Verified answer

1 If you do not charge your phone, it does not work

2 If you prepare well, you will pass the test easily

3 If Will wanted to come with us, he would call us

4 If we had started doing karate, we would have been able to protect ourselves

Zero Conditional

If + Present Simple, + Present Simple

First Conditional

If + Present Simple, + Future Simple

Second Conditional

If + Past Simple, + would + infinitive

Third Conditional

If + Past Perfect, + would + have + V3/ed