S21 usa model

[pak060]

Which csc is best for galaxy s21 usa model to flash for best working in pakistan. 

For signal strength

[user9992112]

Signals' strength is not dependent on CSC version. It depends on the antennas.

[pak060]

Is s20 ultra signal strength better than s21 5g.

[user9992112]

I have used s10, s20 5g, s21 FE and s23 FE and they all have same signal strength

[user9992112]

I also have s24+ but I haven't used my sim in that phone yet

[Zarrar26]

If you have the xaa csc, then download the U1 firmware, it is the default one, and will get automatic updates too.