Quel dispositivo ha solo una miniatura e indica il progresso che recupera un'immagine con una risoluzione più alta.
Da Domande frequenti su Apple KB - My Photo Stream
What resolution are My Photo Stream photos?
On a Mac or PC, your photos are downloaded and stored in full resolution. On iPhone, iPad, iPod touch, and Apple TV, your photos are delivered in a device-optimized resolution that speeds downloads and saves storage space. Dimensions will vary, but an optimized version of a photo taken by a standard point-and-shoot camera will have a 2048 x 1536 pixel resolution when pushed to your devices. Panoramic photos can be up to 5400 pixels wide.