Qualcomm Intership interview questions

he called me for a 30-mins Asked me a few questions related to the 4G and 5G then asked me about the MIMO technology and why they used it and how to use the MIMO with different ways. Then he asked me about modem systems and if I dealt with them before or not

Firstly, there was a phone call from the manager to explain the JD and later setup an technical interview which was mostly based to reviewing your previous experience in that field.