We found the global landmarks with no cell service — is your next trip on the list?

Our research 

Our team looked at cell service data from major network providers in Australia, Canada, Italy, Japan, Thailand, Turkey, the UK, the US, and Vietnam. Specifically, we looked at coverage for popular tourist destinations outside of urban centers — national parks, wildlife reserves, picturesque islands, and other beauty spots. 

For each country reviewed, we focused on the three largest network providers for the region because these companies are likely to have the best and more widespread infrastructure. Many other providers operate within these regions, of course, but this “big three” approach helps us paint a pretty accurate picture of overall signal quality.

The results

What did we learn from our research? Many of these destinations, visited by thousands or even millions of tourists each year, have no cell coverage whatsoever. Whether you’re sailing down tranquil Australian rivers or exploring vast crater caves in Vietnam, you’ll be doing so offline. 

If you plan to travel this year, it’s possible that you’ll be visiting at least one of these places — let’s take them one country at a time. 

Australia

Golden beaches, surf-worthy waves, and unreasonably large spiders — we’re starting down under! For our Australian research, we looked at Optus, Telstra, and Vodafone, three of the country’s biggest telecoms companies. Cell signal remains strong in many coastal regions, and especially in towns and cities, but it drops off a cliff as you head inland.

Take the Daintree Rainforest, for example. As one of the world’s oldest rainforests, Daintree receives hundreds of thousands of visitors each year. In this ancient woodland you can enjoy river cruises, night safaris, and ziplining — but good luck getting online! Just like Purnululu National Park (with its striking beehive-shaped sandstone formations) and the canyon pools of Karijini National Park, these landmarks have little to no cell service. Here are all the locations with limited or no coverage:

• Daintree Rainforest

• Gibb River Road

• Hinchinbrook Island (along the Thorsborne Trail)

• Karijini National Park 

• Lord Howe Island

• Mungo National Park (around the Walls of China)

• Purnululu National Park (near the Bungle Bungles)

• Munga-Thirri National Park (formerly the Simpson Desert National Park)

• Southwest National Park (in the Melaleuca area)

• Walls of Jerusalem National Park

Canada

When we put mobile providers Bell, Rogers, and Telus under the microscope, we found that some of Canada’s most-visited rural attractions have no coverage for mobile devices. Banff National Park is one example — if you’re one of the millions of visitors flocking to see its glacial lakes and snow-capped peaks in 2026, forget about going live on Instagram while you’re there (probably not a bad thing, let’s be real). Neighboring Jasper National Park is no different, and this pattern extends across the nation, with Pacific Rim National Park Reserve also entirely without cell reception. Below is the full list of the areas we investigated:

• Auyuittuq National Park, NU

• Banff National Park, AB

• Grasslands National Park, SK

• Gwaii Haanas National Park Reserve and Haida Heritage Site, BC

• Ivvavik National Park, YT

• Jasper National Park, AB

• Kluane National Park and Reserve, YT

• Mingan Archipelago National Park Reserve, QC

• Mount Assiniboine Provincial Park, BC

• Naats'ihch'oh National Park Reserve, NWT

• Nahanni National Park Reserve, NWT

• Pacific Rim National Park Reserve, BC

• Prince Albert National Park, SK

• Pukaskwa National Park, ON

• Quetico Provincial Park, ON

• Riding Mountain National Park, MB

• Sirmilik National Park, NU

• Spatsizi Plateau Wilderness Provincial Park, BC

• Tatshenshini-Alsek Provincial Park, BC

• Thaidene Nene National Park Reserve, NWT

• Tuktut Nogait National Park, NWT

• Ukkusiksalik National Park, NU

• Vuntut National Park, YT

• Wabakimi Provincial Park, ON

• Wapusk National Park, MB

• Willmore Wilderness Park, AB

• Wood Buffalo National Park, AB (also in NWT)

• Woodland Caribou Provincial Park, ON

• Yoho National Park, BC

Italy

Let’s turn to Italy, where we reviewed mobile data from TIM, Vodafone, and Windtre. Once again, as you leave the bustling cities behind, your cell service — much like the noise of a crowded Roman street — fades away. Fancy a trip to Gran Paradiso National Park, Italy's oldest national park? This wonderland of glaciers, alpine meadows, and roaming ibex is well worth visiting, but make sure to download your maps for offline use before you visit! Sardinia is in the same boat — the tens of thousands of tourists hiking around Gennargentu National Park, in the island's rugged, mountainous interior, do so without cell coverage. None of the locations below have reliable network access, according to our data:

