I was planing to buy a new c to c cable..but then i stumbled upon the versions..does 3.0/3.1 have speed variation in charging compared to 2.0 typ c cable.?

When i download samsung wallet,for me there is no digilocker nor upi option.why it isnt available for me,kindly support me with this

I am having bug issues after the latest updation...to be specific the tpuch is not working in sometime when u try to open the apps...it only works after clearing all the apps from recent apps list...anyone having this..?