IMEI is the abbreviation of International Mobile Equipment Identity is a unique identifier which is used for all GSM, WCDMA and iDEN mobile phones.
To find the IMEI number in "online IMEI checker' you have no need to type to code manually and take screen shot of the IMEI or take a pen copy for writing the IMEI number.
you need to install and open app and you will able to check, save and share with friends etc your IMEI.
This app help to check IMEI number. You can copy IMEI to clipboard or share to your email for future reference in case your mobile gets lost or stolen.
In case your mobile is stolen you can provide IMEI number to your service provider and they will be able to block your phone so it will not be used for any illegal means.
IMEI Number for dual sim mobiles has been added. Now you can get IMEI for both sim slots.
Let me know if need any updates