Nothing
an object that gives light is visible when illuminated
It would be correct to say that they send messages to each other often. You could also say, they send messages to other people, often. It makes no sense to say they send messages to other.
'Send messages' in French is 'envoyer des messages'.
to send error messages to send control messages
It is best to call up your service provider so you could first determine whether the problem lies in your phone or in the network. Make sure you take notes if the messages send to certain phone number or they don't send them to any number at all.
a glass medium to send messages
Only moderator's have the option to send gray messages.
A heliograph uses a mirror to reflect sunlight to a distant observer. By moving the mirror, flashes of light can be used to send Morse code. The heliograph was a simple but highly effective instrument for instantaneous optical communication over 80km or more in the 19th century.
the telegraph.
Telegraph
send them on a phone
you can send email to a touch, and u can send texts to a phone but not to a touch
No you can not send video messages you can receive them but you have to go to a website to see them. I recently got one you can send regular text messages, picture messages, and voice messages, but in all honesty i think the phone is really nice.