The hot American summer began a few weeks ago. Millions are already heading out for road trips, hiking adventures, and scenic getaways. While these destinations promise unforgettable experiences, many hide a significant challenge that could leave travelers disconnected and potentially stranded: unreliable mobile service. A new study shines a light on which US states have the worst mobile phone coverage, urging holidaymakers to be prepared.
Traveling in the summer? Beware of mobile coverage dead zones
Casely, an online retailer specializing in phone accessories, conducted the research. The document aims to pinpoint where travelers might face connectivity challenges as the summer 2025 season peaks. Emily Stallings, co-founder of Casely, highlighted that poor mobile coverage isn’t just about missing social media updates. Those situations can impact crucial access to emergency services, GPS navigation, and essential booking platforms.
The study rigorously analyzed mobile coverage data from late 2024 through early 2025 across all US states. It combined factors like the percentage of land with no signal, average data speeds, carrier performance scores, and consumer complaint rates. From this data, the study placed the US states in a ranking of worst mobile phone coverage. Below you’ll find the ‘infamous’ top 3 of the ranking, which can be useful if you plan to travel.
Alaska tops the list for worst mobile phone coverage in the US
Unsurprisingly for many, Alaska takes the top spot as America’s worst state for mobile coverage for travelers. A staggering 92.44% of its vast landmass has absolutely no mobile signal. This led the state to reach a dismal mobile coverage score of 18.72. Even with Verizon Wireless as the dominant carrier, travelers in the Last Frontier face significant connectivity issues. “Alaska’s vast wilderness and remote terrain make it particularly challenging for mobile network infrastructure,” Stallings explained. She advises travelers to prepare for extended periods without signal, especially in national parks or remote areas.
Maine and Hawaii follow suit
Maine ranks as the second worst state for mobile coverage, with 46.7% of its land lacking signal. Its rural landscape creates technological challenges for carriers that result in notable dead zones. This could be particularly problematic for tourists exploring coastal areas and inland forests.
Rounding out the top three is Hawaii, which might surprise some, given its popular tourist appeal. Despite offering faster data speeds than Maine, a significant 54.08% of Hawaii’s land still lacks signal coverage. Stallings noted that Hawaii’s mountainous terrain and island geography create natural barriers for mobile signals. She warns visitors exploring remote beaches or hiking trails to expect connectivity issues.
These findings serve as a crucial reminder for anyone planning a summer adventure. While stunning scenery awaits, ensuring you have a plan for staying connected—or safely disconnected—is essential for both convenience and personal safety.
