Can't see the Full screen on my lenovo smart phone.

Hello dear androidpit community. I am facing a big issue and i am very disturb I am a freelancer and got the task to creat the front page of a website along with the 3 pages and 2 categories, whose link will be provided in the end for reference. I have done all the hard word and created the pages, homepage and also the categories. I have used the frontier theme, created in wp. Frontier is a responsive theme. Now the site seems ok on pc but as we check in the mobile it doesn't fit in my lenovo phone. I have check in samsung, htc. Working fine issue with the lenovo phones, tested on 2 , 3 lenovo phones.