To be annoyed at my friend using my wifi to update her mobile without my consent?

[LoveSchoolHolidays]

I have put 2 & 2 together and could be wrong, but a few things have happened recently to make me think my friend is using my wifi whenever she visits my house.

Ages ago I gave her my wifi password so she could use my internet on her mobile phone, I can't remember what she wanted to do at that time. In February we changed provider, didn't tell my friend, didn't even think about it. Then she got a massive phone bill and asked me if I'd changed my password, she didn't connect the two but when I told her to dispute the bill as I presumed it was a mistake, she made a load of excuses why not and that is when I put the two together. I believe that she has been updating the software on her phone when she visits me and so was being charged by her provider when she thought she was using my wifi for free. I did give her my new password before I got suspicious but now I watch her when she visits and she is on her phone more than my other friends, which I think is rude anyway.

Yesterday I had to leave in a hurry and as I was practically pushing her out the door, she stopped on my doorstep and started fiddling with her phone, when I told her she needed to hurry up as I was in a massive rush she made an excuse about a text message. Surely a text message could have been dealt with after she had left and I was on my way. That really annoyed me, I think she was downloading something and had to stop it before she left.

I might be paranoid and come across as a weirdo but I feel she is using me, she doesn't have Internet at home and I do let her visit me with her laptop occasionally when she needs to use the Internet which I dont mind, I just want to be asked, I don't know what she is downloading and on a basic level it is theft.

I'm thinking of changing my password and not telling her, is that just petty?

WWYD?

Whilst friends of mine are welcome to my wifi password I generally have only had people ask to use it if they're needing something specific or are staying with me for a while. If someone is round to see me for a chat then we're usually talking to each other. Agree this could be generational as I'm middle aged. Suspect if someone came round and spent hours faffing on with their phone for no reason (ie not something they needed to sort out urgently) they wouldn't be a friend and wouldn't be someone I'm bothered about seeing again..

I agree 2rebecca

In fact I also think that even if it doesn't cost the OP anything that's not the point.

If the friend(?) wants regular access to the internet then she should set it up for herself imo, not rely on others.

Why can't she rely on others? Have you never used a neighbor's dryer or taken in a package for someone? What's wrong with people doing things for others whom they claim to like! What's wrong with helping out?

Such a sour and unpleasant way of thinking.

Yes, I have helped others & others have helped me.

I would find someone constantly using my Wifi taking the piss though tbh.

Some things if you want them, you set up & pay for yourself.

Helping others out is fine if they ask for help and acknowledge you have helped them and aren't just using stuff without asking that is stuff you would normally expect them to buy themselves, and if they don't give the impression that the only reason they are coming to see you is to use your stuff.
The OP isn't getting anything out of this it all sounds one way.
If a neighbour asked to use my dryer once and I said yes I wouldn't then expect her to bring her washing every time she came to visit me.

My late DF once had a neighbour who would always poo in their loo every time he came to DF and DSM's house! my DF and SM began to notice the whiff this chap always making a point of using their loo and they were truly appalled, but couldn't do anything about it.

Ugh fantasticbuttocks!!! I have no problem with someone pooing in my toilet but would have an issue if they came round specifically to poo!

Yes 2rebecca if a friend couldn't afford wifi and needed to use mine I'd be happy for them to come to my house to use it, but if they pretended to come round just to see me and then furtively used it I would be annoyed.

Maybe she's embarrassed. Why not offer or ask her about it instead of the horrible anti-social stuff being suggested here? It's not like she pulls laptop out and starts watching breaking a movie.