How to enable VOLTE on Vivo V9 ?

Go to Settings, Personal, Backup and reset, and select both Backup my data and Automatic restore. Go to Settings, Personal, Accounts & Sync, and select your Google account. Select all of the option boxes listed, to ensure that all available data is synced. Vivo V9

Hide Photos and Videos on your phoneTo hide photos and videos on your phone you will have to download the app named "Gallery Vault" and follow the steps below: : After downloading the app from the playstore you need to configure your app. : Open the app and it will prompt a "Grant Access" screen. Tab on that and allow all the prompts as shown in the Image below : It will ask you to set your password and enter the email Id for recovery. : After completing all these processes you will see a app welcome screen. Read the instructions if you want and click Next. : On the main screen you will see a "+" button. Tap on that and Select the Images or Videos you want to hide. And you will see a confirmation message on your screen as shown in the Image below. And you are done!You can also check the video below for your reference: You can check the complete specs of this phone: Vivo V9  

To hide or protect your apps I would suggest you use App lock.Heres how. : Download App Lock from the Google Play Store. When you first start the app, you will be prompted to set up an unlock pattern after which you need to provide an email ID for security and backup purposes   :   : You will then be taken to the main screen of the app. Under the Privacy tab, scroll down to find a list of applications that you can lock. Tap on the app name that you want to lock. The first time you lock an app, you will be prompted to grant App Lock Usage data access. : Press the back button to go back to the main menu of App Lock. Now, you can lock any app that you want by simply tapping on the lock icon near its name. At this point, if you try and open any locked application, App Lock will prompt you to enter the unlock pattern that you first created. To make the app use the fingerprint scanner for verification purposes, head over to the Protect tab and enable the Fingerprint lock option. Now, whenever you open a locked application, you can either unlock it by simply verifying your fingerprint or by entering the unlock pattern. The fingerprints that you have registered for unlocking your device are the ones that will also work with App Lock.Here is the video guide to do the sameYou can check the complete specs of this phone:Vivo V9

Steps to Disable App notification 1. Go to settings. 2. Then go to Applications.3. Select the app for which you want to disable notification.4. Tab on Show Notification checkbox.5. Your device will prompt a message to confirm select OK and you are done.You can check the complete specs of this phone: Vivo V9

To Increase the speed of your slow Android phone here is the guide to speed it up in 5 Minutes1. Close all your unused apps. Closing all the apps which you are not using saves a lot of memory usages which can be utilized by other apps to make it run faster. 2. Clean all the app cacheDownload Clean Master software from the Playstore Clean Master Press Junk Files and let it do its work After that press on Phone Boost option. 3. Disable the Animations1.Go to "Settings" 2. Then Go to "About phone"3.Tap on " Build Number" 7 times. 4.  Then Go back to settings and Tap on " Developer Option" 5. Scroll Down to "Windows Animation Scale". as shown in the Image below 6. Tap on "Animation Off". You can check the complete specs of this phone: Vivo V9