Quincy has been mapped by me with 3G, 4G is non existent even when Sprint updated the maps for 4G. Only across Taylor where the bridge is on HW 24 has a 4G Tower that radiates into downtown to only the unemployment office parking lot. Strange because Taylor, MO not great of a location to test. Sensorly 4G areas in Quincy proved false or turned off for 4G when tested every quarter. LTE is everywhere for AT&T in Quincy (I'm mapping it by myself). Verizon Allset plan (difference coverage map for prepaid) completely roams with 1xx. Unless post paid has roaming with USCC. Sprint 3G speeds are around .2-.4 down and .5 up usually. North side of Quincy has a tower that is able to have 3G going up to 2-4Mbs. Macomb has it good because of Western IL college with Sprint 4G. Also in Mt. Sterling as well. Springfield has various areas of 3G not completely all set up for 4G or even Spark.
Although going down south to St. Louis it has a very good Sprint Spark signal down the highway. But not very fast. probably around 2mbps. The reason why Quincy and surroundings is not moving forward is because USCC has a partner that they have license to operate the spectrum in the area. Tmobile just has like two towers to just maintain their license doesn't really upgrade their tower in the area.