At 9:51 she is "putting her number in his phone", but if you watch her fingers she is just tapping on the lock screen and swipes to the camera before handing it back to him.
The coffee cup Sherrie is drinking from has the big lots $4 price tag but during the the same conversation the price tag is later gone.
After Gabe's speech, the woman asks for his phone to save her contact. She then pretends to enter the contact by typing on the lock screen and opening the camera function, before handing back the device. Although it is clear that the actor believed the phone screen would be out of shot, it is extremely visible in the scene.