Caroline Criado Perez - who played an important role in Jane Austen's image appearing on the British £10 note - has revealed she developed repetitive strain injury from using an iPhone that was too big for her hand.
Speaking to the Daily Telegraph newspaper, Caroline explained: "I genuinely have repetitive strain injury (RSI) from having an iPhone 6, and it went as soon as I switched to an iPhone SE.
"It genuinely does affect women's hand health. Women do buy more iPhones than men, it just baffles me that Apple doesn't design with our bodies in mind."
Caroline said women are entitled to be "furious" about the situation.
She continued: "We should be furious about this, we are paying just as much money for it as men for a product that doesn't work as well for us.
"I have to make a choice between making an upgrade to the only phone that fits my hand before they discontinue it - soon there will be no iPhone that fits the average woman's hand size - even though the technology is two years out of date. Or get a new one and deal with the fact that it'll give me RSI.
"That's not an acceptable choice in the 21st century, you need to have a smartphone."