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Meta will open up the operating system that runs on its Quest mixed reality headsets to other technology companies, it announced today. What was previously simply called Quest software will be called Horizon OS, and the goal will be to move beyond the general-use Quest devices to more purpose-specific devices, according to an Instagram video from Meta CEO Mark Zuckerberg. There will be headsets focused purely on watching TV and movies on virtual screens, with the emphasis on high-end OLED displays. There will also be headsets that are designed to be as light as possible at the expense of performance for productivity and exercise uses. And there will be gaming-oriented ones. The announcement named three partners to start. Asus will produce a gaming headset under its Republic of Gamers (ROG) brand, Lenovo will make general purpose headsets with an emphasize on "productivity, learning, and entertainment," and Xbox and Meta will team up to deliver a special edition of the Meta Quest that will come bundled with an Xbox controller and Xbox Cloud Gaming and Game Pass. Users running Horizon OS devices from different manufacturers will be able to stay connected in the operating system's social layer of "identities, avatars, social graphs, and friend groups" and will be able to enjoy shared virtual spaces together across devices. The announcement comes after Meta became an early leader in the relatively small but interesting consumer mixed reality space but with diminishing returns on new devices as the market saturates. Further, Apple recently entered the fray with its Vision Pro headset. The Vision Pro is not really a direct competitor to Meta's Quest devices today—it's far more expensive and loaded with higher-end tech—but it may only be the opening volley in a long competition between the companies. Meta's decision to make Horizon OS a more open platform for partner OEMs in the face of Apple's usual focus on owning and integrating as much of the software, hardware, and services in its devices as it can mirrors the smartphone market. There, Google's Android (on which Horizon OS is based) runs on a variety of devices from a wide range of companies, while Apple's iOS runs only on Apple's own iPhones. Meta also says it is working on a new spatial app framework to make it easier for developers with experience on mobile to start making mixed reality apps for Horizon OS and that it will start "removing the barriers between the Meta Horizon Store and App Lab, which lets any developer who meets basic technical and content requirements release software on the platform." Pricing, specs, and release dates have not been announced for any of the new devices. Zuckerberg admitted it's "probably going to take a couple of years" for this ecosystem of hardware devices to roll out.

When looking to buy a laptop , you are often reminded about the 4-cell battery but do not understand it clearly. You wonder about the usage time of laptop batteries. The following article will provide you with information about 4-cell batteries as well as answer questions about how long a 4-cell battery laptop will last. Please follow along! 1. What is a laptop battery? Laptop battery is the part that stores and provides energy for the device to operate. What is a laptop battery? The battery will convert energy from chemical energy into electricity during use. 2. How many types of laptop batteries are there? Laptop batteries are divided into 2 types: - Lithium-Ion (Li-Ion) battery : Uses an organic solvent liquid to exchange ions between electrodes. Lithium-Ion Battery (Li-Ion) - Lithium-Polymer (Li-Po) battery : Does not use a liquid electrolyte but uses a dry polymer sandwiched between the negative and positive terminals of the battery to exchange ions. 3. How long does a 4 cell, 6 cell, 8 cell, 9 cell laptop battery last? How long a laptop battery lasts depends on the type of battery: Li-Ion or Li-Po, how many cells the battery has, as well as what you use the laptop for, its size and battery life. Brighten your screen. How long does a 4 cell, 6 cell, 8 cell, 9 cell laptop battery last? Please follow the usage time statistics table of the battery types below to choose the right battery type for your intended use. Note : The information below is compiled from many sources and is for reference only, not the most accurate compared to reality. Thank you for your note. - Lithium-Ion battery   Li-Ion 11 - 13 inches 14 -15 inches 17 inches 4 cells 2 hours 30 minutes 2 o'clock 1 hour 40 minutes 6 cells 3 hours 30 minutes 3 hours 30 minutes 2 hours 30 minutes 8 cells Do not have 4 hours 3 o'clock 9 cells Do not have 4 hours 30 minutes 4 hours - Lithium-Polymer battery   Li-Po 11 - 13 inches 14 -15 inches 17 inches 4 cells 4 hours 3 hours 30 minutes 3 o'clock 6 cells 6 o'clock 5:30 a.m 5 hours 8 cells Do not have 7 hours 30 minutes 7 o'clock 9 cells Do not have 8 o'clock 7 hours 30 minutes Note : Battery life will vary depending on the battery level and the tasks on the laptop you use. 4. Some frequently asked questions How long is the usage time of the 3 cell battery? Depending on each person's needs, the usage time will vary. If you perform simple tasks of listening to music, surfing