Muscat: Expect excellent 4G and 5G coverage from major carriers across the capital, including key areas like Muttrah, Al Khuwair, and Qurum. Connectivity is strong in major tourist sites like the Sultan Qaboos Grand Mosque and the Muttrah Souq. While signal is reliable inside modern hotels and malls, some older, thick-walled buildings in Old Muscat may have weaker indoor reception.

Salalah: The city center has reliable 4G coverage, with expanding 5G services. You'll find a strong signal at popular spots like Al Baleed Archaeological Park and along the city's beaches. During the peak Khareef (monsoon) season, networks can experience some congestion due to high visitor numbers, but service generally remains stable. Signal strength will drop significantly when venturing into the surrounding mountains or desert.

Nizwa: Strong 4G coverage is standard throughout the town. Tourist hotspots such as the historic Nizwa Fort and the bustling souq have excellent connectivity. Indoor signal might be slightly reduced within the fort's thick mudbrick walls or the deeper, covered sections of the souq, but it remains functional. Service becomes patchy to non-existent when driving into the nearby Hajar Mountains, so downloading offline maps is advised.

Sohar: As a major industrial port city, Sohar boasts comprehensive 4G and growing 5G network coverage. You will find a stable and fast connection throughout the city center, along the corniche, and in commercial areas. Indoor coverage in malls and modern buildings is consistently strong, ensuring reliable performance for all your needs.

Sur: This coastal city offers good 4G coverage, especially along the Corniche and around key sites like the traditional dhow factory. While service within the town is dependable, be prepared for intermittent to no signal when visiting nearby natural attractions like Wadi Shab or the Ras al Jinz Turtle Reserve, particularly deep within the valleys or in more remote coastal areas.

Major Highways (Routes 1, 15, 31): The Batinah Expressway (Route 1) connecting Muscat towards the UAE border offers generally consistent 4G/5G service. Similarly, routes to key inland cities like Nizwa and Sur (e.g., Route 15) are well-covered. The critical exception is Route 31 to Salalah; this long desert highway has extensive dead zones often lasting over an hour of driving, particularly between Haima and Thumrait.

Al Hajar Mountains: Connectivity is good in towns at the foot of the mountains like Nizwa, but service becomes intermittent to non-existent as you ascend into the ranges. On the popular roads to Jebel Akhdar and Jebel Shams, expect frequent signal loss, especially in deep wadis and on high mountain passes. Downloading offline maps is essential.

Rub' al Khali and Sharqiya Sands: These vast desert regions are almost entirely without mobile coverage. While some tourist camps on the edge of the Sharqiya Sands provide local Wi-Fi, do not expect any cellular signal once you venture into the dunes. The Rub' al Khali (Empty Quarter) is a complete dead zone where a satellite phone is required for communication.

Musandam Peninsula: Due to its rugged, fjord-like terrain, coverage in Musandam is concentrated in the main town of Khasab and along some parts of the coastal road. Service is unreliable to absent during dhow cruises into the fjords and on remote mountain tracks away from the towns.

Highway Tunnels: Most modern tunnels on expressways around Muscat may maintain a signal thanks to repeaters. However, in more remote or mountainous areas, you should expect service to drop upon entry and resume upon exiting the tunnel.