Apple is being sued in the US after allegations that the amount of space taken up by the iOS 8 operating system on iPhones and iPads is unacceptable.
The class-action lawsuit (PDF) claims that consumers are losing out because of the increased storage requirements for the software.
The complaint was filed by two Miami residents who invested in Apple devices with a 16GB memory allocation and felt let down after installing the most recent iOS 8 update.
The court papers acknowledge that Apple makes some effort to explain the storage demands of its software, but accuses the firm of not doing enough. iOS 8 currently accounts for around half of all installations on Apple devices.
"Apple's misrepresentations and omissions are deceptive and misleading because they omit material facts that an average consumer would consider in deciding whether to purchase its products," the suit says.
"Rather ironically, Apple touts iOS 8 as 'The biggest iOS release ever.' Of course, Apple is not referring to the literal size of iOS 8, which appears to be entirely undisclosed in its voluminous marketing materials extolling the purported virtues of iOS 8."
We have asked Apple to respond to what is a range of accusations. The court documents suggest that the memory footprint of the operating system accounts for more than a fifth of the available storage, and that Apple encourages customers to adopt its iCloud service as an overflow.
"Defendant fails to disclose to consumers that as much as 23.1 percent of the advertised storage capacity of the devices will be consumed by iOS 8 and unavailable for consumers when consumers purchase devices that have iOS 8 installed," the document says.
"To compound the harm to consumers, after defendant provides materially less than the advertised capacity on the devices, defendant aggressively markets a monthly fee-based storage system called iCloud.
"Using these sharp business tactics, defendant gives less storage capacity than advertised, only to offer to sell that capacity in a desperate moment."
Apple does not normally comment on legal cases.
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