Measuring the GSM signal available closest to you is one of the first steps when planning the installation of a GSM repeater. Each smartphone has the necessary to measure the available GSM signal. Let's see how to find this value.

Before installing the GSM repeater it is advisable to measure the available GSM signal. This measurement basically tells us where we will have to place the external antenna. In this article we will understand how to measure Gsm signal with iPhone.