What's the difference between Samsung s7edge version?

Samsung s7edge mobile phone has three versions: Chinese version, Hong Kong version and American version. The differences between the two versions are as follows:

There is no Samsung mobile phone logo on the front of the Samsung s7edge mobile phone of the Bank of China, and the Samsung mobile phone of the Bank of China has a national warranty system. Bank of China version of Samsung s7edge mobile phone can only install a mobile phone SIM card in the mobile phone; The front of Samsung s7edge mobile phone in Hong Kong has Samsung mobile phone logo, and the after-sales warranty of Samsung mobile phone in Hong Kong is limited to Hong Kong and Macao. Hong Kong version of Samsung s7edge mobile phone can install two SIM cards in the mobile phone; The US version of Samsung s7edge mobile phone has a Samsung mobile phone logo on the front. The after-sales warranty of the US version of Samsung mobile phone is limited to the place of purchase. The US version of Samsung s7edge mobile phone can install two SIM cards in the mobile phone.