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Combined SIM is a SIM card design which can meet various types of mobile phones.Their are three size forms of current SIM cards,Standard SIM,Micro SIM,Nano SIM.With the rapid development of technology,we change our mobile phones very soon.But the SIM card is not need to be replaced frequently.When we want to change the mobile phone,if the mobile phone SIM card slot type of new mobile phone is different from previous,we should buy another phone card to satisfy the new phone.It’s very troublesome and it cause the waste of resources.Combined SIM is a perfect solution to this problem.
Qinhuangdao City of Hebei Province, China