Optus 3G single band service is part of the Optus Network and refers to 3G 2100MHz coverage. You will require a 3G 2100MHz compatible device to access the 3G single band coverage. A number of factors may affect coverage including location and demand on the network. Outside the 3G single band area, you will require a device capable of accessing GSM 900MHz. When within a 3G single band coverage area, your call or data session may also access the GSM/GPRS network. 2. Optus prepares coverage maps using the latest available data, tools and techniques to map Optus mobile coverage as accurately as possible. However as with any network based on radio technology, handset quality or local conditions may prevent or interfere with mobile reception within coverage areas, for example, inside concrete buildings, lift wells, basements, tunnels and road cuttings. High rise buildings may also suffer degradation of service. These maps are not an indication of in-building coverage. 3. Optus’ coverage maps may show planned rollout, which is indicated on the map. These predictions are based on rollout schedules available at the time of publication and may be subject to change without notice as circumstances require.

Optus 3G dual band service is part of the Optus Network and refers to 3G 2100MHz/900MHz coverage. You will require an 3G 2100Mhz/900Mhz compatible device to access the 3G dual band coverage. A number of factors may affect coverage including location, demand on the network and use of external antenna. When within a 3G dual band coverage area, your call or data session may also access the GSM/GPRS network. 2. Optus prepares coverage maps using the latest available data, tools and techniques to map Optus mobile coverage as accurately as possible. However as with any network based on radio technology, handset quality or local conditions may prevent or interfere with mobile reception within coverage areas, for example, inside concrete buildings, lift wells, basements, tunnels and road cuttings. High rise buildings may also suffer degradation of service. These maps are not an indication of in-building coverage. 3. Optus’ coverage maps may show planned rollout, which is indicated on the map. These predictions are based on rollout schedules available at the time of publication and may be subject to change without notice as circumstances require.

Optus 4G service is part of the Optus Network and refers to 4G 1800Mhz coverage. You will require a 4G 1800MHz compatible device to access 4G coverage. Outside 4G coverage areas, your device will access the 3G Dual Band network coverage. A number of factors may affect coverage including location, demand on the network and use of external antenna. When within a 4G coverage area, your call or data session may also access the 3G Dual Band network. 2. Optus prepares coverage maps using the latest available data, tools and techniques to map Optus mobile coverage as accurately as possible. However as with any network based on radio technology, handset quality or local conditions may prevent or interfere with mobile reception within coverage areas, for example, inside concrete buildings, lift wells, basements, tunnels and road cuttings. High rise buildings may also suffer degradation of service. These maps are not an indication of in-building coverage. 3. Optus’ coverage maps may show planned rollout, which is indicated on the map. These predictions are based on rollout schedules available at the time of publication and may be subject to change without notice as circumstances require.