Whatsapp is disappeared in Ultra power saving mode I just bought a Samsung C9 Pro mobile phone. Not sure what I did on the phone, when I change it to Ultra power saving mode, Whatsapp is disappear and I'm unable to use it. It worked well before but not sure why it disappear suddenly. I already remove and re-install Whatsapp on my phone but cannot help.
You can use what's app just go to gallery select any photo to share and then you will get 3 options 1 one is whats app just go ahead and select any contact when whats app is about to send the photo click on upper left hand corner what's app back button ...

Then you will able to use what's app without any problem
Just remember do not to clear your recent apps if u clear that part then you have to do the same processes again