How to free up space on Android?

Question

JavaScript

At some point, I stopped receiving software updates on my phone, it says that the place has run out. In the memory management section, it tells me that 3 gigabytes are occupied by "other files", if you go into these other files, you can see that there is no nichrome there: Books (60 Kb) and Playlists (12 Kb).
What can take up 3 gigabytes of phone memory? If I:

• I don't store or listen to music on my phone.
  
• I do not use VKontakte, Facebook and other heresy
  
• I have at most 5 photos on my phone
  

From the downloaded programs:

• Yandex.Electric trains
  
• Yandex.Navigator
  
• Firefox
  
• Google Authenticator
  

Cleared browser caches. In the settings of Google maps and Yandex maps, the cache was rummaged and the saved maps were deleted. There is no root and I do not want to put it. Phone Samsung Galaxy Core 2 Duo.

Answer 1

With variable substitution

const x = 6;
const y = 2;
const pattern = new RegExp(`^\\d{0,${x}}(\\.\\d{0,${y}})?$`, 'g');

Answer 2

Try like this:

const pattern = new RegExp("^\\d{0," + x + "}(\\.?)\\d{0," + y + "}$", 'g');

Answer 3

^\d{0,6}(\.?)\d{0,2}$/g
If you don't have a dot, you can enter 8 digits.
Your expression says:
And you need:
First 0..6 digits; then either emptiness or (dot; then 0..2 digits).
^\d{0,6}(\.\d{0,2})$/g

Answer 4

At one time I caught such a glitch.
This situation can arise with a crooked update of one of the Google services.
My question was resolved as follows - remove all updates related to Google services:
Market, Music, books, games, etc.

Answer 5

temporarily install es filemanager and analyze folders with its analyzer

Answer 6

Hello,
Do you have automatic recording of all conversations? There's a bunch of mp3's in there...