Best iPhone 5 pay-as-you-go (PAYG) nano-SIM options for travelers

The iPhone 5 is a true world phone, capable of running on LTE, DC-HSPA, and HSPA+ on carriers around the world. But having the right hardware is the easy part. Some carriers make it difficult if not impossible for travelers to find SIM cards and voice-and-data plans for pre-paid/pay-as-you-go (PAYG) access on the go.

Collected here are some of the best global options iMore and Mobile Nations have found to date. We'll be updating often, so bookmark this page and check back before you travel!