Tire speed rating tells you the maximum service speed for a tire. A speed rating isn't, however, a recommendation to exceed speed limits, and doesn't indicate how well a tire handles or corners. The speed rating tells you the maximum speed capability of the tire when properly inflated.
LTE (telecommunication) Long-term evolution redirects here. For the biological concept, see Evolution and E. coli long-term evolution experiment. In telecommunication, Long-Term Evolution (LTE) is a standard for high-speed wireless communication for mobile phones and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies. It increases the capacity and speed using a different radio interface together with core network improvements.
One more reason for a phone switching between 4G and LTE is that many LTE phones/ base stations do not support voice calling. In such cases, the phone falls back to a 3G network (AT&T calls this 4G). The phone comes back to LTE after you complete the call. The following article covers this topic: