A lot of iPhone users are having a strange problem on WhatsApp

WhatsApp all about?

There's an unusual glitch on WhatsApp that's currently impacting iOS 9 users on their iPhones. According to the Daily Star, the volume switches off when users go on WhatsApp while listening to music and try to add an image to a message. The most annoying element is that the volume doesn't appear to return when users exit out of WhatsApp.

Now also annoying audio issues on #iOS9: Camera view in Whatsapp sets system volume to 0 cc:@saidmarouf

— Björn (@bjoern2000) October 2, 2015

Whatsapp ? iOS9

— Manu (@manu_balle) September 30, 2015

Anybody else getting random silent messages in Whatsapp, FB, email after #ios9 update? Some sound, some silent

— Graham A (@graham1A) September 29, 2015

The issue is even caused by Facebook on certain phones and it is believed that Apple are working hard to correct the problem.