It happened July 26th around midnight in the 1100 block of South 46th Street.
Surveillance video shows the two suspects walk up to the woman.
One man pointed a gun at her and held her back while a second man grabbed her cell phone and demanded her pass code.
Once the victim gave it to them, both suspects took off.
The woman was not hurt.
If you have any information about this crime or these suspects, please contact: Southwest Detective Division (215) 686-3183.