What is the legal status of using a hand-held mobile phone while operating a motor vehicle in Angola?

1. It is strictly prohibited while driving and sanctioned with a fine of 60 to 300 UCF; only hands-free earpiece or loudspeaker systems are allowed
2. It is permitted if driving at speeds under 30 km/h in urban traffic
3. It is permitted if the call lasts less than two minutes
4. It is permitted on motorways where roads are straight and wide