Hello, since I update oneui 4 with my S21 Ultra, sometimes WhatsApp are not notification!!! When I open the app then I found out have messages there!!!
Already happened so many times! I'm lean on WhatsApp for my business, missing my customers message are super annoying!!
See, after android 12 one Ui 4.0 update on S21 Ultra, such issues are more common here. 1. You may try clearing app cache, if it is not solving then, 2. uninstall and reinstall the whatsapp but take back up prior it. 3. If the issue still persists then try wiping cache partition by booting device into recovery mode.
For assistance, please visit one of our authorized Service Centers to check it for you. You may refer to the link it will guide you to the nearest service center to your location https://www.samsung.com/ae/support/service-center/
