looking for is, most likely, found in Settings → Development (might be called "Developer options"; I know on some ROMs this option is initially hidden -- but if it's hidden in your case, it would be funny how that CPU overlay was activated). Scroll down a bit there, and you should find the "Monitoring" section -- where you probably ...
There are several ways to collect this type of information, I'll be speaking about two that I use on a daily basis as to oversee what's going on with my devices:
Using a terminal application, you are able to run Linux commands like top or ps that provide information about the currently running processes:
ps (i.e., process status) displays ...
Oh dear, the moment I offer a bounty on this question, I bump into the solution myself.
Cyanogenmod has a "Dev Tools" app. In "Development Settings" in this app, uncheck "Show running processes" to make this go away.
(Edited - confirmed also not working on 7.1.1 unrooted.)
This should work on any Android version, but you might find the output a bit unfriendly:
Install and launch Termux (Google Play)
Open Termux and run apt install top
You could take a look at SystemPanel1 or System Tuner2. Both let you monitor your ressource consumption (not only battery), and (at least in their respective Pro versions) also offer to do so in background, collecting data for later evaluation. System Tuner2 also offers a bunch of nice widgets3 for your homescreen, if you need to watch things for a while.
Many events are already logged to the system log on an Android devices. Apps such as Log Collector can be used to access the log (it allows you to email or SMS the log). The log data is extensive, and sometimes cryptic, so be prepared to spend some time sifting through it.
You may be surprised as what you find ... I was able to learn that my wifi ...
You might be able to get some of what you want from Carat. This app is a project from UC-Berkeley to measure what's using your battery and how your battery life compares to other people's devices.
It doesn't directly measure CPU, but your resource hogs are going to use more battery by implication.
From the description:
Carat will tell you which apps it ...
Was about to say the same as Firelord – he missed the "ease" part, by the way, and has you counting lines manually. Rather try adb shell pm list packages -3 |wc -l (when on Windows, better use quotes: adb shell "pm list packages -3 |wc -l"). Takes a few seconds, and then shows the number.
Example, with one of my test devices:
Linux $ adb shell "pm list ...
The UI lag is down to a number of things such:
Too many widgets (delete them, home launcher has to redraw screen upon closing the app drawer)
Home launcher - some redraw better than others (switch to different launcher)
Animation turned up to the highest value (i.e. turn it off), in ICS+, it is as simple as found in Settings > Developer Options:
I got the information here
One option to check RAM usage is to enable Developer Options.
So, just follow the steps and get your thing done. Just go to Settings > About Phone and tap the Build Number repeatedly until the notification pops up and says “you’re just 1 click away to become the developer,” or if it pops up “you’re now a developer,” this means ...
Unfortunately for you, the Android log files use a "ring buffer" (think of it as an Ouroboros), so you might not be able to see the startup logs anymore. But here are some things you can do:
Check the "battery monitor" in Settings. Provided you didn't put your device to charge again since, it should show you how long it's been running without being attached ...
Advanced task killer is very simple, light(< 300kb), and can be placed as an widget to kill all the running process in a single touch.
Also if you have developers options enabled in your phone you can select the number of background process limit or what to do when user leaves a process.
I'd suspect that there's no spyware on her phone. Whatsapp shows when a contact is online or has last been online, so it's possible that the person assumes that when she's online, she's chatting with you. You can prevent this by opening Whatsapp and going to Menu -> Settings -> Contacts -> Blocked contacts and adding the stalker to the block list on ...
Format the sd card and flash the stock rom again. This would guarantee clearing out any spyware. Here is a tutorial describing how to take it back to stock.
"…I say we take off and nuke the entire site from orbit. It’s the only way to be sure."
There are no apps appear to suit to your need. But you could use two separate apps to do what you need to do.
Use Googles My Tracks to record your location data automatically. This app,
Record data of where you are using GPS coordinates.
Allows you to monitor your trip or the places of visits in 3D maps.
Promotes easy sharing of your data.
Use Traffic ...
If you're rooted you could try Wireless Tether for Root Users.
More info and more recent versions here: https://code.google.com/p/android-wifi-tether/
Besides having way more options than the stock wifi tether application it also allows you to have a look at the bandwith used when tethering is active.