Ajax and amazon S3 on site and display on mobile phones?

Question

JavaScript

On ajax desktops, loading images for amazon products works great. But on a lenovo p780 mobile phone (1 GB of RAM, a quad-core processor MTK 6589 1.2 GHz), the mobile network worked on 3g, but we have this concept slippery, let's say better than just the Internet.

In general, pictures were loaded 3 pcs. 1-2 minutes, but the first 2 are very fast, and ajax loading of goods flies

Can you tell me what the salt is, well, who has come across ...