Bluetooth connectivity issues (common Asus Zenfone 5 problems and fixes)
A simple reboot is the first thing you try to solve this issue
If it is still there, next step is to disable all the third-party apps you have installed in your device
Clear the Bluetooth cache and update the Bluetooth app in case it is pending
Make sure you haven’t hide the visibility of your Zenfone 5 from the other devices due to security or any other reason. If so, change this from the settings
Transfer the data through Bluetooth only after disabling the power saving mode
Don’t keep the record of previously connected devices for long
Wi-Fi connectivity issues (common Asus Zenfone 5 problems and fixes)
See if the Wi-Fi is turned On and the network is stable
If not, restart your router
Make sure the services are active on your connection
The cable connection should be correct
The authentication details must be clear to you
If so many applications are running in the background, close them