Is it bad to have the iPhone 13's mmWave window covered up with a case? Does holding it reduce signal strength for the high capacity 5G? : r/iphonehelp
iPhone 13 mmWave 5G support limited to US models | AppleInsider
Use 5G with your iPhone - Apple Support
Korištenje 5G mreže na iPhone uređaju - Apple Podrška (HR)