Often  our Cisco IP Phone  clients in Qatar receive an error , not exactly an error , but phone boots but hang on first screen , while displaying a circle with a dot .

You need a hard reset in such cases , that eventually erase flash storage inside phone . If you know normal reset , only change is , change code from 123456789*0# to 3491672850*# , Or read this post . https://www.iptinfo.com/?p=642

Good luck . You can always contact our support team . support@htsqatar.com