Controlling the lights over a phone is relatively simple. I use two apps on my phone, Send/Expect https://play.google.com/store/apps/details?id=com.asif.plugin.sendexpect (Yes it is a paid app but there is a trial version available on their site for those just wanting to try it ) and Tasker https://play.google.com/store/apps/details?id=net.dinglisch.android.taskerm)

The send variable is what controls the lights while the expect variable is how I am checking if the lights are on or off so if you just want a simple control, just use the configuration without the if or the expect as below.