If you’ve brought your laptop or tablet with you to Maui, you should have no problem checking email or connecting to the Internet. Most major hotels and resorts offer high-speed access in rooms or public areas. If you're staying at a small inn or bed-and-breakfast without Internet access, ask the proprietor for the nearest café or coffee shop with wireless access.
Most Maui hotels, restaurants, and tour companies have mobile-friendly websites. Reliable Internet access from your smartphone is available throughout the majority of Maui, but can be challenging in some rural areas.
The area code for Hawaii is 808. For local calls on Maui, you need to dial only the seven-digit number (not the 808 area code). If you are calling numbers on neighboring islands while on Maui, you will need to use "1–808," followed by the number.