Log into messages and FaceTime

Re: Can’t log in to messages or FaceTime

You need an Apple ID and Apple ID password in order to log-in.

Check you are correctly signed in (to your device) with your Apple ID:

See how to: Sign in with your Apple ID - Apple Support

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Then see Apple support's online article:

If you can’t turn on or sign in to iMessage or FaceTime on your iPhone - Apple Support

Eg: Amongst other tips, says:

What you need before you sign in

• Make sure that you’re connected to a cellular data or Wi-Fi network. 
• Make sure that your device has the latest version of iOS or iPadOS.
• Make sure that your time zone is set correctly. Go to Settings > General > Date & Time.

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If needed: More info. / support / contact options etc.

Messages Support website: Messages for iPhone, iPad, Apple Watch, and Mac - Official Apple Support

and

FaceTime Support website: FaceTime - Official Apple Support