The first robbery happened just after 6:00 p.m. in the 6800 block of Bustleton Avenue.
Police say a robber entered the Metro PCS store and got away with some cash.
A short time later, another robbery took place at the Metro PCS store in the 6400 block of Frankford Avenue.
A suspect was apprehended at that location.
Police believe he was involved in the Bustleton robbery, too.
Authorities continue to investigate.