the web and connecting to WiFi, the duration will be 2 hours. How long is the usage time of the 3 cell battery? How long does a 4 cell laptop battery last? The 4-cell Li-Ion battery can only be used for about 2 hours, while the 4-cell Li-Po battery can be used for about 3 to 4 hours. How long does a 4 cell laptop battery last? How many hours can a 6 cell laptop battery last? The 6-cell Li-Ion battery can run from 2 to 3 and a half hours while the 6-cell Li-Po battery can run from 5 to 6 hours depending on the device type. How many hours can a 6 cell laptop battery last? Should or should not replace battery cells for laptops? You should not replace the battery cell for your laptop because not only is the cost quite high, but replacing the wrong battery cell of poor quality can cause the laptop to short circuit and be damaged. Should or should not replace battery cells for laptops? Should I remove the battery when using it? Do not remove the battery when in use because it may lead to battery damage.

The screen is the most easily damaged part of the phone after a period of use. The condition of the screen having errors with horizontal and vertical stripes and image noise is a very easy sign to recognize. What is the cause of the striped phone screen error and how to fix it? Please follow the article below with MediaMart to get the answer!  first. Signs Of Phone Screen Streaks Below are signs that your phone is experiencing a striped screen error:    Phone screen has stripes  The phone screen appears interlaced stripes and the screen turns white and blurry  The screen has stripes but users can still use the touch screen  The screen has vertical and horizontal stripes but the touch screen is disabled  2. 8 Reasons Why Your Phone Screen Has Stripes In fact, there are many reasons why your phone screen has this condition:  Due to the screen cable being loose or flickering  A loose or flickering screen cable is the main cause of this error in the phone. When the cable is loose or unstable, it will cause the screen to display intermittently and also cause horizontal and vertical stripes to appear.  The cause is due to physical impact on the screen  One of the causes of a striped screen can also be caused by your phone being dropped, hit hard, or often put under heavy pressure. This will cause the system of internal electronic circuit boards to be affected, thereby causing this error in the phone  Because the phone was soaked in water  If you accidentally drop your phone into water, it will damage the electrical circuits inside the device. This is also one of the reasons why the phone has stripes on the screen or worse, touch paralysis.  Due to screen error  Screen errors due to problems during manufacturing and installation from the supplier are also common causes that you can think of.  The phone is magnetized  Another important reason why the screen has stripes is because the device is magnetized. The reason is because users often place their phones near highly magnetic transmitters: speakers, magnets, broadcasting stations... If the phone is magnetized, it can cause internal components to fail and the phone screen to malfunction. Phone is no exception.  Caused by software conflict  In addition to the above reasons, if your phone has a software conflict, it will also cause streaks to appear on the screen.  Due to hardware failure  Hardware problems: broken IC circuits, cable sheaths... can also be the cause of vertical and horizontal stripes appearing on the phone screen.  Due to poor quality screen replacement    If users buy a used device or have had their phone screen repaired at a low-cost, unreliable store that replaces a poor quality screen, they will also encounter this error when using it.  3. Instructions On How To Fix A Phone With Screen Stripes Restart your phone  One of the simplest fixes if your phone experiences screen stripes is to restart the device. You can try restarting the phone a few times because it may be due to a software or operating system conflict.   Restore the phone's factory settings  You can also restore the phone's factory settings if the screen is slightly streaked. A hard reset will help your phone get rid of junk or error applications to help the screen return to normal  Pat the phone gently to fix it  You can also try patting the phone a few times to fix the striped screen error. Sometimes when you accidentally drop your phone and cause the screen cap to become loose, you can apply this method to fix it Phone repair at reputable centers  If you have tried the above methods and it doesn't work, then bring your phone to a repair shop or reputable warranty center for inspection and repair. Here, specialized technicians will advise on the cause and the best repair plan for your phone.  Besides the above remedies, you should also limit your phone to areas with high potential for magnetic contamination such as broadcasting stations, speakers, magnets... Or avoid dropping, bumping or letting your phone fall into it. Water will help increase the life and protect the phone better.    Above, MediaMart has shared the causes and ways to quickly fix striped phone screens. Hopefully these shares will help you find a suitable repair method and use your phone effectively. 

