Recently, world is developed all around the world so fast. Especially, in smartphones, they become faster, lighter, and better in some fields. However, some firms might make a mistake even if they wanted to make the smartphones better. There is a perfect example about this problem. iPhone 8 made by Apple is a big issue these days. From now on, I will tell you the iPhone 8's problem.

▲ The phenomenon of iPhone 8`s swelling

iPhone 8's problem is battery swelling. Battery is made by Korea, China and Japan. At this moment, Swelling is that as the battery keeps charging and discharging, the battery is swollen due to the gas generated from the electrolyte inside the lithium ion battery. This swelling happened in Japan, US, China, and Canada. It becomes serious.

China's firm said that the problem is in Korea because the similar issue happened last year in Korea. That issue was about the Galaxy Note 7's explosion. It also happened because of the batteries. There is two type of batteries and the real explosion battery was the A type, but also B type had some problems so it blowed up. The firm making the battery is the same as the Galaxy Note 7, but it said they buried in the battery's safety.

Around the iPhone 8, people's opinions are different each other. A supporter with the phone say its speed is so fast and it is great to have wireless recharging technology. On the other hand, others say why the iPhone 8 and X appear at the similar time. Also, Apple decreased the 8's output and increased the X's. Then the opponents think whether the 8 is undoubtedly necessary.

Even if there is some controversial aspects, iPhone 8 will be started to make a reservation on October 27 and sell on November 3. Because of this, a lot of people discuss with this topic each other so hot.

▲ Apple`s iPhone 8