We rank the top mobile providers and their ability to combat spam phone calls, along with network capacity and pricing. Some carriers are better at stopping unwanted phone calls than others. Do you really want someone calling to sell you the SmashGoods Professional French Fry Cutter during dinner? Or would you rather the phone directly go to voicemail and you can decide whether or not to call back later? Exactly! That's why we help figure out who's calling, regardless of which mobile carrier you're using.