– Force close any app: If an app is not working properly or freezes, and you don’t seem to be able to do anything then try this trick. This is for those times when no key or touch helps you close the app. Force close the troubling app from Settings menu. Go to Settings > open Apps sub menu and choose from the list the app that is being dead. Tap on the Force Close to shut down the app completely. 

You can also see all the running apps in the right side of the screen. Tap on Stop to have the easy way of force closing any app on Android.

– Restart your Android device: another simplest way to unfreeze Android smartphone – or any other OS, for that matter – is to simply restart the device. Press the Sleep / Power button for a few seconds and push it to Restart. However, this Android tip will only work for those times when your device is still responding to you.

Unlimited photo click in one second. 
  Just go to the main camera of your oppo Mobile phone and click and hold the photo capture button to click 20 photo in 1 second. 
Two way to take screen shot.
1.Click the power button and volume up button at the same time to take a screenshot. 
2. Just put your three finger on the screen and move down to click screenshot. 
Sim logos. 
Go to the setting and dual sim and find to start the logos of the sim instead of their names on top left side with signal. 
Data limit. 
If you use specific data in one day you can on your data limit in setting go data usage and allow to data limit on and get notifications when you increase the data limit. 

First, make sure that 3D Touch is enabled on your iPhone. Pull up your iPhone keyboard and then 3D Touch anywhere on the keyboard. Do not remove your finger from the keyboard. This should turn your keyboard into a trackpad/mouse and you can move your finger to where you want your cursor to move. This makes it easy to edit/add to long texts that you have written.

There are numerous apps on playstore to take screenshot like lightshot etc. But if your using OPPO smartphone..Just rub three fingers simultaneously on screen to take a quick screenshot. 

If you ever feel like the headphone volume in your Android mobile is low, you can increase the volume as like more by using this idea,
Go to dial pad and type     *#*#3646633#*#*
Then we get the engineer mode and go to the hardware option go to audio testing click on the headset mode change the value to 160 that is a maximum value set the value and you're good to go           

Check Your Internet Speed easily On Your Android Phone Easily!
Are you curious to know your internet speed on your mobile phone within few seconds then I have a great solution for you. A best internet speed measuring app that is "internet speed meter lite". It displays a table that will tell you how much data you have used for lifetime. Also, it shows you data used in notification panel and moreover monitor your internet activity as well. So, go ahead and download it.
1- First of all Search for "internet speed meter lite" on Google.
2- From search result, go to first or second result displayed after searching.
3- There are many versions available, choose latest one and install it on to your mobile phone
4- Open it and it starts to showing you details of data used and also by clicking above, it shows you your internet speed and table of data used in lifetime.

If you want to use Android’s split screen mode,  you’ll need to be running Android 7.0 Nougat or later. While some Android phones have had split screen multitasking for a while, Android N, or Nougat, is the first to have it built in to the OS. The process to enable the split screen features  is pretty simple with this steps:
1. First you need to open atleast two apps you want to apply split screen. 
2. Tap the app switcher button  in the bottom left corner of your phone (for most of  the phone).
3. Tap the split screen button at the top left corner of  your phone screen.
4. Drag upward the first app of your choice.
5. The just tap to select the second app to be display on the bottom. 

That's it. Your done and enjoy!

Tired of being getting frustrated by pile of bloatware in your smartphone ,consuming memory ? Well thanks to the developers and freeware , Greenify is the still the leading app in 2018 according to my experience which can improve your smartphone performance by hibernating unwanted apps and builtin apps(Bloatware) making your phone even smoothier as it was in the begining.By using greenify , you can play games for hours without any more RAM consumption which causes lag in games.I'm currently using LG G2 with 2GB RAM and it is working flawlessly!
Follow is the method to download and use the upmentioned app.
1: Go to google play and type greenify or simply click this link http://zipansion.com/3Rzxn.
2: Download and install the app.
3: Open and give permission to the app .
4: From the list, choose desired apps to hibernate.
5: Click hibernate button to hibenate apps .

Note : Greenify also has simple one click buttton widget making it even more convenient to use form your homescreen.

Add a receipt or form to a note. Tap the Plus icon, then tap Scan Documents. Notes automatically senses and scans the document, straightens and crops it, then adds it to the note.

Now you can control your PC with your phone.  Just download Unified Remote control app to your device. It works with Android, IOS, Windows phones.  Next you need to install Unified Remote Server on your computer .  Visit Unified Remote Website to install server. After that open the app and then you can connect with the server. Must  remember both devices  must be connected to the same network. Once connected You can Control mouse and keyboard.  Share your screen. you can get fully control of your PC with this App.

When you are busy online or gaming online and keep receiving online apps messages or calls like from whatsapp it'll be very annoying and disturbing...
To prevent this you have to switch off the internet connection (to the specific app)
Here's how
Go to settings,
>Apps
>select the app Example: whatsapp
>data usage
In that you'll see Mobile data and wifi at the bottom
You just have to turn them off.
Now the specific app  won't have internet connection. So it'll stop working

 in today's era when everything is fast in the world and everything is handheld on their phone the life cannot be stopped. in this fast moving era one cannot even think to stay without their phone. now sometimes the mobile phone goes into silent mode therefore to prevent this you should keep it in vibration mode. the samsung galaxy s6 provides very good vibrations for you. this factor can be maintained by going into the settings. If you go into settings > sound and notifications and then tap vibrations. you will find many options here and how to handle your vibrations settings. You can decide by this settings that whether to turn on the vibrations or not. You can also manage your vibration intensity and its settings. By this you can manage to have strong vibrations.