How long does it take to retry to activate ohone

Please look at this --> If you can't activate your iPhone - Apple Support

If you are the owner or the owner has shared all information with you then to open Activation Lock:- If it is Activation locked, read here --> Turn off Activation Lock - Apple Support Activation Lock for iPhone, iPad, and iPod touch - Apple Support

Learn how to remove a device from a previous owner's account.

If you are not the owner and do not have the Apple ID and Password then there is no way that you can get into this iPhone unless the original owner shares the Apple ID and password with you. If you are lucky you can get into this iPhone if they (owner) accidentally remove the device from their apple ID.

"How long does it take to retry to activate phone?"

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How Long it would Take:

That would vary. If you are using Wi-Fi, then with a faster speed, it would all follow through, nice and quick. Also, disable Cellular(tap the button next to "Cellular" in Settings to that it is grey-colored). Cellular data is always overrules Wi-Fi In all, it may go quicker using Wi-Fi.

Contact Apple Support:

So, if it is not working, then contact Apple Support.

Contact Apple Support:

• Contact Us - Choose Locations
• Proceed from there as necessary