The Gulf Countries (UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, and Oman) are the front runner in the 5G Race. They started to think of 5G as early as Mid-2019.
Use Cases: The main initial two uses cases are eMBB (Mobile) and FWA (Fixed Wireless Access).
5G Spectrum Band: The 5G Spectrum Auction is in two bands 3500MHz band (C band) and 2600MHz (However some operators preferred to continue to use this band for LTE only like Etisalat UAE).
As per Analysys Mayson and GSMA, 5G commercial services availability and frequency bands deployed for 5G in the Gulf countries (as of January 2021)