Interesting idea leveraging a cheap Android. I wonder how difficult it would be to modify an instance of a regular headless browser in order to convince a website you're using an Android browser. Not sure if Androids just come with mobile Chrome these days or if OEM/carrier-developed type stock browsers still get shipped.
Also totally right on the IP reputation point. I saw a post on HN in the last few months of someone describing how they used a cheap mobile data plan + USB LTE modem to proxy their web scraping. I believe you get effectively treated as a residential IP (depends on the complexity of the system - if they're simply blacklisting datacenter IPs then this should work) with the additional benefit of being able to change the IP assigned to the modem easily.
Also totally right on the IP reputation point. I saw a post on HN in the last few months of someone describing how they used a cheap mobile data plan + USB LTE modem to proxy their web scraping. I believe you get effectively treated as a residential IP (depends on the complexity of the system - if they're simply blacklisting datacenter IPs then this should work) with the additional benefit of being able to change the IP assigned to the modem easily.