Can I send a text to a friend's iPad if I use their email address as their Apple ID? I have an Amazon Fire smartphone.
Will the message get to them from my phone?
Yes, you can send a text message to your friend using your Amazon Fire, to their iPad, but only if they have an iPhone as well.
If they do, then your message will either go
SMS (Short Message Service), which is basically what you know as a text message, or
MMS (Multimedia Message Service), which is what gets sent when you send a photo to a friend with a text messaging app.
Your friend will need to have
iMessage set up on their iPad, and they will need to have an iPhone as well in order to receive
MMS messages from someone not on
The setting for this is actually in the iPhone's settings. It will not matter if you send it through an email address or a telephone number, if they do not have an iPhone, and you are not sending the text through
iMessage, their iPad will not get the message. If you had an iPhone or iPad or Mac with
iMessage on it, then you could in fact send text messages to one another via
iMessage, as those messages travel exclusively on Apple's network.
I do not know for sure, but I have a feeling that
MMS go through the Mobile Network Provider's system and only gets to Apple's
iMessage network when it goes from the Mobile Service to the iPhone, which then can reroute it to
iMessage and then to the devices linked to that iPhone.
No, you will have to have a device running either OSX or iOS for it to work, eg a MacBook, iMac, iPod touch, iPhone, or iPad to name a few. iMessage works on these platforms only. Other messages will either be sent as SMS or emails, depending on the client you are sending from and other unknown variables.