A miniaturized multiband Inverted – F antenna has been proposed in this paper for mobile phone applications. This miniaturized antenna is surrounded by metal rims with two open slits. This is a strategy which gives an idea to design a metal rimmed antenna for a mobile phone application. This antenna is capable of covering GSM900/DCS/PCS/UMTS2100/LTE2300/2500 operating band which can be generated by the metal rim structure with two open slits which means it is broken into three parts. The remarkable radiation performance obtained due to metal rim is the reason for which this proposed antenna is a candidate of WWAN/LTE. Parasitic element is used in this proposed antenna for better current distribution, which provides better radiation performance. The operation mechanism of antenna along with radiation coefficients, and radiation patterns are simulated and the results show the effectiveness of the proposed antenna for mobile phone applications.