Tws i7 onoy onw work how can i pair the second one when the other one needs charging

Loic,

Here's some sites that may help you...

https://duckduckgo.com/?t=ffab&q=can't+connect+my+tws+i7s+to+my+phone

what PC is this. do you mean this?
if fails on all USB ports all PCs then the batteries in the buds are NO GOOD now.

USB Dual Charging Cable for HBQ i7 i7s Bluetooth Headset 20CM Power Charger Cable,I7S and I7 Earbuds USB Charging Cable

battery is #1 failure on all portable devices! even 1 year old abused

replace ok"?

1. Find the "Settings" icon on your iPhone, which is normally on the home screen.
2. Open and click on the "General" button.
3. Then, hit the "Bluetooth" button and slide it over to turn the function on.
4. Your iPhone should find the device once this is enabled and should show the device name on screen. When it does that, you will need to hit the "Pair" button in order for the devices to sync. You may need to enter a four-digit password, which is provided with your wireless device.
5. Once that is entered, hit "Connect" on your iPhone to complete the setup. Your headphones should now be working properly.

If your wireless earbuds are broken, then they can't be connected to any of your device. In this case, you can learn some new TWS wireless earbuds recommendations on: 10 Best TWS Wireless Earbuds

After connecting one, turn on the other. Then while both are powered on? Press and hold the button on both earbuds until they connect to one another.