• Alta Via 4 (certain remote sections)

• Dolomiti Friulane 

• Gennargentu National Park

• Gran Paradiso National Park

• Lunigiana (around the Apennine Mountains)

• Ortles-Cevedale

• Palmarola Island

• Parco Nazionale del Pollino

• Supramonte (especially Gola di Gorropu)

• Val Travenanzes 

Japan

Japan has a well-earned reputation for being on the cutting edge of technology, but even its mobile networks have their limits. When we reviewed the coverage data from NTT Docomo, KDDI, and Y!Mobile, we found the same pattern as everywhere else — when you go rural, the bars go down. Mount Fuji is one of the most photographed locations in Japan, but if you put away the camera and start to climb the mountain itself, your cell service plummets. The same applies to the pristine valley of Kamikōchi, the cedar forests of Yakushima Island, and many other tourist magnets across the country:

• Daisetsuzan National Park

• Kamikochi Valley

• Kuju Mountain Range

• Mount Fuji (above 5th Station)

• Nakasendo Trail (certain mountain sections)

• Northern Okinawa (Yanbaru Forest)

• Shin-etsu Trail

• Shiretoko National Park

• Southern Japanese Alps (Minami Alps)

• Yakushima Island

Thailand

Boasting some of Southeast Asia's most spectacular landscapes, Thailand is a country that rewards an adventurous traveler willing to head into its remote reaches. Less rewarding is the coverage offered by AIS, True Move, and DTAC — many of the landmarks tourists seek out each year have next to no mobile reception. 

Exploring Khao Yai National Park? The wild elephants that live there are a lot easier to find decent phone service. It’s the same story in Erawan National Park, where you can see breathtakingly beautiful tiered waterfalls but won’t have enough signal to message the family group chat (“OMG check out these breathtakingly beautiful tiered waterfalls!”). If you plan to visit any of the following locations, be ready for the internet-free experience:

• Doi Inthanon National Park (on certain deeper trails)

• Elephant Nature Park

• Erawan National Park (around the upper falls)

• Khao Sok National Park

• Khao Yai National Park (in the backcountry areas)

• Koh Lipe (in the outer areas)

• Koh Phayam

• Mae Hong Son Loop (on some remote sections)

• Thi Lo Su Waterfall

• Thungyai-Huai Kha Khaeng Wildlife Sanctuaries

Turkey

Welcome to Turkey — where East meets West, ancient meets modern, and you meet coffee so thick and delicious you think you accidentally ordered espresso-flavored pudding. For this beautiful crossroads nation we reviewed the coverage of Türk Telekom, Vodafone, and Turkcell. You’ll never guess what we found — or if you read the rest of this article, then… Sure, you can probably guess exactly what we found. While signal is dependable in major cities like Istanbul and Ankara, it’s anything but around Turkey’s popular rural landmarks. 

Whether you’re following the Lycian Way along its 500 kilometers of Mediterranean coastline or climbing the volcanic slopes of Mount Ararat in the east, don’t hold your breath for reliable cell service. The same goes for all the locations below:  

• Ambaralan Village

• Cehennem Deresi Canyon 

• Dereova Waterfall 

• Kaçkar Mountains National Park

• Lycian Way 

• Mount Ararat 

• Munzur Valley National Park

• Taurus Mountains (in certain deeper valleys)

• Bakir Koylar

• Yenikuyu Highlands 

UK

Britain may have invented the telephone, but you wouldn't always know it from the signal strength in its remote corners. Our look at EE, Vodafone, and Three yielded some all-too-familiar results. 

In Wales, the trails leading up Snowdon — or Yr Wyddfa in Welsh — offer some of the most dramatic scenery in the UK, but hikers making the ascent via the popular Pen y Pass route can say “Hwyl fawr!” (Goodbye!) to cell service while they do so. Over in the Lake District, it’s the same old story, especially around the Buttermere Valley. Think you’ll be better off in Scotland? Naw, ye willnae! From the western Isle of Jura to far distant Shetland, signal is more elusive than a wild haggis. Here are some of the most popular service dead zones we found across the UK:

• Brecon Beacons

• Buttermere Valley

• Cheviot Hills 

• Fisherfield Six 

• Jura (around the island’s interior)

• Knoydart Peninsula

• Lairig Ghru

• Snowdonia

• Snowdon (along Pen y Pass)

• Harris (again, around the island’s interior)

US

While coverage is extensive across the US’s cities and suburbs, America's most iconic natural landmarks are mostly beyond the reach of T-Mobile, AT&T, and Verizon. The Grand Canyon? Low to no signal. Niagara Falls? Let’s just say you won’t be making any Niagara calls.

