Where to store pictures for mobile application?

Question

Mobile development

Colleagues, where (or how) to store pictures for your mobile application? I mean hosting or an image server, in general, I don’t know how best to solve this issue: for my application I upload pictures via http, but I don’t know where to store them so as not to write my own server! How do you do if? In general, advise on the experience of "what" to do, buy a piece of space on the hosting and write a server, or is there an easier option?