LG K40 Tips and Tricks

Android 8 (Oreo)
Phone: LG K40
Factory OS: Android 8 (Oreo)

Have you updated your Operating System?
Then view tips for the most recent OS version(s): Android 9 (Pie)
Or view tips for all Android versions

If you get tired of receiving sales calls or want to block a particular number, then you can set up auto call rejects on your device.

Often you will get calls from unknown numbers. Depending on how cautious or curious you are, then normally it’s good practice to ignore such calls. If you don’t want to answer, but you’d still like to know who the call is from, then you can simply Google the number and there are a number of websites which lists phone numbers with details about the company of the caller. From these sites you can easily see if the call you received is from a dodgy company or not.

Once you have established that you want to block or reject the call in future, then open your normal Dialler App. Then go to Logs and find the number you want to block. Long press on the number and select Add to reject list.

From now on you will see that you received a missed call, however the phone will not ring and you won’t be bothered by the caller.

To manage or manually enter numbers on your reject list, then again open your Dialler App. Press your Menu key and select Call settings. Then Call rejection. Then select Auto reject list to see your reject number list. You can also manually add numbers from here

To enable or disable the vibrate function when you receive text messages go to the standard Messaging App and press More. Then Settings and then Notifications. Then select Vibrate.

If you want to find your phone’s WiFi MAC address (for improved WiFi security), then go to Settings – System – About device .

Then scroll down until you see WiFi MAC Address. The address should be a series of Hex numbers and letters.

If you tend to run out of battery power quickly, then you can turn on Power saving mode.

Pull down the notification screen by swiping your finger from the top of the phone. Then select Power Saving. You may need to scroll along the available icons.

You can also select to turn on Battery saver automatically, once battery reaches at certain level. To enable this, go to Settings – Battery – Battery saver, and then turn Automatic Battery Saver on.

If you want to go to settings, then you can go to your list of Apps and open the Settings App.

There is however a quicker way. Simply position your finger right at the top of the screen and drag it down. You may need to do this twice on some phones.

Your notification bar will appear and you can then press the small Gear icon at the top of the screen to go to the Settings.

Checking Available RAM and CPU utilization on your Lg K40 is very helpful if you are thinking about removing more Apps.

Looking at which Apps drain your RAM, CPU time, and battery will help you decide which of them should be removed from your phone.

To do this, just follow the simple steps below:

  1. Go to your phone settings. You can do this by swiping down the home screen to reveal the notification bar. From there, tap on the gear icon to open Settings.
  2. Look for Device Maintenance → Memory
  3. Alternately, you can also tap on “Data Usage,” then scroll down to see which apps are taking up CPU power.
  4. You may also look for “Smart Manager.” You will see the status of your RAM and Storage in this area. If you tap RAM, you will see a list of apps that are taking up much of your RAM.
  5. For Huawei users, you can look for “Storage” under Settings.

All methods from 2 to 4 can be accessed on the Phone Settings alone. There are certain variations, depending on your phone or unit.

This section should also show what is taking up valuable CPU time. Useful if you think some Apps are draining your battery.

Locking your phone is a great security feature, but when you’re at home it’s normally not necessary.

A featured called Trusted Places enables you to bypass the lock screen when you’re at specific geographic places.

To set it up go to Settings – Lock screen and security – Smart lock – Trusted places. You can also set up the bypass to work when your phone is connected to specific Bluetooth devices such as Smart watches or Audio devices.

You can also override this (i.e. lock your screen when it is at the location). To override, just press and hold the padlock icon on the lock screen.

This may not work on all phones, models or networks.

Here’s how to pair your device with another Bluetooth device.

First you will need to turn Bluetooth on. To do this, drag your finger from the top of the screen down, to show your notifications menu. Then press Bluetooth so the icon is green.

Then press the Scan button and your device will start to scan for pairable devices.

Choose the desired device and press Accept. You may be asked to enter a PIN or Password.

To stop the Photo App or the Music player from indexing your files, place a blank text file called .nomedia in the folder containing your photos or music.

The best way to do this is to connect your device to a PC and then navigate to the relevant folder via your PC.

While the stock standard keyboard is fine, there are much better keyboards available for the Lg K40.

First, you need to go to the Play Store and download one. Try searching for the word ‘keyboard’ and you will see a number of options.

One of the best keyboards is a keyboard called Swiftkey, which is a top-rated App. This will literally change the way you feel about your phone as the standard keyboard can be quite a frustrating experience.

Download your chosen keyboard and go through any install steps that you are presented with.

If you see a warning saying the keyboard will collect all information (including credit cards) just ignore this. This is just a security feature that Android shows for every third-party keyboard that you install.

Then, go to the App you want to type in. You should now see a little Keyboard icon on the row at the bottom of your screen, towards the bottom-right corner. Press that icon and you can switch between all of the keyboards you have installed.

Some other notable keyboards that work on the Lg K40 are GO Keyboard and Gboard (the Google Keyboard). Download and install your keyboard app of choice. Once that’s done, follow these steps to switch your current keyboard to that newly installed one:

  1. You can click on your newly installed keyboard app (icon).
  2. Most of them can assist you on how to switch your keyboard.
  3. Just follow the instructions from the new keyboard app.

How to Switch Your Phone’s Default Keyboard to A New One

You can follow the steps above because most keyboard apps can assist you when it comes to switching the default keyboard to theirs. However, you can also do it manually by going to your Phone Settings. Just follow these steps:

  1. Go to Settings and scroll down or look for the “System” sub-menu.
  2. Under “System,” tap “Language and Keyboard” or “Language and Input.”
  3. Tap “Default Keyboard” and select the new keyboard app.

Depending on your unit and model, this method could vary. For those who can’t find the “Default Keyboard” option, you can follow these steps:

  1. Under “Language and Input,” you need to look for Virtual Keyboards → Manage Keyboards.
  2. Tap your keyboard of choice to activate it.
  3. You will get a message of confirmation. Just tap “OK.”
  4. Open your keyboard. You can do this by trying to write a message, email or search.
  5. Then tap the keyboard icon.
  6. Choose the Input Method (tap on your preferred keyboard).

Done! You can change your Lg K40 keyboard’s theme, predictive text, and other settings by opening its menu. You can do this by locating the keyboard icon on your home screen, or by tapping on the settings icon when you open the keyboard for typing.