Is there a difference between an internal dedicated mobile phone and a non-internal dedicated mobile phone?

In-house purchase refers to the mobile phone purchased internally, that is to say, the mobile phone purchased internally. There may be some discounts for in-house purchase, which means that the price may be relatively cheaper. Internal purchase is limited to internal personnel purchase. A normal mobile phone refers to an ordinary mobile phone, which is a mobile phone that can be used normally. Generally speaking, normal mobile phones are mainly used for answering phones and sending text messages, and of course they can also surf the Internet.