My headphones do not connect?

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My headphones do not connect

My headphones do not connect to my Huawei 7y 2019 i have not had this phone for so long and does anyone know how i connect them?

Do

There had to plug in the cable

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These are Bluetooth headphones

Do

Yes, but with cable connect themselves

Si

If necessary keep the Bluetooth button on the headset pressed for longer than 5 seconds

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Bluetooth have no cable

st

I already tried 3 mla