How to install a 3-in-1 kitchen tap water filter?

I'll split this into two most common types so you can follow exactly:
1. Faucet-mounted 3-in-1 filter (screws directly on your existing tap)
2. Under-sink 3-in-1 filter tap (whole new faucet + under-counter filter)

This is the small head that attaches to your existing kitchen tap.
Steps
1. Remove the original aerator from your faucet tip (turn counterclockwise by hand or with a wrench).
2. Check thread size – use the included adapter if needed (most fit standard 22mm male/female taps).
3. Screw the filter base onto the faucet tightly (clockwise) by hand.
4. Attach the filter cartridge to the base.
5. Flush for 3–5 minutes on filtered mode to remove carbon dust before drinking.
6. Switch between stream/spray/filtered water using the switch on the unit.

This is a complete faucet with hot / cold / filtered water from one tap.
Tools Needed
Adjustable wrench, screwdriver, Teflon tape, bucket / towel

Step-by-Step Installation
1. Turn off water supply
Close hot and cold angle valves under the sink.
2. Remove old faucet
Disconnect hot/cold lines, loosen nuts, take out old tap.
3. Install new 3-in-1 faucet
Place the faucet through the sink hole, fix the base and gasket.
Connect hot and cold water lines normally.
4. Connect the filtered water line
Run the small tube from the faucet to the under-sink filter system.
5. Set up the filter
Connect filter inlet to cold water line
Connect filter outlet to the faucet's filtered tube
Use Teflon tape on threads to prevent leaking
6. Turn on water supply
Check for leaks under the sink.
7. Flush the filter
Run filtered water for 5–10 minutes to clean the cartridge before use.

* Do not use excessive force to avoid cracking plastic parts.
* If water leaks, wrap Teflon tape around threads and retighten.
* Replace filter cartridge every 3–6 months depending on usage.

https://www.angefilter.com/