
Its own research found that the 16 GB iPhone 6 Plus actually has only 10.3 GB storage available out of the box, or 36 percent less than advertised. Almost all the major phone brands are guilty of the same offence. For example, of the 8 GB advertised on the Microsoft Lumia 640 XL, only 3.25 GB is available to the user, the Sony Xperia M4 Aqua offers 2.45 GB of the promised 8 GB, and the Samsung Galaxy S6 has only 24.7 GB available of the advertised 32 GB.