I too encountered this problem but found the solution that works for me.
What I found out is that it you try to connect to your camera while your phone also has another wifi network profile saved, it will have difficulty connecting. So make sure when you try to connect to your camera, delete/forget all other wifi network profiles first.
This is what I do step by step to make sure I connect to my camera:
1. Make sure camera is off.
2. Make sure phone wifi is off.
3. Open wifi settings in phone and remove/delete all networks I am connected to or have saved previously in your CURRENT area. (E.g. If you are at home and connected or have saved profiles to your home and other wifi networks, disconnect AND delete the profiles. You have to both disconnect and delete/forget the saved profile. I know sometimes it's a pain to type the password again but so far it is the only solution that works for me.)
4. Turn camera on and select the wireless communication.
5. Turn on phone wifi.
6. Open Camera Remote app in phone and select which function you want to use. I usually only use Browse.
7. Wait for devices to connect.
8. Enjoy!
I hope this works for all who encounter the same problem. Cheers!
