Application for N-400 was received by USCIS on 4/11/2016 for both me and wife. Received I-797C for both. Wife received letter for biometrics appt (NJ USCIS office). I did not. After speaking to USCIS officer, I found out the zip code in my N-400 application has a typo due to which the letter was issued requesting the biometrics to be done in neighboring state/city –Philadelphia  (closest USCIS office for the incorrect zip code). I called the USCIS, spoke to the officer and got the letter of b