why in Iphone 4 no smiles?

IF you mean the emoji keyboard go to settings>General> keyboard> Add new. And add the emoji keyboard.

when you go to type there will either be a little icon that looks like a smile face or a globe next to the space bar to switch keyboards tap that. You may also find this link helpful: Use emoji (emoticons) on your iPhone, iPad, and iPod touch - Apple Support

It doesn't look like you added the emoji keyboard yet. *Edited to remove multiple photos*