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I have recently updated my Galaxy S3 to KitKit and since then I have had issues with all google related products and noticifications plus WhatsApp. With Gmail, Hangouts and WhatsApp I don't receive any notifications unless I open up the app and refresh it. Very frustrating. I have to tried to reinstall all apps but this doesn't seem to help. I have checked that Autosync is checked. Any suggestions? Thank you!