Can I use my Twilio number for SMS?
Sending SMS Messages
Yes, if your phone number is SMS-enabled, you can use it to send SMS messages. In addition to United States and Canada, Twilio also provides Beta mobile phone numbers in several European countries including the UK, Sweden, Norway, Finland, Poland, and Belgium. You can send SMS messages from any of these numbers within the country and internationally.
SMS-enabled local phone numbers are available in Spain and the United Kingdom. These phone numbers are geographic numbers and can only be used to send messages domestically.
Receiving SMS Messages
Phone numbers in the United States and Canada as well as SMS-enabled mobile numbers in the UK, Sweden, Norway, Finland, Poland and Belgium can in most cases receive both domestic and international text messages. However, because it is the responsibility of the sending carrier to deliver the message to our network, we cannot guarantee delivery from all international carriers. We have seen increased issues with SMS messages not reaching Twilio when sent from mobile phones which are roaming internationally.
SMS-enabled local (also known as geographic) phone numbers in Spain and the UK can only receive SMS messages sent domestically. Messages sent from international phone numbers to these numbers will likely not be received.
Note that Twilio offers two types of SMS-enabled phone numbers in the United Kingdom. Local SMS-enabled phone numbers can only be used domestically within the UK, whereas mobile UK numbers can be used domestically and internationally.