As a iPhone repair service, can I use the words iPhone or iPad in my marketing materials?

Yes you can say that you do this type of repair but you cannot state you are an authorized repair facility or any other such type of advertising unless it is true. I would suggest that you contact an attorney in your state that handles business litigation. Also you may want to look at the truth in advertising statutes federally and in your state.

Yes you can - but VERY carefully. A dealer who specializes in selling, servicing or repairing a certain brand of product has the right to so inform the public - by use of that brand designation in advertising - BUT ONLY - if the dealer's advertising and use of another's trademark does not confuse the public into thinking that the dealer is an authorized agent of the brand owner. For example - your advertising can clearly cite that you repair "smart phones" such as the iPhone, and tablets, such as the iPad. However, DO NOT include iPhone or iPad in the name of your repair business.