A method to guide the placement of new small cell, wherein a small cell is a radio cell station with much smaller coverage area than a macro cell, having one or more existing wireless cells, one or more mobile devices of known location and application use and context, a processor and database system, a new small cell, a device for guiding the user in the placement of the new small cell, includes the steps: the location dependant measured network characteristics and location dependant contextual data needs of the mobile device are recorded and stored in the database system over time; and the contents of the database system are used to determine the likely future location specific network needs, such that this information together with the characteristics of the new small cell are used to determine the placement co-ordinates of the new small cell, and use the placement co-ordinates to guide a user in the placement of the new small cell, with the device for guiding the user.