It’s not just specific locales, either. A huge portion of California’s sun-washed coastline known as Big Sur — a spectacular route for road trips and surfing getaways — is one big service dead zone. That’s less of a problem when you’re riding waves, but you’ll miss your internet connection if you’re checking your map app for directions or trying to search for local restaurants. Check out our full list of service-free beauty spots in the US:

• Absaroka-Beartooth Wilderness, MT/WY

• Adirondack Park, NY

• Badlands National Park, SD

• Big Sur, CA

• Boundary Waters Canoe Area Wilderness, MN

• Bryce Canyon National Park, UT 

• Chiricahua National Monument, AZ

• Crater Lake National Park, OR

• Death Valley National Park, CA/NV

• Denali National Park and Preserve, AK

• Everglades National Park, FL

• Gates of the Arctic National Park and Preserve, AK

• Glacier National Park, MT

• Grand Canyon National Park, AZ

• Great Basin National Park, NV

• Great Sand Dunes, CO (around Medano Pass and the visitor center)

• Haleakalā National Park, HI

• Hearst Castle, CA (near the visitor center) 

• Isle Royale National Park, MI

• Kenai Fjords National Park, AK

• Lucy the Elephant, NJ

• McWay Falls, CA 

• Mystery Spot, CA

• Niagara Falls, NY (specifically Prospect Point, on the US side) 

• North Cascades National Park, WA

• Organ Pipe Cactus National Monument, AZ

• Jockey’s Ridge State Park, NC 

• Seven Mile Bridge, FL

• Redwood National and State Parks, CA

• Salton Sea, CA (along Bombay Beach boardwalk)

• Salvation Mountain, CA

• Selway-Bitterroot Wilderness, ID/MT

• Valley of Fire State Park, NV 

• Voyageurs National Park, MN

• Zion National Park, UT (around Canyon Junction and the visitor center)

Vietnam

People visit Vietnam for all sorts of reasons — thrilling motorbike routes, amazing food, and gorgeous, mist-shrouded landscapes. Many of the country’s most iconic sightseeing locations lie beyond the bustling cities, however, and you know what that means — no cell service, at least from Viettel, Vinaphone, or Mobifone. 

Sơn Đoòng Cave is a huge draw for visitors. While you might not be surprised to learn that a cave system doesn’t have great mobile reception, the surrounding area (above ground, crucially) is little better. In the central highlands, Bạch Mã National Park feels all the more isolated due to its complete lack of network coverage. Traveling south to Cát Tiên National Park? That’s a great plan! It’s one of Vietnam's last great lowland rainforests, home to gibbons, crocodiles, and phones that don’t connect to the internet. You should absolutely visit this magical country, but just bear in mind that the following landmarks are all without service:

• Bach Ma National Park (along the Summit Trail)

• Bau Sau 

• Bay Canh Island 

• Kho Muong Village 

• Nam Cat Tien (along the Gibbon Trek)

• Son Doong Cave 

• Ta Xua (around the Dinosaur Spine)

• Tu San Alley 

• Y Ty 

• Yok Don National Park

Staying connected on your travels

Wherever you go in the world, from techy California to the ancient forests of Japan, signal isn’t guaranteed. As a rule, though, you can be pretty confident that cities, towns, and larger villages will always have reasonably reliable coverage from regional mobile providers. And just because you can’t get online during your jungle excursion doesn’t mean you can’t upload photos of the adventure when you get back into town!

The easiest way to do that is with an eSIM app, like Saily. Once you download an eSIM app, you can pick a plan with the data and duration that suits you best and instantly connect to local networks in the country you’re visiting. If you set up your Saily eSIM in advance, you can get online as soon as your plane touches down.

Sometimes the lack of signal makes the world’s rugged, natural beauty even more peaceful and immersive — but when you can get online, do so with Saily.