My telephone says !activation required and wont let me in to my main screen

Does it look like this?

Activation Lock Problem

It requires the Apple ID and password of the previous owner. If you don't have it and cannot get it, then the device is useless to you. Return it for a refund, if you can, or take it to an Apple store for an exchange provided they will help you.

Find My iPhone Activation Lock: https://support.apple.com/en-us/HT201365

Turn off Find My iPhone Activation Lock: https://support.apple.com/en-us/HT201441

If you can't activate your iPhone - Apple Support: https://support.apple.com/en-us/HT201407

In the future check first before buying second hand: How to check for Activation Lock before buying a used iPhone: http://www.idownloadblog.com/2014/08/12/how-to-check-activation-lock-before-buyi ng-used-iphone/

Is it your AppleID that appears on this screen?

If so, then maybe your forgot your AppleID password: https://support.apple.com/en-ca/HT201487

If you forgot your Apple ID: https://support.apple.com/en-ca/HT201354

See "Activate Your Device" here.

Set up your iPhone, iPad, and iPod touch - Apple Support

Note your iPhone must have a SIM card to be activated.