Koh Chang Guide for Couples: The Quiet Side of Thailand

Koh Chang is Thailand’s best-kept secret for couples seeking a mix of rugged jungle adventure and pristine white-sand relaxation without the overwhelming crowds of Phuket. To make the most of the island, you’ll need a reliable data connection to navigate the steep coastal roads, book local boat tours, and stay in touch via WhatsApp. A local eSIM is the most cost-effective way to get online the moment you touch down in Bangkok or Trat.

Why Koh Chang is the Ultimate Couple’s Escape

While islands like Koh Samui have become heavily commercialised, Koh Chang (Elephant Island) retains a sense of wildness. Located in the Mu Ko Chang National Park near the Cambodian border, it is Thailand’s second-largest island but feels significantly more secluded. For Australians and Kiwis, it offers a refreshing change of pace from the standard tourist trail.

You won’t find high-rise resorts blocking the sunset here. Instead, you’ll find boutique bungalows tucked into the rainforest and candlelit dinners on the sand. Whether you are kayaking through mangroves or hiking to hidden waterfalls, the island demands a bit of exploration. This is where having a solid data connection becomes vital. While many resorts offer Wi-Fi, it often drops out the moment you leave the lobby. By using an AussieRoam eSIM, you can access local networks like TrueMove H, DTAC, and AIS on 5G or 4G, ensuring you aren't left stranded when trying to find a hidden viewpoint.

Staying Connected: Roaming vs. Local eSIM

Most Aussies and New Zealanders are used to the convenience of the Telstra International Day Pass or Optus daily roaming charges. However, these costs add up fast—often $10 a day just for the privilege of using your own data. Over a two-week honeymoon or anniversary trip, you’re looking at an extra $140 just for phone access.

Instead of paying the "roaming tax," savvy travellers see plans for a Thailand eSIM before they even leave Sydney or Auckland. You can install the digital SIM at the airport, and the moment your flight lands at Suvarnabhumi or Don Mueang, your phone connects to a local Thai tower.

Connectivity Comparison: Roaming vs. AussieRoam

Feature	Home Carrier Roaming	AussieRoam eSIM
Daily Cost	High ($5–$10 AUD/NZD)	Low, one-time purchase
Network	Restricted to partner	TrueMove H, DTAC, AIS
Setup	Automatic (but expensive)	Instant digital install
Data Limits	Often capped at 500MB/1GB	Up to 50GB or daily passes
Local Number	Your own (charges apply)	Data only (use WhatsApp)

Best Areas for Couples to Stay

Koh Chang is divided into several distinct beaches, each with a different vibe. Choosing the right one is key to your experience.

White Sand Beach (Hat Sai Khao)

This is the most developed part of the island. It’s perfect for couples who want convenience—plenty of restaurants, live music bars, and banks. The northern end of the beach is quieter and more romantic, while the south is bustling.

Klong Prao Beach

If you want space, this is it. The beach is massive, and because it’s broken up by a lagoon, it never feels crowded. It’s home to some of the island's best high-end resorts. It’s also centrally located, making it a great base for exploring the Klong Plu Waterfall.

Lonely Beach (Hat Tha Nam)

Don't let the name fool you. While it started as a backpacker haven, it now features several chic boutique stays. It’s the best spot for live music and a more "bohemian" romantic vibe. If you enjoyed our Koh Lipe Island Travel Guide: Thailand’s Hidden Paradise, you’ll find Lonely Beach has a similar, albeit larger, laid-back energy.

Top Things to Do in Koh Chang

1. Mu Ko Chang National Park Trekking: The interior of the island is dense rainforest. Hiring a guide for a jungle trek is a must. You’ll need GPS to find the meeting points, so ensure you’ve checked if your phone is compatible with an eSIM before heading into the bush.
2. Kayaking to Koh Man Nai: At low tide, you can kayak from Kai Bae Beach to the small uninhabited island of Koh Man Nai. It’s a great workout and offers incredible snorkelling.
3. Bang Bao Pier: A traditional stilt village built over the water. It’s now a hub for seafood restaurants and souvenir shops. It’s also where most diving and snorkelling boats depart.
4. Klong Plu Waterfall: A short hike leads to a large swimming hole. It’s refreshing after a day in the Thai sun.

