Can Telecom's Tianyi mobile phone card be used on iphone?

Yes, any mobile phone that supports telecommunication network can use telecommunication card.

Apple's mobile phone telecom models and models supporting telecom networks are:

Apple iPhone 6S (full netcom)

Apple iPhone 6S Plus (full netcom);

Apple iPhone 6 (full netcom);

Apple iPhone 6 Plus (full netcom);

Apple iphone4s (8GB/16GB/32GB/64GB);

Apple iPhone 5S (Telecom 3G);

Apple iPhone 5C (Telecom 3G);

Apple iPhone 4S (telecom version);

Apple iPhone 5 (Telecom Edition);

Apple iPhone 4S (white);

Apple iPhone 5 (color version);

Apple iPhone HD.