iMessage or FaceTime will not allow me to change to a different Apple ID

Hello chilliewil,

You've walked through great steps to try and change the Apple ID used with iMessage and FaceTime. Before trying to sign in to iMessage with your alternate Apple ID username, have you confirmed that FaceTime is signed out in Settings > FaceTime? If not, make sure you're signed out of FaceTime before trying to sign back in to iMessage with the desired Apple ID.

If you continue to have issues after signing out of both iMessage and FaceTime or you're already signed out of both features, restart your iPhone using the steps listed below. For reference you can also find the steps in the following article.

1. "Press and hold either volume button and the side button until the power-off slider appears.
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo."

Restart your iPhone

Also, is the secondary Apple ID you're attempting to sign in to a different account, or is it an alias to your existing Apple ID?

Have a great day!

Did you try restarting the device before trying to sign back in?

I have the same issue, and I'm using a different Apple Id. I've had this configuration for ages, it just stopped working recently.

On the iPhone 13 Pro, when I select "user other Apple ID" , it does not give me a prompt to enter another appleID, it just activates the main one.

I can log into the appleid account I want to use on a computer, and everything looks fine.

It started recently, but a few days ago I got auto logged out of all devices for that secondary AppleID account and had to log back in. Looks like not only did it not log back in iMessage , but I am now blocked from logging in.

yes, of course, signed out Facetime and Messages on all devices where it was signed in

I bought and Apple iPhone 13 and have the same problem. "Use Other Apple ID" does not seem to work. And yes, I signed out of facetime on all devices and turned the phone off and restarted it.

Have you signed out of FaceTime before trying to sign in?

I have same problem as chilliewil and I tried all tips you mentioned and still not work for me. :(

yes, actually turned off all other devices excet the IPh0Ne ...