What to do when you have calf cramps? Stretch your legs Stretch your legs to reduce cramps. Stretching your legs is a cramp treatment tip that you should remember to do every time you experience one. With this treatment, you should do the following: Stand on the step with half your foot then slowly raise your heel You should hold that position for 30 seconds to stretch your muscles Apply this method about 8-10 times and it will heal very quickly Massage the cramped area Massage the cramped area to relieve muscle tension. According to Vinmec International General Hospital, when you have cramps you can massage the area to reduce muscle tension. This massage method involves stroking around the cramped area to warm up the skin and heal quickly. However, this operation needs to be gentle or you can use a massage roller to increase effectiveness. Warm the painful area Warm the cramped area. When cramping, the affected area will be a bit painful, so warm the painful area to remove muscle tension. Each time you use it, use a heating pad or a hot water bottle to apply to the cramping area to relieve pain. Stand up barefoot Stand up barefoot to reduce the feeling of muscle tension. Another very simple but extremely effective way is to walk barefoot on the floor, move your toes or rest your toes on the floor to stretch your legs. Although this step is simple, it helps blood circulation and reduces cramps. Move your toes Move your toes to effectively reduce cramps. Moving your toes also helps reduce cramps effectively. The method is to just raise the toes up so that the angle is about 60 degrees. Repeating this method several times will help reduce cramps. Acupressure Foot reflexology to reduce cramps. You can also completely apply acupressure to effectively treat calf cramps. To reduce cramps, you can press the acupoint located between the two big toes and the next toe or the acupoint between the lip and nose to quickly cure cramps. 23 tips to treat calf cramps quickly and effectively Use ginger water Use ginger tea to bring more nutritional value. Ginger tea can bring many nutritional values ​​and uses to us humans. Which can help reduce pain and prevent cramps. According to research in 2001, ginger tea has the ability to significantly reduce knee pain such as osteoarthritis, etc. Therefore, you should drink ginger tea to improve your health and prevent some diseases. Use pepper Pepper can have many uses. In addition to being used as a spice to make many dishes more attractive, pepper also brings many useful effects to us humans. Pepper can support good digestion, cure some diseases such as cold stomach pain, cholera, stomach ulcers, diarrhea,... In addition, pepper also helps treat joint diseases such as arthritis, stimulates the brain in That can reduce cramps. Use Chinen salt Chinen salt is used to treat and prevent cramps. Using Chinen salt is also an extremely effective way to help treat and prevent cramps . In addition to some uses of Chinen salt such as treating diabetes, preventing diarrhea,... this ingredient can also help you avoid cramps. Chinen salt contains minerals such as potassium, calcium , sodium or magnesium necessary for the body. This helps the body have enough nutrients to compensate during exercise or overwork. 3Causes of calf cramps Causes of calf cramps. There are many causes of calf cramps , which often occur when you are too busy exercising or exercising without warming up properly. In addition, when muscles are tired from prolonged or too vigorous exercise, the body loses electrolytes, leading to cramps. Calf cramps can also occur when sleeping, in people who are too tired during the day or stand too long on the ground, causing the leg muscles to not relax. That's why it causes cramps while sleeping. 4How to prevent calf cramps Mineral supplements Mineral supplements It is necessary to supplement minerals such as calcium, magnesium, and potassium into our body regularly to improve health. These nutrients are directly related to muscle contractions. If lacking, they will cause muscle spasms and cramps. Drink enough water Drink enough water every day. Drinking enough water is also one of the ways to prevent cramps. You should drink enough water every day, the amount of water in your body depends on the age and gender of each person. While being active or playing sports, replenish your body with water regularly. Stretch after exercise You should stretch after exercising. One tip to prevent cramps is to stretch after exercising. Before and after exercising, you should practice warm-up movements to stretch your leg muscles. This way will help your skeletal muscles adapt promptly and no longer have calf pain. Take a hot bath with sea salt Bathing with sea salt provides many nutrients. A direct way to provide nutrients to our body is to take a hot bath with sea salt. This method helps the body supplement nutrients such as sodium chloride, calcium, magnesium,... which are extremely necessary to avoid cramps. Above are some information and tips to treat cramps extremely quickly and bring immediate results. Try these tips, hope this information will be useful to you.

