No AHT? No problem !

If you have a Mac, which was shipped with OS X Lion, you might have wondered that pressing  the “D” key right after the pressing the power button will not load Apple Hardware Test (AHT), in case if you wish to identify any issues in hardware of your Mac. Click on the link given below:

Using Apple Hardware Test – Apple Support

Here, it is stated : “Some Macintosh computers that shipped with OS X Lion and later support the use of Apple Hardware Test over the Internet”, but notice that the correct key or key combination that is needed to be pressed in order to initialise AHT is not given.

Let me explain how to perform the AHT over the internet.

  1. Power the laptop on. Make sure that there is an active internet connection
  2. Before the grey screen is appeared, press D and ⌥ (alt). Then the screen given below should appear. Don’t be alarmed by the terms “Internet Recovery” as that is the nomenclature given to the internet-based AHT.
internet_recovery

Figure 1 : Internet Recovery

Finally, follow the on-screen instructions. These will be the same as the ones given from Step 3 onwards, which are provided in the link above.

Hope this helps.

 

Are Those Apps Really Necessary?

I am sure all of you know that the base storage of Apple iPhone 7 is 32 GB but what if you’re still using that iPhone 6s of yours (running iOS 10.1), which is stated to have 16 GB of storage but actually has 11.88 GB of usable storage space? Take a look at the graph given below:

market-share-of-each-iphone

Figure 1 : Market Share for Each iPhone [1]

I guess there is no need to be surprised to see that there is a percentage of slightly more than 20% of iPhone 6S users when compared to that of iPhone 7 considering the huge price tag of the latest flagship phone, which means that there is a large number of people who still use iPhone 6S or 6S Plus.

Now let’s take a look at the amount of storage required for most commonly used iPhone apps such as Facebook, Twitter, Dropbox and YouTube.

facebook-in-app-store

Figure 2 : Facebook for iOS

twitter-in-app-store

Figure 3 : Twitter for iOS

dropbox-in-app-store

Figure 4 : Dropbox for iOS

 

youtube-in-app-store

Figure 5 : YouTube for iOS

 

Take a closer look at the sizes of the apps given above. Facebook for example has a size of 276 MB and it seems to be getting increased in each update of the app ! Also, there is some space of the device storage that is being used to store content such as pictures, links and video clips every time an app is in use, which is called “App cache”. This is stored in “Documents & Data” in your iPhone. The only way to clear this cache is to uninstall and reinstall the app.

Therefore, in order to save that precious space of your iPhone for your photos, music, email and other apps, why not try using the web version of apps such as Facebook and Twitter on Safari instead? Let me explain how you could do that.

  1. First, open Safari on your iPhone.
  2. On the Address bar, type “www.facebook.com” or “www.youtube.com”
  3. Tap on the icon at the bottom-centre and then tap on “Add to Favorites”

 

After finishing the browsing session, tap on “Settings” and then scroll down till you find “Safari”. Tap on that and then scroll down till you find “Clear History and Website Data” and then tap on that. Finally, switch the phone off and leave it for about five minutes and switch it back on.

If you no longer feel that apps such as Facebook and Twitter are no longer necessary, remove them and perform a “Backup & Restore” for your iPhone. More details can be found here : http://wp.me/p4kqiM-cq

 

References :

[1] Forbes Welcome. 2016. Forbes Welcome. [ONLINE] Available at: http://www.forbes.com/sites/ewanspence/2016/09/19/iphone-7-first-weekend-sales/#15540f276ba1. [Accessed 13 November 2016].