Samsung amplifiers 4 and 20 15 are better.

Because of different models, the design concept of products is also different, and each has its own advantages. It is recommended to choose the right mobile phone according to your own needs and preferences. Samsung w20 15, which continues the design of Samsung business model and is equipped with a 3.9-inch double-screen flip cover. When the flip cover is closed, it can be used as a straight touch screen mobile phone, and when it is opened, it can be used as a keyboard mobile phone. Everything is under your control. Support fast 4g network and download propeller function, so that download does not wait. Built-in s health function, tailor-made scientific and reasonable exercise plan for everyone, and carry out health to the end.