The solar cycle 24 will not be registered as the most intense of the last cycles. In fact, its intensity is roughly half of the previous cycle and the ionospheric effects experienced in this cycle have been far milder than originally expected, despite having several major ionospheric storms in this period, as the so‐called St. Patrick's Day's ionospheric storm. On the other hand, in this same period of time, the Galileo system has started the deployment phase and it started the In‐Orbit‐Validation campaign on 2013 with the first four full operational satellites, following the launch of a number of additional satellites allowing the declaration of Initial Services in December 2016 and targeting the Full Operational Capability by 2020. Thus, during this period of time, Galileo has been broadcasting the 3 Az coefficients needed to use the NeQuick G for correcting the ionospheric delay for single‐frequency users. In this work, the full analysis of the performance of the NeQuick G for the last solar cycle will be presented along with the detailed analysis of some of the most relevant ionospheric storms occurred during the very same period. In general, the NeQuick G presents around 50 cm better root mean square than the Global Positioning System broadcast model for all the period of study. As an internal measure of the goodness of the NeQuick G, the percentage of slant total electron content inside of target Galileo specification will also be analyzed. Plain Language Summary Galileo constellation is deploying, and at the current state, first tests can be done to monitor the quality of the signal and broadcast parameters. One of the most important broadcast parameters for mass market users are the ones related with the NeQuick G, the algorithm that allows you to correct the signal from ionosphere errors. In this paper, a study of the performance of the NeQuick G is presented and compared to the Global Positioning System one. Moreover, the performance of the navigation solution with Galileo, with the current reduced number of satellites, is compared to the Global Positioning System one. Key Points Performance of Galileo single‐frequency model since March 2013 till December 2016 is shown Comparison of performances for different ionospheric models is done. In general, Galileo single‐frequency model shows better performance than GPS model Positioning results performed with stand‐alone Galileo demonstrate that the Initial Open Service performance targets for Galileo Initial Services are met