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原帖由: krystinhall ,

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Put your phone into airplane mode, remove your SIM card, turn phone off, wait for a few minutes...put the Sim card back in, turn the phone on, turn off airplane mode and let the SIM re-activate. If this doesn't fix the problem, have your carrier reset your line and then try the above steps again.  Should be good to go!  :-)   Just followed those same steps with carrier reset on a customer's iPhone 6+  and it worked perfect.

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