You can always track UAE visa application and check visa validity through the UAE Government online and offline facilities.
For any queries on visas and residency permits in Abu Dhabi, Sharjah, Ajman, Umm Al Quwain, Ras Al Khaimah and Fujairah communicate with Federal Authority for Identity and Citizenship (ICA) at the toll free number 600522222 (from within the UAE) or through its feedback platform.
For Dubai visas, contact Amer service on the toll free number 800 5111 if you are living in the UAE. If you are outside the UAE, call Amer on the toll free number +9714-313-9999.
You may also check visa issues through General Directorate of Residency and Foreigners Affairs GDRFA in the respective emirate which issued the visa. The links are as below:
Updated on 01 Sep 2019