How to control my friends phone screen

We are surrounded in Technology but it’s very biggest problem for older or uneducated people. Any problem having a solutions

Ever wanted to give another Android user a hand? “Inkwire” lets you easily share your screen to another Android user. With just a couple clicks, you can request to view another user’s Android. Once connected, you can optionally start a voice chat, and draw on their screen to guide them through their issue.
In which you can share your smart phone screen on your friends .
Great for:
* Helping friends and family out with phone troubles
* Customer support for Android apps
* Teaching new Android users

Finally you see this tutorial in Hindi,

This app downloading link also available on description box in this video.