how to compare cell phone service ?

The best thing you can do is go to each cell phone company's website and compare rates. Going to just one website that may offer all that information a lot of times is not accurate for many of those websites don’t update often. Or else you can use Whistle Out to compare all of these things at once - minutes, included value and texts messages offered by providers in a single interface. They have many search filter options such as data, text and anytime usage habits like you have requested. And by the way looking at your query I feel like you are very picky, I think you have the knowledge about the brands which are available in market. I would like to tell you that never ever purchase a Chinese cell phone because they are banned by some national governments. You must go with Nokia, Samsung, and LG they are the best in what they really make as in case of cell phones. Good luck.