Question: Numerical Integration

Hello,
I have to find the internal of
E_field := conjugate((-.7147663039-.8729430992*I)*exp((9.123185068*I)*cos(phi))*cos(phi)+(0.3187576278e-1+0.3371906130e-1*I)*sin(phi)*exp((4.561592534*I)*(-1.*sin(phi)+cos(phi)))+(0.7062621752e-1+.1302618973*I)*cos(phi)*exp((2.000000000*10^(-11)*I)*(53.*cos(phi)+1.570796328*10^11))+(-0.3187599160e-1-0.3371906130e-1*I)*sin(phi)*exp((4.561592534*I)*(sin(phi)+cos(phi))))*sin(phi):

I try to solve by
evalf(simpson(E_field, phi = 0..2*Pi));
evalf(Int(E_field, phi = 0..2*Pi));
evalf(Int(E_field, phi = 0.00001..5000/5001/2*Pi) + Int(E_field, phi = 5001/5000/2*Pi..5000/5001*Pi) + Int(E_field, phi = 5001/5000*Pi..5000/5001*3/2*Pi) + Int(E_field, phi = 5001/5000*3/2*Pi..2*5000/5001*Pi));
evalf(Int(E_field, phi = 0..2*Pi, method = _d01akc));

But I have got different results
1.439875689*10^(-7)-2.094395104*10^(-12)*I
-1.813171087*10^(-7)+1.082467449*10^(-15)*I
-0.8326460e-4-0.795790e-4*I
-1.813171088*10^(-7)+1.904705170*10^(-16)*I

I think because of it I get the wrong calculations. How can I find this internal right?