The thing to ask yourself when structuring a website is: How can my users find what they're looking for as quickly as possible?
The question for breadcumbs is: How can I accomplish the above so users also know exactly where they are in my site, and how to find other relevant information in as few clicks as possible.
With that in mind, something like this might help users find information related to specific mobile phones, while making it clear how to find information about other mobile phones in as few clicks as possible:
Mysite > Mobile Phones > XYZ Mobile Phone
The above is also more relevant to keywords like "Mobile Phones" and "XYZ Mobile Phone" (instead of "All Articles"), which adds relevancy to links as covered here.
If your directory and filename structure (i.e., URLs) also match your breadcumbs, then search engine users will see the same URL structure directly under your title in your SERP, making it clear where they are being sent to, where they are in your site, and in this example, that there's more mobile phone information just a few clicks away.