Taiwan’s Fair Trade Commission has hit Apple with a small fine and warned the company that it may face a more substantial penalty if it doesn’t stop interfering with carriers’ iPhone pricing and the prices of the plans carriers sell alongside the iPhone. The Wall Street Journal on Wednesday reported that the FTC in Taiwan slapped Apple with a $667,000 fine for “interfering with mobile service providers and handset distributors’ pricing.” If it doesn’t stop meddling with carriers and other retailers when it comes to iPhone prices, Apple may be fined an additional $1.67 million.

“Through the email correspondence between Apple and these three telecom companies we discovered the companies submit their pricing plans to Apple to be approved or confirmed before the products hit the market,” Taiwan’s FTC said in a statement.

The WSJ’s report noted that the ruling only applies to Apple’s iPhone and not to the company’s iPad tablet lineup.