Why doesn't iphone4 automatically pop up when it receives SMS, and SMS preview is also open?

Apple 4 won't pop up automatically if it doesn't receive a text message. The SMS preview is opened because of the problem of the mobile phone system, which is unstable and easy to crash. Just upgrade the new system ISO9.

It's best to use tempered film for Apple mobile phone, otherwise the screen will be easily broken.

Characteristics of tempered film:

1, the surface is hard enough to scratch, even if you scrape hard with a knife, because the hardness of iron is lower than that of glass, let alone toughened. Disadvantages: fragile. Such a hard thing is made so thin, it is still relatively easy to break. If you stick it on the phone, the screen will be hit hard and the film itself will break like glass. You must change it.

2. Explosion-proof and scratch-proof: it can prevent the glass panel from being broken and scattered due to accidental impact of the mobile phone, reduce the hidden damage of the glass panel and ensure the safety of users. At the same time, it can prevent accidental scratches and affect the beauty of the mobile phone.

3, easy to use, no bubbles. The transparency of the picture is as high as 98%. Does not affect the use of mobile phone cases and other mobile phone accessories.