Each activated account gets 1500 free bandwidth points every 24 hours. So if your bandwidth remains zero, please deposit some TRX to your account to activate it.
If you want to make transactions after the activation, please make sure there is enough available TRX in your wallet to provide bandwidth and energy. Otherwise the transfer will fail or you will get the error “Not enough TRX or bandwidth for transfer”.
Therefore, it is recommended to transfer 50 to 100 TRX to your wallet, then you can successfully make transactions after your TRX wallet is activated.