If you want to add someone to a group text on your iPhone, there are a few different ways to do it. The first way is to open the group text conversation and tap on the three lines in the top left corner. Then, tap on the “Add Person” button in the bottom right corner. The second way is to open the group text conversation and tap on the three lines in the top left corner. Then, tap on the “Share Contact” button in the bottom right corner. The third way is to open the group text conversation and tap on the three lines in the top left corner. Then, tap on “Add Contact.” ..