There’s always an option called:
You can basically hire remote testers from a specific country which will have specific mobile devices. It will be quite cheap if you want to do for example one test case, or short exploratory testing session.
You could create a test case that requires them to walk like 2km or something like that. It really depends on what you are searching for 🙂
http://www.utest.com/ https://www.testcloud.io/ http://www.testbirds.com/ https://crowdsourcedtesting.com/ https://www.pay4bugs.com/ http://www.mob4hire.com/ https://mycrowd.com/ https://test.io/ https://usabilityhub.com/ https://globalapptesting.com/