I'm currently in Germany, and today a woman asked if she could borrow my phone on the street, as she needed to make an urgent call. The thing is that I lended her my phone and, while I was making sure my wallet was safe (she gave me a very weird vibe), I noted she was inputting some dialer code (something like #number#othernumber) on my (Android; Samsung) phone and doing something strange with hers. When I noticed it, she hid her phone, she moved a bit doing as if she was calling, and then I asked her to give my phone back. She did and told me that "the person she was calling must be asleep", gave my phone back, and then quickly went away.
I checked the call she did and it lasted 5 seconds, and there is only a number and no trace of the code she inputted on the dialer (I'm pretty sure I saw a couple of # symbols on the dialer). A couple of seconds after, and just for "security" I turned off my phone, but later I had to turn it on again to check some emails.
- Is it possible to list all the codes dialed in my phone in order to check what she did?
- What could she have extracted from my phone? Could she have installed something? I had Bluetooth turned off, and only phone calls and internet could be used.
Any help would be greatly appreaciated, as there are bank apps on my phone that I think could have sensible information.