iPhone x activation in India brought from U.S

Practically speaking, an iPhone X brought from the US should work fine here in India. Only preconditions you need to take care of would be to ensure that the device uses GSM technology and is not locked to a carrier. Now that you have mentioned the iPhone X you brought is unlocked, you meet the second condition. Now make sure that the phone does have the GSM technology. If it is running on CDMA, you may not get any carrier here in India that would support it.

Please note that iPhone X can only be used in India with the following service providers -

• Airtel
• Vodafone
• Reliance Jio

The network bands that the phone supports would also have a bearing on whether you will be able to use it in India. Actually, that is exactly what you are expected to check out before you buy a phone from a foreign country.