Roam Like Home Calling (Rogers)
When traveling to dial a local number where you are (not calling back home):
+ - country code - area code - phone number
Example: If you are on the beach in Cancun, Mexico and need to call to make dinner reservations. The restaurant's phone # is 998-555-1234. Mexico's country code it 52. So you would call: +52-998-555-1234. (To dial + most phones will require you to hold down the 0 until the + sign appears.)
To call home, you would dial as normal.
Premium Destinations
Going somewhere that is not travelled often, does have the infrastructure to support uninterrupted service, or traveling on a mode of transportation that sells their access? These would be "premium".
A lot of providers will send you a text message to let you know that you've entered into these areas. Most of these "premium" destinations won't be included in travel packages and you will have to pay a per minute, MB, or text (sending and receiving) charge to use the services.
For example, these are some of the charges I can expect if I use my phone on my next adventure:
CUBA
Internet access: 2G
Frequency: 900
Any calls: CAD $2.50/minute
Send text: CAD $0.75/text
Receive text: CAD $0.25/text
Data: CAD 1.50/MB with a minimum of 20 KB charge
CRUISE
Internet access: 900
Frequency: 1900
Any calls: CAD $4.00/minute
Send text: CAD $0.75/text
Receive text: CAD $0.25/text
Data: CAD $15.00/MB with a minimum of 20 KB charge (that's a minimum $300 charge!)
Don't forget the taxes and service fess that may be added on top.
If you don't need to use your phone then put it on airplane mode so you don't get charged for receiving calls or texts.
If you are cruising and in a port or near the ship, check your phone network before doing anything as it may still be connected to the cruise ship.
Now that I knew my provider, would the cruise actually allow me to use my phone if I need to? To find out this information I gave my cruise line a quick call. According to them:
You will be able to use your phone to make / receive calls as well as send / receive texts and serf the web. You will only be allowed to do so once the ship reaches international waters. Depending on your cellular provider you will see "NOR18", "901-108" or cellularatsea" as the carriers. Once connected you will be billed at international roaming rates and the charges will show on your monthly cellular bill from your home carrier. To get more information about the rates please contact your carrier.
Good to know that I can use it if I have to but I don't think I will...
UPDATE:
Since we had the Onboard Wi-Fi package we just used Whats App, Facebook, and email to keep in touch with everyone.