Wanted to know if my visa is canceled

The sponsor or his representative (for example, in case of companies) shall do the procedures for cancelling the residence visa. The sponsor can not proceed without permission and the sponsor signature.
If the company decides to cancel the work visa for the employee, it must first refer to the Ministry of Human Resources and Emiratisation and apply for cancellation of the work contract and the worker's ID card. This application must be signed by the employer and the employee, attached by a letter signed by the worker stating that he /she has received all of his / her salary, entitlements and end of service benefits from the company.
After completing the cancellation at the Ministry of Human Resources and Emiratisation, the sponsor can only apply for cancellation of the residence visa at the general directorate of residence and foreign affairs in the competent Emirate.
If you have an entry or visa / visa issued from Abu Dhabi, Sharjah, Ajman, Umm Al Quwain, Ras Al Khaimah or Fujairah, you can check its validity, date of issue and completion through  the e-Channel Smart Channels , Of the Federal Authority for Identity and Nationality. 
If you have an entry or visa  issued from Dubai, you can inquire about the validity of the visa and the date of its 
issuance and termination through the website of theGeneral Directorate of Residency and Foreigners Affairs in Duba