Apple and Alphabet's Google are facing a probe over anti-competitive practices in Mexico after the country's former telecommunications chief filed a complaint, he said in a statement on Twitter on Friday.
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The complaint was brought to Mexico's telecommunications regulator IFT by Mony de Swaan Addati, who once headed the former telecommunications federation that was later replaced by IFT.
His complaint accuses Apple and Google of "completely inhibit(ing) competition" by "taking advantage of their monopoly in app stores to tie use of their own payment processing systems for in-app purchases."
In his online statement, de Swaan Addati said Google's Play store and Apple's store charge 15%-20% commission, forcing price inflation.
Google declined to comment. Apple and the IFT were not immediately available for comment.
A wave of lawsuits and complaints challenging the pair's app store rules in various countries over recent years has led Google to lower fees and Apple to loosen rules, but some app developers and other critics say more changes are needed.
De Swaan Addati added that Mexico's competition regulator had declined his request to open an investigation into the companies, prompting him to take his case to the IFT.
"I have full confidence that (the IFT) will investigate and exercise its powers - in line with international best practices - so that these companies stop abusing their market power to the detriment of developers and consumers," he said.
According to data firm Statista, over 30 million smartphones were forecast to be sold in Mexico last year.
Google's Android has the largest market share in Mexico with 77% penetration, according to the latest data from Statcounter.
Apple is facing scrutiny elsewhere in the region, with Brazilian regulators having banned the sale of iPhones without a charger earlier this week.
