iPhone freezes

Hhukhan ~ What model of iPhone is it?...

Settings > General > About > Model Name

And what version of iOS is it running?...

Settings > General > About > Software Version

If your iPhone won't turn on or is frozen

õ¿õ¬

Okay, 90% max capacity indicates a healthy battery, so consider calling Apple about the freezes — their worldwide phone #s are here:

Contact Apple for support and service

õ¿õ¬

Hhukhan ~ In case you don't understand, please tap on this Settings app icon:

...and scroll down to Battery and tap on it. Now perhaps this will make sense:

What's the Maximum Capacity % here?...

Settings > Battery > Battery Health

õ¿õ¬

See if this helps: If your iPhone won't turn on or is frozen – Apple Support (UK)

You can use the get support link at the top of the page to contact Apple directly for help with this.

Does your iPhone SE 2nd gen. still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

õ¿õ¬

And, again, if it's not frozen now, what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

õ¿õ¬