For professional photographers you may prefer to use DSLR cameras, but for most of us today you are just getting a photo with Smartphone that is easy and always with us.

You will notice that as soon as you start zooming by pinching, the photos simply become a blur and lose detail.
In the event that you would like to concentrate or zoom on something in particular. I recommend to do this...
1. Get close to the Subject as close as you can.
2. Take a normal photograph.
By doing so you will have a better shot that look good and may be great. Sometime I create my artist photography by this way as well.
Cropping allows you to enlarge the image while still retaining a decent amount of resolution to make the photo a good one.
Surprisingly by cropping, you will get more than one photo from just one shot that you took.
Try it and you can make better Photos with just your Smartphone.
(If you want to have a good telephoto for your smartphone, let's try the new Universal Smart Phone Camera Lens Kit a new kit of Smartphone that will make your images look great and look more professional)