When buying 4g proxies, what to look out for in terms of quality?

Some providers offer a week or two free trial, well the one I still use did. Not sure what they currently do though as ive been with them for over 6 months.

In my experience, it’s best to test them first before purchasing. Purchasing only based on price could sometimes not be a smart move cause price could sometimes not represent the quality of the proxies you’re purchasing.