Joe only wanted a mobile phone （ ）he could stay in touch wit

Joe only wanted a mobile phone （ ）he could stay in touch wit He kept in touch with people with a mobile phone用with还是on could us keep in touch by phone there are( )numbers in a mobile phone number in china? He could do nothing except____(stay）in bad. A mobile phone is in fact a smail radio stay in touch是什么意思 Excuse me,but could I use your mobile phone for a while?__.I talking loudly on a mobile phone is（ ） (polite) promise to stay in touch Let's stay in touch. He called 110 using his mobile phone.