Two things. First is remember you have settings for active target, and project. I'm not sure which place things should be, but I made these on the target.
Set 'Build Active Target Only' to true.
Set 'Target Family Device' to iPad.
You'll know this worked because the number of compilations will be cut in half, and when you upload to iTunes Connect it won't require an iPhone screen shot.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…