As in strength of the signal. My service is provided by 7-11 Speakout, a small service provider who uses the Rogers network to carry the signal. I was in the underground parking lot of Walmart yesterday and I had zero bars on the signal strength display on my phone. Could not make any calls. I checked with one of the Walmart associates walking by and he said he had Rogers and that his phone worked well underground and that some other associates had Chat'r or Bell and their phones do not work underground. Chat'r uses the Rogers network, as does 7-11 Speakout. Mu understanding is that you get the same service quality with the smaller service providers who piggyback on the large company networks except when it is very busy and the network might prioritize their own customers and throttle down the service for the piggybackers. My experience yesterday indicates maybe you do not get the same service quality. Anybody have any input on this?