First, You need to see this video "How to Install Ubuntu Mate on Raspberry Pi", after installing ubuntu mate on your Raspberry Pi, If you wanna control your raspberry pi over Wifi,Internet or Ethernet with your laptop, persional computer or your smart phone without have display monitor, keyboard or mouse please watch this video.
List of commands we use in this video :
sudo raspi-config sudo apt-get -y update sudo apt-get -y upgrade sudo apt-get -y install xrdp
Some of files you need to donwload:
SSH Client for Android [Google Play]
Direct Link to Download Juicessh for Android [v2.1.3 - Android SSH Client]
Remote Desktop Connection For Android
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