Mobile phone charging has evolved rapidly, driven largely by two key technologies: the PI chip and the GaN chip.PI chips were the gold standard for Apple and Samsung chargers. These silicon-based chips excelled in safety and stability, managing power delivery to prevent overheating. GaN chip is a semiconductor material that conducts electricity more efficiently than silicon.It allows chargers to handle higher voltages with less heat, enabling significant size reductions. Huawei and Samsung utilized GaN early to achieve high-wattage speeds (like 66W or 45W) without increasing charger size. Globe Dlight prefer to choose these two quality chips to produce phone chargers from 18W to 120W to make sure safe performance, ultra-fast charging speed and compact design.