Generally, this disclosure provides devices, systems and methods for improved coverage estimation of wireless cellular networks through User Equipment (UE) idle mode measurement and reporting. A UE may include a signal measurement module to measure a reference signal received power (RSRP) of a serving cell of the UE, theUE in an idle mode, and to determine if the RSRP is below a threshold value. The UE may also include a cell search and selection module to search for a neighbor cell in response to determining that the RSRP is below the threshold value, and to camp on the neighbor cell if the search succeeds. The UE may further include a data logging module to log information associated with the neighbor cell, if the neighbor cell search succeeds and to log information associated with the serving cell, if the neighbor cell search fails.