Isra123 wrote:
Do not bother to get a SIM card for only 4 days.
Download WhatsApp. on your phone and use WiFi only for sending messages/data/email. The SL allows free local calls and I think also free calls to the US. I know the Castillo does.
WiFi is available at many hotels and restaurants. A good strong signal is available at Cafe Miel round the corner from SL on Ave. 9. Just have a cup of coffee and ask them to give you their password.
I don't just have a SIM card. I have a complete phone that has a Costa Rican number. I keep my CR WhatsApp on it.
I can WhatsApp on it over WiFi when I am back in the US, but it doesn't blow up my US phone.