AT&T has announced a new ‘Unlimited Day Pass’ plan launching today that allows iPad users to activate cellular coverage on a convenient, per-need basis. Here are the details. iPad users have convenient new cellular option with AT&T’s ‘Unlimited Day Pass’ The iPad has supported cellular connectivity since the very first model. But for a lot of iPad users, their limited need for cellular doesn’t always justify a monthly subscription plan. But today, AT&T is launching a convenient new iPad cellular option called Unlimited Day Pass. Unlimited Day pass costs $3 for 24 hours of unlimited wireless data connection on iPad. You need a cellular-equipped iPad that’s eSIM-capable. But if you have the right hardware, this new plan lets you easily sign up for cellular connectivity only on the occasions you really need it, on-demand. For example, you might sign up when your home Wi-Fi goes down, or you’re going on vacation, or some other situation where cellular becomes more important.…