Dont tell me my business, kid. I am a NYC nightclub promoter who sends out over 25,000 text blasts a week over 4 lists. Nobody at Apple knows, because Apple's texting platform over iOS wasn't designed to handle over 100 text messages in a group at one time.
As a matter of fact, when the 4S arrived, their texting scheme was loaded with bugs. You need a seperate application to send out the texts, because iOS doesn't allow you to create folders to text blast a list through. BlackBerry allows it, or allowed it back in 2011.
I wish you would show me proof that proves the iPhone's iOS is designed to send out 1,000 text messages at one time. Fortunately, I was pro-active with Twitter and IG or I would be sending text messages in groups of 50 for hours. Apple can't guarantee more than 50 text at one time, as per their CSRs each time I called.