Why will my phone not connect to the Internet while on wifi?

[AC Question]

I recently had to change my phone to Android due to damage on the old one. I have a Samsung Galaxy A5 and it will not connect to the Internet while on wi-fi. It will pick up my home wi-fi but will not connect to the internet, no matter what I try. I can load FB, Google search and YouTube, but nothing else. I have reset the router and the phone several times. I have not done a factory reset of the phone since it was new out of the box and never worked properly on the wi-fi. My laptop (and old phone) and a friends phone work no problem on the wi-fi and I am getting very frustrated with the phone!