How to hide photos and videos on RealMe C1 ?

It shouldn't disable automatically. You can try these settings : Open Settings > Calls > Carrier's Call Settings.Click on Additional settings from the next settings screen which also includes call forwarding.Toggle to turn on the option for call waiting. If you are here to disable it, just toggle the option off.To see the complete specifications of this device : Realme C1To see the list of service centers: List

To cast your phone screen on your TV you need to have Chromecast. To cast your phone screen on your TV you need to have Chromecast. Follow the steps to successfully cast your screen-Before you begin castingConnect your phone to a Wi-Fi network.The mobile device, tablet or computer you are using to cast must be on the same Wi-Fi network as your Chromecast.You must be running the latest version of the Chromecast-enabled app. You can always double check that you are on the latest version by visiting the Google Play Store.Cast from Chromecast-enabled apps to your TVMake sure that the phone you are using to cast is on the same Wi-Fi network as your Chromecast or TV with Chromecast built-in. Open a Chromecast-enabled app.Tap the Cast button Inactive cast extension. Note: The Cast button isn't located in the same place on all Chromecast-enabled apps.Tap the device you'd like to cast to.When you're connected, the Cast button will turn color, letting you know you're connected.Select the app like Youtube, Browser, Google Music etc and look for the Cast icon as shown in the image below.You can now cast videos, movies and TV shows directly to your TV.To stop casting, tap the Cast button and then Disconnect.You can also watch this step-by-step guide to do the sameYou can check the complete specs of this phone: RealMe C1

You don't need to enable VoLTE. Insert the Jio (VoLTE enabled) in any slot. By default, VoLTE will be active. If it is not, you can change the network preferences from Network option in settings.Go to Settings > Call Settings (Sim and Network)Tap Cellular networks > Enable Voice over LTE On/ Off.Alternatively,you can simply dial *#*#4636#*#*Choose Phone information.Click " Phone Information" and Toggle VOLTE Provisioned.Restart the phone and you are done.You can check the below video to get more clarity:You can find full specifications here: RealMe C1

Turn off the phone and then press and hold the Volume Up key and Power key simultaneously until the Android system recover screen appears.  Use the Volume Down key to highlight the wipe data/factory reset option and then use the Power button to make the selection. You can find complete specifications here: Realme C1

Taking Screenshot on Realme C1 Navigate to the screen you wish to capture.  Press and hold the power and volume down button. You hear a shutter sound and you are done. You can find the screenshot in the screenshots folder of your phone. You can see full specifications here:Realme C1