Hello Chriswmwong,
Welcome to the community!
When dialling or texting international numbers, we must first include the International dialling prefix (IDP), followed by the Country calling code, followed by the phone number. The IDP is varies by country (see here). In Canada, the IDP is 011. Since the IDPs vary by country, the International dialling prefix can be replaced by the plus symbol, +.
So the proper international texting format is + followed by Country Calling Code followed by Area Code followed by phone number.
OR
011 followed by Country Calling Code followed by Area Code followed by phone number.
Does your Country destination have area codes with preceding zeros? Some countries (ie Ireland) have zeros preceding their area codes which are used in Country, however are not included when using the international dialling/texting format (see here).
Hope this helps 😀
Cheers
