Quick answers
What are the default controls in Free Fire?
There is no fixed default worth memorising, because every button on the screen can be moved and resized in Settings › Control › Custom HUD. The layout the game starts you with is a two-thumb layout: joystick bottom-left, fire bottom-right, with jump, crouch and items stacked around it. Everything about that is meant to be changed.
What sensitivity settings does Free Fire have?
Six independent sliders: General, Red Dot, 2x Scope, 4x Scope, Sniper Scope and Free Look. Each applies only in its own situation, which is why your hip-fire can feel perfect and your 4x can feel unusable at the same time — they are separate numbers.
Is a four-finger claw actually better in Free Fire?
It is faster if your hands and your phone support it, and that is a bigger if than any guide admits. Two things have to be true: your screen's digitiser has to register four simultaneous contacts, which not every budget phone does, and your fingers have to reach four separate places without covering the screen or colliding. Both are measurable on the device you are reading this on, and the lab on the hub page measures them.
Why does my phone ignore one of my fingers in Free Fire?
Almost certainly because the touchscreen has hit its simultaneous-contact limit. Phone digitisers report a maximum number of tracked points — commonly two, five or ten — and once you pass it the newest contact is dropped or an existing one is deleted. It looks and feels like the game ignoring you, and it is the hardware. Test it before you rebuild your layout around a grip the device cannot deliver.
Does Free Fire support a controller?
No. The game is touch-only on its supported platforms, and the control surface is the screen itself — which is why this entry records sliders and toggles rather than a button list.