There are three kinds of mobile phone case on the market now, silicone plastic, metal, wood;  Before I used soft silica with a more comfortable and have resistance to fall off, but it won't be durable before is not good-looking, not easy to clean.As the silicone is harmful to healthy, then I discard. In term of metal, it has qualitative feeling more, resistance to deformation ability strong, easy to clean to bear or endure dirty, but sometimes will affect signal, with the temperature changing,then it take hot in hand, winter... 

The silica gel  

                                                 Photo by MART PRODUCTION from Pexels

Advantages:  

Silica gel is divided into two categories, one is liquid silica gel, the other is solid silica gel.  

Solid silica gel is colorless.Besides,it feel like human skin, feeling very comfortable, soft, in appearance. It can do a variety of effects, styles.  Those phone cases with very kawaii patterns are basically made of solid silica gel.  Waterproof ability is very strong.  

Liquid silicone  

Feels a little better than solid silicone, soft to the touch.  Good elasticity, shockproof effect bar, slow aging, long service time.  But I think its biggest characteristic is safe, is edible grade product, baby's pacifier is made of liquid silica gel, its safety is absolutely guaranteed.  

Disadvantages:

Easy to be stained with dust, dirty, difficult to clean.  Poor thermal conductivity.  By increasing the thickness of the phone, the user experience may decrease slightly. Waterproof ability is also his disadvantage, because accidentally put sweat or what other water into the phone case, it is difficult to evaporate.  

The metal 

                                                           Photo by Phil Desforges from Pexels

Advantages:  

The appearance has the texture, is the kind of cool feeling, more dirty, easy to clean, not easy to wear.  

Disadvantages:

Although it is made of aerospace aluminum, it still adds weight to the phone.  Mobile phone fell to the ground, probably mobile phone case is ok, mobile phone has something.  It could affect cell phone signals.  

The wooden

                                                           Photo by Phil Desforges from Pexels

Advantages: 

Feel and hardness and PC phone case is similar, but because it is wood, you can plate him, like a walnut.  And every stripe on the wood is different. It has a lot of personality.  

Disadvantages:  

It's more expensive. Be careful when disassembling. It's made of wood, after all.  Usually also should pay attention to maintenance, can not touch the water, the wood will become wet, also has an impact on the heat dissipation of the mobile phone.  In most cases, it only serves as decoration and has little protective effect on the phone.  

Wooden phone case:http://www.spdgroupeco.com/Woodenproducts/129.html