If the battery is short-lived, swollen, or the device turns off intermittently, it must be replaced.

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Changing the battery can be done when these symptoms happens to our Huawei P Smart Z. As we can know if the Huawei P Smart Z's battery is to be changed, in some phones it is very easy just looking at the life of the battery. If the battery life is below 80% then it needs to be changed.

Let me know in the comments above, if you need more information!