HTC One User Manual page 124

124 Messages
3. Tap , and then select multiple recipients.
4. Tap OK on the Group Messaging dialog box.
5. Tap the button below the To field, and then select how you want to
send the group message.
Individual
Messages
Group
Conversations
6. Tap the box that says Add text, then enter your message.
7. Tap .
Your message will be sent to the recipients as
individual text message. Your recipients will not
see anyone on the list and can reply only to you.
Similar to a group chat, sending a group MMS
lets your recipients join the conversation you've
started. HTC One also organizes message
replies in a single conversation thread. If this is
your first time to send a group MMS, you may
need to enter your mobile phone number.