You can check your email or surf the Internet at all public libraries, many cafés and public parks, and most hotels. In addition, all of New York's subway stations are on target to have both Wi-Fi and mobile service; about 80 stations in Manhattan and Queens currently have it. The organization NYCwireless keeps track of free Wi-Fi hot spots in the New York area; the apps WiFi Finder (for Android devices) and Free Wi-Fi Finder (for iOS) can also help you track down hot spots.
NYCwireless. New York, New York, www.nycwireless.net.