N edition version of the plug connector and I distinguish: 

I version is suitable for: Apple series， millet whole series， blackberry whole series， LG series， Meizu whole series， 

Nokia Lumia series， Sony (Sony Ericsson) series 

Samsung / Motorola / Huawei / HTC majority Model I version， the specific models， please contact customer service 

N edition applies to: 

BBK whole series， duo CD series， Jin whole series， cool series， Lenovo whole series， 

Nokia full range (except Lumia series)， OPPO whole series， Sony Ericsson series， 

Amagatarai whole series， ZTE full series 

Samsung / Motorola / Huawei / HTC small part of the model for the N version， the specific models， please contact customer service