Hard drives of computers and laptops getting full after a long time of use is a common problem for many people. Freeing up C drive space would be a suitable solution. Follow the article to learn more ways to free up C drive space on your laptop! 1. Reasons why C drive is full - Installing too much software The first common reason why your computer's C drive is full is that the computer contains too much software. Users often do not have the habit of deleting unused software or software that is not necessary for their work, thereby causing these "redundant software" to take up a fair amount of space on the hard drive. computer. Users do not often delete unnecessary software - Trash cans are not cleaned Did you know, when you delete any file, that file will not immediately disappear forever but will be stored in the Recycle Bin? If you don't delete those files for too long, the capacity of your C drive will be greatly reduced. C drive capacity will be reduced if files in the Recycle Bin are not deleted - Too many junk files and temporary files During operation, the computer will generate a lot of temporary files and junk files, because the computer often stores all user activities. These temporary files will be moved to drive C. If these files become more and more, it will not only fill up drive C but also affect the performance of the computer. Junk files also affect computer performance - Due to Virus Some anti-virus software being sold at Mobile World:               Viruses are also a cause for great concern and concern. Viruses coming from many different sources will enter the C drive and reproduce continuously every second. They will cause the C drive to become more and more corroded, thereby reduces hard drive capacity. The virus will continuously produce and erode the C drive - Due to Windows update file Windows update files are one of the reasons why C drive is full. Normally, Microsoft will release updates for Windows 10 to improve and upgrade the device's performance. But, after these files are updated, they still do not delete themselves but are stored in drive C, taking up storage space and wasting memory. Microsoft regularly releases many updates HUNT NOW FOR TGDD DISCOUNT CODE HERE!! 2. How to free up C drive space in detail     - Cleanup trash To empty the trash, click on the Recycle Bin icon on the screen > Press Ctrl + A > Right click and select Delete. Perform a trash cleanup See more cleaning software in the following article: 13 free and effective software to clean and speed up Windows 10 computers - Remove unnecessary software While using, sometimes you will accidentally download software and programs to your computer that you may not use and it takes up a lot of space on drive C or other drives. So please remove them to have more space for other important software and applications. You can refer to the following article to know how to properly remove the software: 3 ways to remove software on Windows 10, 8, 7 computers quickly and effectively - Delete temporary files Step 1 : To find the temporary file, press the key combination Windows + R > Enter %temp% > Click OK . Perform a temporary file search Step 2 : In the folder containing temporary files, press the key combination Ctrl + A > Click Delete . Delete temporary files - Clear browser memory Every time you access the web browser, the system will automatically store it and will take up a lot of disk space and reduce page loading speed. Therefore, to free up drive C, providing larger storage space, you should also clear browser memory. Not clearing browser memory will take up disk space and reduce page loading speed Visit the article below to see how to clear browser memory: [Video] Extremely simple way to delete cache and cookies on any browser - Delete unnecessary and duplicate files Note : You should only delete really unnecessary files or duplicate files, avoid deleting important files that lead to system errors. Let's start finding and deleting these duplicate files by using Ccleaner software and following the steps below: Step 1 : Open Ccleaner software > Select Tools > Click Duplicate Finder > Select the hard drives you want to scan (C/D/E) > Select Search . Perform a search for unnecessary files Step 2 : Select duplicate files > Click Delete Selected to delete. Select duplicate files and delete - Delete files in Downloads section To delete files in the Downloads section, first move to the Downloads folder in drive C, then check to see if there are any unnecessary files. If so, delete them by clicking on the file . want to delete > Click Delete . Or if you