YES
GSM phones will only work in Trinidad and Tobago if they have a SIM card available to use with it, especially for international phone calls.
The phone number of the Trinidad Branch Library is: 707-677-0227.
The phone number of the Trinidad Museum Society is: 707-677-3883.
The phone number of the Trinidad History Museum is: 719-846-7217.
The phone number of the Bloom House is: 719-846-7217.
The phone number of the Louden-Henritze Archaeology is: 719-846-5508.
1 800 828-8144
The phone number of the Arthur Roy Mitchell Memorial is: 719-846-4224.
Trinidad & Tobago is in international country code +1, area code 868.From other countries within country code +1 (North America = USA, Canada, and a variety of Caribbean and nearby islands), you dial a call to Trinidad & Tobago as if it were a domestic call: for example, 1-868-555-0132. However, international call charges will still apply.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but many countries use different prefixes.)
To ask someone for their phone number, simply say something like, "Can I have your phone number so we can stay in touch?"
To politely ask for someone's phone number, you can say something like, "Would you mind sharing your phone number with me?"
You can politely ask someone for their phone number by saying something like, "Would you be comfortable sharing your phone number with me?"