Because the storage space of your mobile phone is insufficient, the mobile phone prompt can only free up space by emptying the cache. Regarding how to solve it, I will share the following methods:

Mobile phone model: vivo NEX

The specific steps are as follows:

1, open the I housekeeper on the mobile phone desktop.

2. Then click on the space cleaning below.

3. Click a button again, rest assured to clean up and wait for the cleaning to be completed.

4. After successful cleaning, as shown in the figure below.