According to the information you provided, you have recharged the phone bill of vivo, but still cannot use the mobile network, only WiFi. There could be several reasons why this might happen.
First, you can check your phone's network Settings to make sure mobile data is turned on.
Second, you can contact your mobile phone carrier to confirm that your mobile phone account is working and that there are no restrictions or glitches. Finally, if the above steps do not solve the problem, you can try to restart the phone or software update to ensure that the phone system is working properly. If the problem persists, it is recommended that you contact vivo customer service for further help and support.
The first thing to exclude is that you have not paid enough phone bills, and the phone is still in arrearage.
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The second thing you need to check is that the power supply to your home broadband is working.
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The third point is to see if the router is working properly. You can disconnect the power in each plug of the router and try it again.
1. The mobile phone bill has not arrived or the mobile phone networking information has not been updated in time.
2, the mobile phone bill does not fully offset the fees owed.