network connectivity Problem

same prob my samsung a70s phone...network issues

Restart your device. It might sound simple, but sometimes that's all it takes to fix a bad connection.If restarting doesn't work, switch between Wi-Fi and mobile data:Open your Settings app   "Wireless & networks" or "Connections". Depending on your device, these options may be different. Turn Wi-Fi off and mobile data on, and check to see if there's a difference.If not, turn mobile data off and Wi-Fi on and see if that works.

from your side you can only reset network
settings >general Management >reset >reset network

I'm also facing this issue. There is no way to solve this problem with required software update from Samsung. Samsung mobile are useless now. Purchase other smartphones.