Locale Summary |
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Locale name |
United Kingdom |
ISO code |
GB |
Region |
Europe |
Mobile country code |
234, 235 |
Dialing code |
+44 |
Guidelines |
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Two-way SMS supported |
Yes |
Number portability available |
Yes |
Twilio concatenated message support |
Yes* |
Message length |
Inbound: GSM 3.38=160, Unicode=70 Outbound: GSM 3.38=160, Unicode=70 |
Twilio MMS support |
Converted to SMS with embedded URL |
Sending SMS to landline numbers |
Twilio will not check whether the number is a landline and will attempt to send it to our carrier for delivery. Some carriers will convert the SMS into text-to-speech messages via voice calls. |
Compliance considerations |
SMS-to-voice functionality is in widespread use in the UK, and as a result, Twilio will not reject messages sent to landlines. Please be aware of this fact because it may not be the desired behavior for your application. If this is not the desired behavior, Twilio Support can help.
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