Whether or not you'll be able to get FaceTime depends on where it came from and where you are:
1. iPhones which originated from outside the Middle East(except Pakistan) will have FaceTime worldwide. If it's missing on these, check the device’s restrictions, search for it, or redownload it from the iTunes App Store.
2. iPhones which have AH or HB just before the slash in their model numbers work the same as those in #1. To check this, choose Settings, General, and About.
3. iPhones which have AB, AE, or UR just before the slash in their model numbers will only have FaceTime in Egypt, Qatar, Oman, Jordan, Lebanon, Bahrain, Kuwait, or Saudi Arabia; for the last country, it'll need to be running at least iOS 11.3 and the current carrier settings.
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