What are the precautions for traveling to Poland? How to use the mobile phone when going out? How much do you charge?

You can roam in Poland with the G network. It is recommended to bring a dual-mode mobile phone or a G-network mobile phone, and the customer service hotline is free. Call back Chinese mainland "+86 called number" 6.89 yuan/minute; Dial roaming local telephone "direct dial called number" 4.59 yuan/minute; Answer the phone 5.99 yuan/minute; Sending a short message to Chinese mainland "directly enter the other party's number" is 2.29 yuan/piece, and receiving short messages is free. (The above charges are applicable to Tianyi UIM card for reference only) For more service concessions, click "official website" below to answer your questions.