a) Battery cover waterproof ring (Before installing the Furnished battery cover, make sure that the waterproof ring is flat and secured, and it is not easy to fall)
![](https://tct-open-document.s3.ap-northeast-1.amazonaws.com/image/Feature+phone/TCL+3189/image3.png)
b) Screws of Furnished Battery Cover (Make sure the screws can no longer be screwed)
![](https://tct-open-document.s3.ap-northeast-1.amazonaws.com/image/Feature+phone/TCL+3189/image4.png)
c) Waterproof silicone stopper (Make sure it is pressed tightly)
![](https://tct-open-document.s3.ap-northeast-1.amazonaws.com/image/Feature+phone/TCL+3189/image5.png)