Q: Security reasons

You have encountered a security lock

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

If your Apple ID is locked - Apple Support

Yes. If you READ the first article, the first paragraph says:

If you enter the wrong passcode in to an iOS device six times in a row, you'll be locked out and a message will say that your device is disabled.

Same deal with the 2nd link:

If you or someone else enters your password, security questions, or other account information incorrectly too many times, your Apple ID automatically locks to protect your security and you can't sign in to any Apple services. You can unlock your Apple ID after you verify your identity.

please read that one carefully - all the info and links you need are in there

I do not quite understand your statement... but it matters not - you need to follow the instructions in If your Apple ID is locked - Apple Support - the last pertinent sentence is:

...

If you see a message that is different from the alerts above and you can't reset your password,

contact us for help.

...

We are NOT Apple employees, just users like yourself, so we cannot DO anything for you nor can we offer any better advice than is contained in the Apple article

I want get mail unlock iphone

It shall remain one of *Life's Great Mysteries* if Apple Support cannot answer you.

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We need much more information to give you specific help. Tell us step-by-step, in detail what your actions are.

Tell us a Story

- with a beginning, a middle and end. We need to understand everything that you know and have experienced.

If this issue is new, tell us what immediately preceded its onset - add software, upgrade or update? New equipment?

Quoted from  Apple's "How to write a good question"

   To help other members answer your question, give as many details as you can.

• Include your product (device) name and specs such as processor speed, memory, and storage capacity. Please do not include your Serial Number, IMEI, MEID, or other personal information.
• Provide the version numbers of your operating system and relevant applications, for example "OS X 10.4.11" or "Safari 4.1.3".
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• List any troubleshooting steps you've already tried, or temporary fixes you've discovered.

For a detailed "coaching", please see the User Tips Help us to help you on these forums and Writing an effective Apple Support Communities question

If Apple Support person is not alarmed, I would not be either.

It was likely just a momentary glitch (based on your description of your experience)