Iphone is the best. Communication is very easy when i use it.Great secrets of leaders in economy is a huge way of communication. In many years have passed, businessmen use business letters to extend their appreciation, refusal, invitation to other companies.But as we observe nowadays, technology has been exploded to the best it can help business.Phones are available to contact other managers, so I think its more convenient than they used to make letter for their deals... Its cheap and accessible. No more need any payday loans to get the reply quick.