Technology review for every Zambian

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From our web stories follow the link and learn more about these technology reviews for every Zambian. Lensesview is here to guide and help you with the latest trends, information security, system setups, and top tips.

  • Want to quickly check if your home microwave is leaking? try this simple test

    Want to quickly check if your home microwave is leaking? Try this simple test using your cell phone. This test is a quick and easy way to check for leaks, however, it is important to note that it is not a 100% accurate method and the best way to check for leaks is to use a microwave leak detector or have a professional inspect and repair the microwave if you suspect a leak.

    Warning: Never turn on the microwave while your phone is inside. It will be fried.

    Here are the steps to quickly check if your home microwave is leaking. Try this simple test using your cell phone:

    1. Connect one of your phones to a WiFi network with a 2.4GHz frequency. Most home WiFi use 2.4GHz. If your wifi has a dual-frequency (2.4GHz and 5GHz) then adjust for it to operate only on 2.4GHz.
    2. Take a second phone and connect it to the same 2.4GHz WiFi network.
    3. Place the first phone (the one you initially connected to the WiFi) inside the microwave and close the door. (Please do not under any circumstance turn on the microwave)
    4. Using the second phone (also connected to the same WiFi network) to make a WhatsApp call to the first phone.
    5. If the phone inside the microwave rings, it means that there is a leak in the microwave’s door seal or a problem with the microwave’s radiation-shielding system.
      If the call does not connect or you cannot hear the ringtone, it means that the microwave is sealed and there is no leak.
    This test assumes the fact that cellular data transmits and receives signals between 800 and 1900 Megahertz (MHz) while microwaves emit a 2.4 GHz signal
    The microwave oven can be used to cook food, even warm leftovers

    It’s important to note that this test is not 100% accurate. This test is based on the fact that cellular data transmits and receives signals between 800 and 1900 Megahertz (MHz) while microwaves emit a 2.4 GHz signal which is higher than the frequency of cellphones, that’s why if the call connects using the WiFi at 2.4GHz it means there is a leak.

    But, the best way to check for leaks is to use a microwave leak detector or have a professional inspect and repair the microwave if you suspect a leak. This simple test will point you in the right direction.

    Additionally, it is not safe to operate a microwave oven with the door open, or with any gaps or holes in the door seal. So, please do not use the microwave if you suspect it has a leak.

  • How to build an android app to automatically block persistent calls

    Especially for students looking to do a project here is the summary of how to build an android app to automatically block persistent calls.

    With the advent of smartphones, communication has never been easier. Gone are the days of missing important calls because you were away from your landline phone whether at home or in the office. Now, with the convenience of mobile phones, we can stay connected at all times.

    Mobile phones interrupt us even when we are having the most intimate of congenial time

    Yes, with this constant connectivity comes the need for phone etiquette. We’ve all been in situations where we’ve been on an important call or working on an important task, only to be interrupted by a persistent caller. Maybe you’re giving a sales demonstration on your laptop and a friend calls to chat, but you don’t pick up because you don’t want to lose your internet connection. And then, as soon as you hang up, that friend calls back again and again.

    If you’re tired of dealing with persistent callers or you have conceived of such a scenario, at Lensesview we have a solution for you. This is a project idea for students looking for their capstone or those looking to build an android app.

    And in this summary, the android app to be built is aimed to block persistent calls that are made within a specific time frame with a specific response. Whether you’re in an important meeting, you’re feeling under the weather, or working on a deadline and want the most time to yourself, the proposed app should be built to ensure that you won’t be bothered by unwanted calls.

    Exactly, this is a great idea for a student interested in android app development or anyone picking up to build an android app for fun. For starters, It requires some understanding of the android SDK and Java programming language but it’s a great way to make a difference in people’s lives.

    Summary: How to build an android app to automatically block persistent calls

    To create an android app that can automatically block persistent phone calls, you would first need to have a good understanding of the Android SDK and Java programming language. Here is a high-level overview of the steps you would need to take:

    1. Use the Android SDK to create a new project and set up the necessary files and structure for the app. For instructions to create Android SDK see this topic
    2. Use the TelephonyManager class to listen for incoming phone calls and determine the phone number of the caller. Follow these instructions in TelephoneManager class.
    3. Use a HashMap or ArrayList to store the phone numbers of callers who have called within a certain time period, for example, 10-30 seconds.
    4. When a new call comes in, check the caller’s phone number against the stored numbers to see if they have called recently.
    5. If the caller has called recently, use the Call blocking feature to automatically block the call.
    6. You may also want to include a user interface for the app that allows users to view and manage the list of blocked numbers.

    Additional Notes On how to build an android app to automatically block persistent calls

    • If you are planning to use the Call blocking feature you need to check if the device supports it.
    • If the device doesn’t support the call-blocking feature you can look into other alternatives like blocking the call with the help of third-party libraries.
    • If you are planning to publish the app in the Google Play store, you need to comply with the store’s policies.

    It’s a complex project and requires knowledge of android SDK and Java but with help from all around the internet, this is a project that can take on no more time. As a student or IT pro just for the hobby, you can think of How to build an android app to automatically block persistent calls.

  • What is the PowerShell command to let you know how long a computer has been on

    PowerShell is rather an amazing powerful scripting tool. For example, PowerShell can allow IT pros to automate most of the work and allows for remote access and work seamlessly while maintaining the highest level of security.

    But for now, we are interested in the PowerShell command that can show us how long a computer has been on:

    (Get-Date) - (gcim Win32_OperatingSystem).LastBootUpTime
    

    This command uses the Get-Date cmdlet to get the current date and time, and then subtracts the value of the LastBootUpTime property of the Win32_OperatingSystem class, which returns the date and time the operating system was last started. The result is the amount of time that has elapsed since the last time the computer was started.

  • CSS: How to set line height in WordPress bulleted item list

    How do you set the line height in WordPress bulleted item list? Depending on the WP theme you are using by default the bulleted item list line height spacing will be different from that set for the normal paragraphs.

    To set the line height for a bulleted list in WordPress, you would use the CSS property “line-height” in your stylesheet. Here is an example of how you might use this property to set the line height to 1.5:

    ul li {
        line-height: 1.5;
    }
    

    This will set the line height for all list items within unordered lists on your WordPress site to 1.5. You can adjust the value as needed to achieve your desired spacing.

    Also Good Reads: What is WordPress?

    In order to easily achieve this you might head to the customizer in your WordPress dashboard, instead of the theme editor or cPanel file manager, and in the Additional CSS section insert the code. CSS code will be applied sitewide.

    Also ensure to make a backup of the files you want to change before modifying them. From experience, WordPress file modification sometimes leads to site breaking up.

    In conclusion, to set the line height for a bulleted list in WordPress, you would use the CSS property “line-height” in your stylesheet and also remember to create backups before altering code on your WordPress site.

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