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当今,使用手机已是非常平凡的事,而因出差或其它原因拥有两张SIM卡的手机用户也不少。但是携带两张卡在使用时非常麻烦,而且空余的卡容易丢失,笔者希望手机厂商在手机上多设置一个插卡槽,并在手机电路与卡之间的数据线上串入一个并行切换装置,此功能相当于一个多刀多掷开关,该改动并不需要其它改动,对手机厂商而言此改动非常简单,而其用户可免于拆卸电池以更换SIM卡和空余卡,这对于使用和携带都非常方便,相信这种手机定会受到很多用户的青睐。
Today, the use of mobile phones is very common, and there are many mobile phone users who own two SIM cards for business trips or other reasons. However, carrying two cards is very troublesome when used, and spare cards are easily lost. I hope that mobile phone manufacturers will set more slots on the mobile phone, and a parallel switching device will be serially inserted between the data lines of the mobile phone circuit and the card. This function is equivalent to a multi-pole multi-throw switch. This change does not require other changes. For mobile phone manufacturers, this change is very simple, and its users can avoid disassembling the battery to replace the SIM card and the spare card, which is for use and It is very convenient to carry, I believe this kind of mobile phone will be favored by many users.