Wifi, Internet and Cellular Speeds on Koh Tao
Internet speeds on Koh Tao are generally very fast - as of August, 2025 the main service is from a underwater fiber line to Koh Phangan with a backup Microwave relay to Koh Phangan. Speeds get up to 700mbps down, 450ish up. These will vary depending on the service package, router/modem where you are at, how close you are to the Access Point or router etc. Getting an AIS SIM with a large data pool or unlimited data is a good backup plan for weak areas or if there is a power outage. You can purchase AIS SIMs on the island at: Technomania store on the down road, Cell Store Sairee by Factory Cafe in Sairee Order from Lazada for about 250-400 a month on promotion (depending on promotions etc). 5G cell service is available on Koh Tao. Wifi speeds at good Cafes and Restaurants are usually 100-400mbps up/down Speed & Connection Testing Tools A Better Speed Test App : ORB: https://orb.net Another Better Speeed Test Tool : this shows you more details l...