一些手机相关的表达
(1)credit = money 信用=钱
run out of credit: My phone’s running out of credit.
信用耗尽：我的手机快没钱了
have credit/ no credit: 有信用/无信用：
My phone has no credit = I have no credit on my phone.
我的手机没钱了/没话费了
(2)balance: 余额；平衡
Check your balance on your phone.
在手机上查看余额。
top up your phone = 充话费
put money on your phone = 充话费
add money to your phone = 充话费
(3)upgrade your phone
升级你的手机
(4)reception: 信号
There’s no reception here：这里没有信号
You have bad reception：你的信号不好
reception = signal = 信号
(5)charge your phone
给你的手机充电
（charger：充电器）
(6)Your phone is dead
你的手机关机了；手机没电了
（= Your phone has no battery power.你的手机没电了）