Leliwa is an international company based in Gliwice. However, LELIWA is also Leliwa Telecom AB, based in Sweden. We provide you the highest quality services, according to the world standards in the field of communications technology, for all businesses and individuals interested in direct purchase of full knowledge in this field. In our offer you will find dozens of training courses on 5G, 4G, LTE/EPS, IMS/RCS, GSM, UMTS network planning, and others.