Yeah, when you do it for landscape..if you don't already do this, its so you can slow your shutter speed down to allow more light to the sensor. That's what usually happens with most people using cell phones. Not knowing their phones are in 'auto' mode. When the phones camera sensor doesn't detect enough light...it 'automatically' slows the shutter speed...too much. The slightest hand movement creates blur.Using the timer is a great trick. I do that with my DSLR as well. Timer and a tripod made a huge difference with my landscape shots! I am pretty amaturish though.