Why Can't I Send Text Messages From the US to the UK?

The UK telecom providers blocked international SMS/MMS messages from non-UK numbers on June 1, 2023, because carrier providers in the UK think long codes for Application-To-Person (A2P) SMS abused Person-To-Person (P2P).

These long codes are standard 10-digit phone numbers often used for person-to-person communication. However, in the UK, long codes are banned for business and marketing purposes due to concerns over spam and security.

To understand long codes and short codes better, follow the examples below.
 

• Short Code Number: 85005
• Long Code Number: +44 7911 123456

Note: A2P is for automated messages from businesses, while P2P is for personal messages between individuals.

You can text a UK number from the US using OTT(over-the-top) messaging applications (e.g., WhatsApp, Viber), short code numbers, or virtual UK/US phone numbers from a virtual number provider that works over the internet.

The ban in the UK is strictly for long code numbers, but it still allows texts when a short code number is used. Getting a short code number or a local UK phone number in the US from conventional phone service can be troublesome, so opting for a virtual number is a better option.

Using a UK/US Virtual number is a reliable and cost-effective way to text a UK number from the US. These numbers work the same as conventional numbers and operate over the internet. As these numbers are recognized by UK carriers, virtual phone numbers help your messages get delivered successfully.

Whether physical or virtual, using a virtual UK phone number allows you to send SMS directly to your contacts. You can get these numbers from VoIP phone system providers like Calilio.

Using a UK/US Virtual number is a reliable and cost-effective way to text a UK number from the US. These numbers work the same as conventional numbers and operate over the internet. As these numbers are recognized by UK carriers, virtual phone numbers help your messages get delivered successfully.

Whether physical or virtual, using a virtual UK phone number allows you to send SMS directly to your contacts. You can get these numbers from VoIP phone system providers like Calilio.

OTT (over-the-top) messaging services like WhatsApp, Telegram, Messenger, etc., allow for international messaging with end-to-end Internet encryption. Texting requires you and the recipient to be on the same OTT messaging platform.

Texting with these OTT apps doesn’t violate the A2P SMS restrictions and allows you to send messages to UK recipients. However, you cannot send messages directly to the carrier phone number using OTT platforms, and the recipient must use the same OTT messaging service to connect and communicate with you.

As the UK has banned receiving text messages with long codes, you must be careful to comply with the rules to avoid having your messages banned. Here are some best practices to follow when texting the UK from the US.
 

Texting a UK number from the US is simple if you use the right service and follow the UK rules. The UK doesn’t allow text from long code numbers; instead, use a shortcode or virtual number for better delivery and compliance. While shortcodes work well for ending bulk messages, virtual numbers help you connect with your recipients as if you are in the UK.

By following best practices, such as obtaining approval and including opt-out options, you can ensure that your messages reach UK recipients legally and effectively. For individual purposes or businesses looking for a reliable way to text UK numbers, consider using Calilio. Sign up today to get your UK number and connect with your clients.

You can no longer use long international codes to text to the UK. Instead, you can either use a virtual UK number from a provider like Calilio or an over-the-top (OTT) messaging app like WhatsApp, Telegram, etc.

To text a +44 UK number, you must use the correct phone number format with the +44 country code. You must use a domestic UK long code, an alphanumeric Sender ID, or a short code to text a UK number.

Unlike traditional SMS services, iMessage uses data. Therefore, you can iMessage a UK number without worrying about the restrictions on international long codes.

You must use the correct country code and phone number format to text an international number from the US. If you face SMS blocking, you can consider using virtual mobile numbers or OTT messaging services.