I don't have the find my iphone app installed on my phone, can I still find it?

I lost my iphone, I don't have the app installed on my phone but if someone else had it on their phone can they find mine? What should I do?

Yes, as long as you know your Apple ID/iCloud account for your iPhone, if someone has the Find my iPhone app on their phone, you can find it. Be sure you leave your location services on, on your iPhone though at all times!

Hope this helped!