Do not let your maid buy mobile phone. My last maid always talk to her friend on the phone and I fried her.
This time, I told the agent that I do not want my new maid to have mobile phone. However, when my new maid came, she already has a mobile phone. The agent asked me to keep the phone. My maid knows that I fried the last one because of the phone. After a few months, I think that she might need to use the phone and I gave her back. I thought she was OK but since then, she always send SMS to Indonesia/friends DAY and NIGHT. She put the mobile phone in the washroom and pretends to go to toilet every 10 minutes. I asked her not to hide in the toilet and send SMS all the times, it seems she doesn't listen. I don't want to fry another one coz it is too expensive.
If it is possible, don't let maid buy mobile phone. Yes, 電話真係好影響佢.