iPhone locked, which software worked?

Best software that actually unlocked iPhone (iPhone 4S) and iPad (iPad 2)

My mum's iPhone 4S got locked, my brain hurts for many years. Tried multiple softwares including the common iTune reset, PassFab iPhone Unlocker, iMyFone LocWiper, but none of these methods worked. Finally landed a software called FoneLab iOS Unlocker, and it actually worked with simple steps.

Update: WOW, iPad 2 was also unlocked using the same software (it failed once, but the 2nd time had unlocked without a problem). BUT, the Apple ID had blocked the access, and would still need Apple ID to unlock.

I'm not affiliated with FoneLab iOS Unlocker, I just know that it worked and if anyone else is interested in using it.