I need my phone to be update

Assuming you have a compatible device, see: Update your iPhone, iPad, or iPod touch - Apple Support

And: If your iPhone, iPad, or iPod touch won't update - Apple Support

If the above Apple articles do not help, please post back with relevant information. 

Hello ~ Take a look at the links below by clicking on below…

Update your iPhone or iPad - Apple Support

If your iPhone or iPad won't update - Apple Support

What model iPhone do you have?

Identify your iPhone model - Apple Support

Post back if needed and take care.

~Katana-San~