When I am connected to school Wi-Fi, I can browse but I cannot connect to WhatsApp or Instagram. When I am connected to Wi-Fi in other places, both WhatsApp and Instagram work perfectly fine. The only way one can access WhatsApp and Instagram using the school Wi-Fi is using a rooted phone and I don't want to root mine. Please help.
Maybe your school has a firewall or blacklist, that blocks these sites? Is your friend using a vpn or something like that? These are sometimes easier to configure with root, than without.