Mobile phone knowledge questions, a few small knowledge about mobile phones, see how many you know

1How much time is standby?

2How much memory is supported?

3Is memory expansion supported?

4How many pixels?

5 How many batteries? What kind of gifts do you give?

6How much time is the warranty? What are you covered?

7Is there a hands-free? Call***?

8Can I install jar software? Can I flash my phone for free?

10 with radio? How much and spin? Can't support real people and really sing? Can I get on QQ?

Precautions when using the mobile phone:

1.Do not overcharge and discharge, when the phone prompts a low battery, you can charge it, and you can disconnect the power supply when it is fully charged.

2.Don't charge while playing, it's best to keep charging normally.

3.Don't use your phone while driving at high speeds.

4.Do not use your phone in places that have a strong impact on electromagnetic waves and in bathrooms where water vapor is high.

The kernel mainly refers to the core functional framework part of the operating system or corresponding software, which is the basis for realizing all the functions of the software. However, it is not a software that can be used in the strict sense, and it needs to be added to the corresponding peripheral functions and human-computer interaction parts to be regarded as a software in the real sense. The kernel version refers to the version number of the corresponding software kernel after the corresponding modification or addition of corresponding functions.

The system version is easy to understand, and it is naturally the version number of the operating system.

The running memory of the mobile phone is RAM,RAM indicates 512M,But when you turn on the phone and start the system,Even if you don't open other application software,You still have to run the system and basic functions,Naturally it will occupy memory,So it is normal to detect less than 512M,Don't judge whether it is a copycat machine through this。 Hope to adopt.

The kernel version belongs to the version number of the official update, the system version is the version of your Android, the kernel version is based on the system version, the kernel version can be changed under the same system version, and the system version is higher than the kernel.

It is normal that the actual storage is less than the official marking, and the mobile phone system will inherently occupy a part of the storage, and the detection software will not count this part of the storage into the detection data. In fact, it's not just the memory, even the memory of the mobile phone is about half less than the official marking.

Because the system also takes up a portion of the memory, this is normal.

I don't know, what the landlord wants to ask.

Solutions to the lack of space:

1.If the virus infects the system files and causes a lack of space, it is recommended to use high-quality antivirus software such as Kingsoft Antivirus 2011 (free) and Kaspersky (paid) to clean up the computer and clean the disk.

2.Delete all virtual memory from the C drive.

3.Please delete some less commonly used software or larger software (such as QQ, Photoshop), delete and reinstall, please install it to other disks when installing, such as d or e, f, etc.

4.Change the [My Documents] archive path to drive D.

5.Clean up and organize your desktop's files. Generally speaking, many people like to put files on the desktop, and the desktop also belongs to the C disk, and over time it will take up a lot of space on the C disk, and directly cut the useful files on the desktop or**,*** and movies and other files,All cut to other disks,This can free up a lot of space for the C disk。

6.If you don't have enough space on your phone, it is recommended to use the free Jinzheng Rock Mountain Mobile Phone Guard to clean up viruses and junk on your phone and free up storage space.

I've also encountered a situation where both the outgoing and incoming call records are empty.

What brand of mobile phone is yours, Nokia's or some old brand mobile phones, is it 30 days of storage period, and the validity period of communication records.

This type of mobile phone, set in the text message, generally we set the mobile phone, but it can also be changed to a memory card, are you inadvertently setting the wrong one. Give it a try!

There is another situation, that is the problem of setting the date and time, the system date automatically becomes the previous time after the power is off or the battery is replaced, as long as it is set back to the current date and time.

Good luck and hope it helps, this problem is generally difficult to solve, and it is difficult to find it back.

However, the call record can be found in the online business hall!

Additional answer: In addition to which big battery in the mobile phone, there is also a small battery used to record your call messages, text messages, alarm clocks, etc., if the life of this small battery is up, your current situation will appear. Do you know the CMOS battery of the computer host? The same principle.

It is likely that it is a problem with this hardware, and it is recommended to go to a mobile phone repair point to let a professional help you troubleshoot. If it's a smartphone, it can't be ruled out that it's a problem with the operating system (it is recommended to reflash the phone).

Or maybe you accidentally deleted the call log, that is, in the dialing interface, there is a "call log" - menu "- delete call log".

Hope it helps!

Hello! Is it a smartphone?