Q: After updated ios 9.1 for my iPad air 2, Facetime and iMessage almost doesn't work and cannot link with iMessage on my iPhone. Ple ... After updated ios 9.1 for my iPad air 2, Facetime and iMessage almost doesn't work and cannot link with iMessage on my iPhone. Please help, tks! more
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Nov 17, 2015 7:10 AM in response to ThuyTrucby joe_7399,★HelpfulHello ThuyTruc,
Thanks for using the Apple Support Communities!
From your post, it sounds like you are having a few different issues with FaceTime and iMessage. I am not exactly sure what you mean when you say FaceTime and iMessage almost do not work. Can you explain this situation further?
In the meantime, the following three articles have a lot of great information on troubleshooting FaceTime and iMessage on iOS devices.
Get help if you can't make or receive FaceTime calls - Apple Support
If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support
If you get an error when trying to activate iMessage or FaceTime - Apple Support
You also mention that messages are not showing on both of your iOS devices. To ensure this is set up properly between your iPad and iPhone, please read over the following instructions from the next article.
SMS
With Continuity, all the SMS and MMS text messages that you send and receive on your iPhone can also appear on your Mac, iPad, and iPod touch. You can also reply to your contacts from whichever device is closest to you, including your iPad or Mac.
You can start a conversation in the Messages app or click a phone number in Safari, Contacts, or Calendar.
Set up SMS and MMS with Continuity
- You need iOS 8 or later on your iOS devices and OS X Yosemite or later on your Mac.
- Sign in to iMessage with the same Apple ID on your iPhone, your other iOS devices, and your Mac.
- On your iPhone, go to Settings > Messages > Send & Receive. Add a check to both your phone number and email address. Then go to Settings > Messages > Text Message Forwarding and enable the device or devices that you want to forward messages to.
- Look for a code on the Mac, iPad, or iPod touch that you enabled. Then enter this verification code on your iPhone.
Use Continuity to connect your iPhone, iPad, iPod touch, and Mac - Apple Support
Cheers!

