Originally Posted by Diabo
There's no way to stop it from within Viber, because they refuse to let us choose for ourselves whether we want it to autostart or not. They seem to think their app is so great that it doesn't need an off switch.
You can use apps like Autorun Manager to stop Viber from starting when you boot your phone.
I tame Viber with the autostart manager from ROM Toolbox
You don't need to be that rude mate, as it seems, the Viber dev. is always hearing our suggestions.
But thanks for giving out this app, but I refuse using an app for this purpose. Any app should have an auto-start option.