want to delete everything, press Ctrl + A > Click Delete . Delete the file in the Downloads section - Delete Windows Update update files Windows Update update files are also one of the common causes of filling up the C drive. To free up the C drive, you should delete these files periodically, not wasting the drive. See detailed instructions on how to delete Windows Update update files here: How to delete updates, uninstall updates on Windows 10 computer - Use external storage Another optimal solution to help overcome the situation of C drive being full is to use USB , memory card or external hard drive for storage to avoid overloading the computer's hard drive at an appropriate cost and storage space. Extremely large, up to tens of GB, allowing you to comfortably store a lot of software and data. Besides, you can use cloud storage services such as: OneDrive , Google Drive , Dropbox ,... with the outstanding advantage of being free of charge, easy to download and use provided the computer has can connect to the Internet. Offload disk memory from external storage solutions - Delete Delivery Optimization Files Delivery Optimization Files are data of files previously downloaded on your computer. You can delete Delivery Optimization Files, following these simple steps: Step 1 : Right-click drive C > Select Properties . Right click on drive C Step 2 : In the General section, click Disk Cleanup . Click on Disk Cleanup Step 3 : Check the box at Delivery Optimization Files > Click OK . Check the box at Delivery Optimization Files - Use the Disk Cleanup feature Disk Cleanup is a tool available on Windows that helps you reduce the memory load on the C drive from that junk data. To use this feature, first do the same 2 steps as deleting Delivery Optimization Files. Then, in step 3, check the files you find unnecessary > Click OK to complete. Select unnecessary files and click OK - Turn off Hibernate feature (Hibernate) Hibernate is a feature similar to Sleep. However, in Hibernate mode, the current session's data will be saved on the hard drive, the computer will not use electricity, and will turn off completely like when you shut down the computer. Turning this feature off will prevent data from being saved to your device's hard drive. You can turn off the Hibernate feature by following these steps: Step 1 : Select the ^ icon (Show hidden icons) on the taskbar > Right click on the battery charging icon > Select Power Options . Open Power Options Step 2 : Select Choose what the power button do . Select Choose what the power button does Step 3 : Click on Change settings that are currently unavailable . Click on Change settings that are currently unavailable Step 4 : Uncheck the Hibernate box > Select Save changes to turn off this feature. Uncheck the Hibernate box and select Save changes - Delete unused Windows accounts To delete an unused Windows account, follow these steps: Step 1 : Open the Settings application > select Accounts . Select Accounts in the Settings app Step 2 : Select Family & other users > In the Other users section, select an account you want to delete and select the Remove button to complete. Select the account you want to delete and click Remove - Scan and remove viruses for computers To avoid wasting drive C, you should scan and remove viruses on your computer. Removing computer viruses not only provides data storage space but also helps the computer operate better, avoiding more risks during use. See now how to scan and remove viruses for your computer in the article below: [Video] How to remove viruses on Windows 10 computers simply and quickly Scanning and removing viruses is a useful method for computers 3. Answer some questions - What if drive C has many large files that cannot be deleted forever? Answer : Because these are important files or files that are being used in an open program, if deleted, it will affect the computer system, so you should not delete those files to avoid causing damage. error. Do not delete important files - Tried many ways but C drive is still full? Answer : In this case, you should delete unnecessary software - software that you feel is not used for any purpose at all, wasting drive C. 4. Laptop warranty policy at Mobile World Note : The warranty policy updated on October 4, 2022 may change if you refer to it on another day, see the most accurate update HERE . When buying a laptop at Mobile World, you will enjoy the following warranty policy: - Exchange anything for 12 months at 3,333 supermarkets nationwide (first month free). - Genuine 1-year laptop warranty at manufacturer warranty centers.  

