He was described as wearing black pants and a white T-shirt. The loss was not immediately determined, Buttle said. Another mobile phone store was robbed at 10 p.m. Friday with a similar description of the suspect. The T-Mobile store at 4724 Clairemont Mesa Blvd. was robbed by a man who displayed a stun gun to the clerk. The robber was wearing black pants, a white T-shirt and a mask. Robbery detectives were investigating to see whether the two crimes were connected, a SDPD watch commander said.