If you love the combination of water and wilderness, you might also want to check out our Khao Sok National Park Guide: Jungle Treks and Lake Stays.

Network Coverage and Data Realities

Koh Chang is mountainous. The "big three" Thai carriers—AIS, TrueMove H, and DTAC—all have great coverage along the west coast where the main villages are. However, if you venture to the rugged East Coast or deep into the central jungle, signal can become spotty.

AussieRoam plans give you access to these local networks, which generally provide 5G in the main hubs and 4G in the smaller villages. Because these are data-only plans, you won't get a local Thai phone number. This isn't a problem for most modern travellers, as you can still make crystal-clear voice and video calls using WhatsApp, Messenger, or Viber over your data connection.

How Much Data Do You Need?

• Light Users (1GB - 3GB): Best for short stays (7-15 days) if you only need Google Maps and occasional messaging.
• Average Users (5GB - 10GB): Perfect for a 30-day trip. You can upload photos to Instagram and stream music while lounging on the beach.
• Power Users (20GB - 50GB): If you are working remotely or streaming Netflix in your bungalow, go for the higher-tier plans or a daily pass with a high threshold.

How to Install Your eSIM

Setting up your connection is simple. You don't need to find a 7-Eleven or fiddle with a physical SIM card tool. Follow this installation guide for a smooth setup.

For iPhone Users:

1. Go to Settings > Mobile Data.
2. Tap Add eSIM.
3. Scan the QR code provided by AussieRoam.
4. Label the new plan "Thailand" and set it as your secondary data source.
5. Turn on Data Roaming for the eSIM line (but keep it off for your home SIM!).

For Android Users:

1. Go to Settings > Connections > SIM Manager.
2. Select Add eSIM or Add Mobile Plan.
3. Scan the QR code.
4. Ensure the eSIM is selected for "Mobile Data."
5. Enable Data Roaming in the mobile network settings for the eSIM.

Navigating the Island

The roads on Koh Chang are notorious. They are incredibly steep and have hair-raising switchbacks, particularly the "Big Hill" between White Sand Beach and Klong Son. If you are renting a scooter, be extremely careful. Having Google Maps active on your handlebars is essential to anticipate sharp turns, but always keep your eyes on the road.

If you aren't confident on a bike, the local "Songthaews" (shared taxi trucks) run up and down the main west coast road. You can usually hail one down, and they have fixed prices between the main beaches.

The bottom line

Koh Chang offers a romantic, adventurous alternative to Thailand’s more crowded hubs. By skipping the expensive roaming fees from your home carrier and choosing to see plans for a local eSIM, you’ll have more money for sunset cocktails and private boat tours. Stay connected, stay safe, and enjoy the quiet side of Thailand.

FAQ

Does AussieRoam work all over Koh Chang?

Yes, our eSIMs connect to TrueMove H, DTAC, and AIS, which cover almost all of the west coast and the main villages on the east coast. Coverage may drop in deep jungle areas or remote hiking trails.

Can I use WhatsApp with a data-only eSIM?

Absolutely. Even though you don't get a local Thai phone number, your WhatsApp will function perfectly using your existing number. You can make calls and send texts as long as you have a data connection.

Is it better to buy a SIM at Bangkok airport or online?

Buying an eSIM online before you land is much easier. You avoid the queues at the airport kiosks and don't have to worry about losing your Australian or NZ physical SIM card while swapping them out.

What happens if I run out of data in Koh Chang?

With AussieRoam, you can easily top up your data through your account without needing to find a physical store. This ensures you never lose your GPS or messaging capabilities while exploring the island.

Do I need to turn off my Telstra or Optus SIM?

We recommend keeping your home SIM active for receiving SMS (like bank OTPs) but disabling "Data Roaming" on that specific line. Set your AussieRoam eSIM as the primary source for all mobile data to avoid unexpected charges.