Will my att SIM card work in metro pcs phone

[hansonad65]

Have att phone SIM card that’s on !Will It Work In Metro Phone

 

[helpstar]

if the size of the SIM fits into the metro pcs phone and the phone itself is not blocked for AT&T network, it will work

 

[andytoros]

Most likely not if your At&t device is locked because Metro PCS is T-Mobile's prepaid carrier. But if it is unlocked then I do not see why not.