SIMCARD Subscriber Identification Memory CARD 用户识别卡
If the user wishes, then they can take out their SIMcard and out it in another phone to work as normal.
如果用户愿意，他们可以把SIM卡拿出来、放进另外一个电话里一样可以工作。
youdao
You'll need a simcard to go in it - and the advert pointedly says it does not do 3G.
BBC: In search of simple phones
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模块上移
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