Many people welcome the New Year by sending SMS messages to friends and loved ones. On Windows Phone we have the option of sending group messages, and many of us may be tempted to send the same message to a group of friends when the clock strikes 12.
LandofTechnology however warns that if you try and send a SMS message more than 160 characters long to multiple people you may run into SMS error 225, which is short for Service Denied.
The reason is that Windows Phone automatically convert group SMS messages to MMS messages, and it seems making them more than 160 characters can trigger this network fault (likely an anti-spam measure).
Their advice is simply to keep your message less than 160 characters and spend more time partying and less time on your phone.
Read more at LandofTechnology here.