iPhone 6s Plus can't install third party apps

[edrickmark]

I recently change from 6 plus to 6s plus. I realise that I can't install third party apps like kuaibo, xigua and etc third party apps. Last time my 6plus I can install it just press TRUST but for 6s plus, after install the apps and I click it don't have this TRUST word. So anyone here can help ? Thanks

 

[JinSChen]

Go to Setting->Profiles->Trust

 

[edrickmark]

Go to Setting->Profiles->Trust

Now can use already. Thanks bro