The choke ring antenna for GNSS applications has an important role in multipath rejection but in many cases is inaccessible due to cost. A low-cost antenna is proposed, designed with filament polylactic acid and aluminum foil, and another with copper adhesive tape and achieve the electrical parameters performances. A single-frequency L1 GNSS and a dual-frequency L1/L5 GNSS smartphones record a trajectory in static modes on the proposed antenna to evaluate its behavior in harsh urban multipath scenarios. As a result, the smartphone GNSS antenna radiation patterns are modified and more directive, increasing the gain. The copper and the aluminum adhesive reject the multipath, avoiding the contamination of noise on the GNSS signal; however, the error in positioning of the trajectory is minor with copper. The implementation of a cost-effective choke ring antenna is viable using reflectors for GNSS applications, through the radiation pattern modification to protect from spoofing signals increasing the smartphone GNSS antenna gain.