What should i do if the computer or laptop unable to read my phone when connect via USB cable?
1. Make sure you are using the original USB cable.
2. Make sure you have choose the option to use USB for ”File Transfer/Android Auto” in the pop-up windows on both phones.
3. Try the settings on your phone.
i. Open Settings>>About phone>>Tap on the MIUI version 7 times to enable the "Developer options"
ii. Back to Settings>>Additional settings>>Developer options>>Search & enable "USB debugging"
iii. In the Developer options search for "Default USB configuration">>Select "File transfer"
Please try the step below if the computer/laptop still doesn’t recognize the phone.
1. Test the USB ports with different phones, cables and laptops to determine if the issue is specific to a particular device or cable.
2. Try disconnecting and reconnecting the phone to different USB ports.
3. Ensure that your laptop has the latest Windows updates installed. Sometimes, Microsoft releases updates that include fixes for USB driver-related issues.
4. Visit the website for your laptop to download and install the latest drivers. Because outdated or incompatible USB drivers can cause detection problems.
5. If the issue still persists after updating the drivers, please try to uninstall the USB drivers and reinstall them.
Does it help?