When visiting Koh Samui, staying connected is easy thanks to the well-developed GSM network, which provides good mobile coverage across the island. For cost-effective international calls and data access, consider purchasing a local SIM card upon arrival. Most resorts, restaurants, cafés, and shopping centers offer free Wi-Fi, allowing you to stay connected without hassle. If you need internet access on the go, internet cafes are available, charging a nominal fee for usage.For getting around, public transport is primarily provided by songthaews, which are pickup trucks with seating. They operate on fixed routes during the day, making them a convenient option for exploring the island. After 6 PM, songthaews function as taxis, and it's advisable to negotiate fares before your ride. Taxis are also available, but they often do not use meters, so discussing the fare beforehand is essential.Additionally, remember that tap water is not potable, so it's best to drink bottled water and use it for brushing your teeth. Ice in restaurants is typically made from purified water, ensuring it's safe to consume. If you plan to rent a motorbike, be cautious, as they are not insured, and wearing a helmet is highly recommended. With these tips, you can enjoy a smooth and enjoyable visit to Koh Samui.