Step 2 : In the Disk Management window , create a virtual drive file and virtual partition by clicking Action => then select Create VHD (as shown below). Step 3 : The Create and Attach Virtual Hard Disk window appears, here we will indicate the location to save the virtual drive file on the computer and its capacity. You select Dynamically expanding in the Virtual hard disk type section (you can follow the instructions in the image below) => finally click OK to proceed with the process of creating a virtual drive on Win 10. At this time, a new partition will appear with the temporary name Disk 1 (as shown below). Step 4 : Next, we will optimize the newly created virtual drive (VHD), by right-clicking on Disk 1 => then click Initialize Disk to run the optimization program for the drive => when exporting A pop-up notification window appears , click OK (as shown below). Step 5 : Continue, create a Volume from the virtual partition, by right-clicking on the virtual partition => then click New Simple Volume... ( as shown below). Immediately after that, the New Simple Volume Wizard dialog box will appear => click Next to continue (as shown below). Step 6: In the new window, select the memory capacity for the Virtual Volume => then click Next (as shown below). Enter the letter symbol for the virtual Volume in the next window and click Next (as shown below). Step 7: Next, name the virtual Volume in the Volume label section then click Next . Finally, click Finish to complete creating the virtual drive volume. As a result, we will have a virtual drive on Win 10 that exists in parallel with other physical drives available on the operating system (as shown below). How to disable and re-enable virtual drive (Virtual Hard Disk) on Windows 10 Creating a virtual drive on Win 10 has been completed, in case you temporarily turn off or disable and re-enable this virtual drive. The way to do it is very simple, you do the following. Temporarily turn off the virtual drive If you want to disable the virtual drive to increase your computer's memory, just right-click on this drive => select Eject (as shown below). Don't worry because this will not completely delete this virtual drive. Activate Windows 10 virtual drive after deletion Step 1: To re-enable the virtual drive after disabling it, open Disk Management ( Windows + R => then enter the command diskmgmt.msc => and press Enter ). Step 2 : Then go to Action => then select Attach VHD => continue to find the previously set VHD file => and click OK . At this point, the virtual drive will reappear on the computer, and all of your previously stored data will still be intact. Additionally, in the Disk Management window , to temporarily disable the virtual drive by clicking on Disk 1 => then select Detach VHD , this method also does not lose data in the virtual drive. Method 2: Instructions for using Ultraiso software to create virtual drives on Windows 10 Using the utility available on Windows 10 to create a virtual drive has the slight advantage of not needing to install software, but it requires a little more work. As for UltraIso software, creating virtual drives on Win 10 is a bit simpler. You do the following: Step 1 : First you need to download Ultraiso to your computer. To activate the copyright, you can find more documents on the Internet. Step 2 : After downloading, install Ultraiso software as usual. Then, the software will automatically create a virtual drive for the user as shown below. Step 3: Open the Ultraiso software, the software's working interface is as shown below. By default, Ultraiso has already created a virtual drive for you. If you want to create more than one virtual drive, follow the instructions below. Step 4: On the main interface of Ultraiso, click Options => then select Configuration .. => continue to select the Virtual Drive tab in the new window that appears => and select the number of virtual drives you want to create (maximum of 8 virtual drives can be created). And as a result, we created 8 virtual drives on Win 10. Erase virtual drive using Ultraiso Creating a virtual drive on Win 10 is simple, deleting a virtual drive with Ultraiso is equally easy. By clicking Options on the main interface of the software => select Configuration... => select the Virtual Drive tab => continue to select None in the Number of devices section as OK . How to Mount .ISO file to virtual drive You do one of the following three ways to mount the *.iso file to a virtual drive. Method 1 : Right-click on the *.ISO file to Mount => then select UltraISO => click Mount to drive X: (where X is the name of the virtual drive you created in This PC). Method 2 : Right-click on the virtual drive => click UltraISO => then select Mount... => and select the path to the .ISO file as OK. Method 3: Click Tools => then select Mount to Virtual Drive or press F6 key => find the path to the iso file, select it => then select Mount and the program will automatically work. Above are instructions on how to create a virtual drive on Windows 10 using tools available on the computer and Ultraiso software. Wishing you success in creating a virtual drive!