Whether or not you can watch TV in jail will depend on the policies of the specific jail or prison where you are being held. In some facilities, inmates are allowed to watch TV during certain hours of the day, while in others, access to the TV may be limited or prohibited.
In general, most jails and prisons have rules and regulations governing TV use, including restrictions on the types of programming that can be watched, the hours during which TV can be watched, and the number of inmates who can use the TV given time.
Access to TV in jail is typically considered a privilege. It may be restricted or revoked if an inmate violates jail rules or engages in inappropriate or disruptive behavior.