ByteSIM is headquartered in Hong Kong and was founded by Sunny Wong and Wilming Chou. We are committed to providing comprehensive solutions for cross-border travel communication needs. Currently, ByteSIM eSIM products have covered more than 200 countries and regions around the world, including Greater China, Japan, Korea, Singapore, Malaysia, Thailand, and the United States and Canada, and have covered major popular travel destinations around the world.

Easy. Online. No Retail Stores, No Inflated Prices. Buy unlimited data plans that fits your travel needs, Stay connected in every corner of the world with eSIM.

Short for embedded SIM, an eSIM is an electronic SIM that allows you to activate a mobile service plan from a carrier without having to use a physical SIM card. The profile on an eSIM is rewritable, meaning you can decide to add, remove mobile service plan easily-connecting handset / device with eSIM to a mobile operator network can be done in minutes.