What is 2G, 3G, 4G or 5G?

This is a question I get asked a lot. What is 2G, 3G, 4G or 5G?

Simply put,  The G here stands for generation. The higher the generation, the higher the upload/download speed.

For example, here are several generations of GSM network standard (see definition below of GSM). They are GSM (2G, 2.75G), WCDMA (3G), HSDPA (3.5G), HSUPA (3.75G), LTE (4G, including FDD-LTE, TD-LTE), The G here stands for generation. The higher the generation, the higher the upload/download speed.

GSM is the full name is Global System for Mobile Communication. It’s a digital mobile communication system widely used in Europe and other parts of the world. It is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA).

Here are some tips on “How to Safely and Securely Dispose of Your Old Gadgets” | WIRED

This is IMPORTANT… If you are planning on getting rid of your old devices (smartphone, tablets, computers), PLEASE take at least (at minimum) the necessary steps to clear the device of your data. Always do a backup to ensure you have all of your files, before doing this.

Reflected below, are steps I extracted from the article (see source link below), that will help you wipe an Android device, a Windows Computer, and a Mac. I don’t know how many times I have assisted folks and they throw the old device in the closet somewhere and the device is still holding their entire life…

For Android devices, open up the Settings app then tap System > Advanced > Reset options, and then Erase all data (factory reset). Over on iOS, the equivalent option is in the Settings app under General > Reset > Erase All Content and Settings.

If you’re using a Windows computer, you need to load up the Settings app then click Update & Security, then Recovery, then Get started under the Reset this PC option. Choose to remove all personal files during the process. If you’re using a Chromebook or Chrome OS tablet, open up the Settings pane and pick Advanced, then Powerwash to get your computer into an as-new state.

It’s slightly more involved on a Mac: You need to restart macOS, then as soon as it begins to boot up again, hold Option+Command+R until you see a spinning globe. Release the keys, then choose Reinstall macOS, then choose Continue. Follow the on-screen instructions and select your main hard drive when prompted.

Source: How to Safely and Securely Dispose of Your Old Gadgets | WIRED

Here are “15 Best Free Alarm Clock App For Android In 2018”

One of the (many) uses for your smartphone is turning it into an alarm clock. The alarm clock apps in this article (see source link below) are all very good…

Best Free Alarm Clock App For Android 2018

Of course, there are many apps with these functions, as you just have to search for them. But we have searched for you and here we leave you our recommendations regarding this topic. Hence, today in this article we will present our selection of the best Android alarm clocks.

Source: 15 Best Free Alarm Clock App For Android In 2018

Chromebook’s Built-In Screen Capture Utility

Every Chromebook has a keyboard, and taking a screenshot with the keyboard can be done in a couple ways.
  1. To capture your entire screen, hit Ctrl + window switch key.
  2. To capture only part of the screen, hit Ctrl + Shift + window switch key, then click and drag your cursor to select the area you’d like to capture.

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