I need storage for my phone

MohamedElmadaawi wrote:

I need storage for my phone

You cannot increase the amount of storage on an iPhone.

I need buy storage for I cloud

Please see Upgrade to iCloud+ - Apple Support

Note that this requires a monthly subscription, and the storage is online and accessible to your phone. However if your phone is short of storage space, extra iCloud storage won't make any difference.

The pricing for the different levels of storage in various countries is listed here.