Internet cafes exist but are not very common, although some cafes, such as Starbucks, and restaurants, such as Subway, provide free WiFi. Some of the major metro areas provide free WiFi zones, such as along Paseo de la Princesa in Old San Juan, but these tend to be slow and unreliable. There is no free WiFi at the primary airport, Luis Muñoz Marín International Airport (SJU). Most hotels provide wired or wireless (or both) internet for guests, either for free or a fee, however many motels do not. Puerto has continually strived to improve the Internet on the island.
See also International Telephone Calls
Puerto Rico has a modern cellular network. All the major US carriers are represented and are not roaming for US subscribers with nationwide plans. Sprint, AT&T, and T-Mobile have native coverage, while Verizon roams on their legacy network now operated by Claro. Other CDMA carriers also use Claro or Sprint. For non-US travelers, AT&T and T-Mobile are the GSM carriers, while Sprint and Claro are CDMA and probably not compatible with your phone.
The mail service in Puerto Rico is provided by the United States Postal Service. Local branches are abundant (there are more than five in the San Juan area alone) and operate on the same business hours as American post offices: Monday - Friday 8:30am to 5:30pm; Saturday 9am to 12pm. The rates and delivery times are the same as those in the mainland United States and all international rates are the same as mail originating in the United States.
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