h. GPS, Bluetooth & Wifi Test

Bluetooth, Wifi & GPS issues are quite common in android smartphones.

This test can be quite useful in identifying and troubleshooting network related issues.

i. Touch Draw Test – Manual

This is a manual touchscreen test, where we can draw on screen and identify issues related to the LG K40 touchscreen digitizer.

j. Camera (Main) Test

This is the K40 Rear Camera Test.

Under this test, we have to capture and photo and verify it as shown above.

k. Camcorder Test / Video Recording Test

Similar to the Main Camera Test, we’ve to record and verify the video as visible in the above screenshot.

l. Camera (VT) Test / Front Selfie Camera Test

In this test, only the front camera viewfinder is visible. There is no provision to capture an image.

m. FM Radio Test

Connect a headphone in your K40 headphone jack before starting this test. The headphone works as antenna for the FM Radio Test.

n. Finger Print Test

Start the test and place your finger on the fingerprint sensor which is located at the back of your K40.

You can see I’ve passed the “SPI”, “Zone”, “Checkboard” and “Rubber Stamp” test as visible above.

2. ORT Test – LG K40 Hidden Menu

The next test in the Hidden Menu after the “Device Test” is the “ORT Test”.

We’re going to change the Mode from Automatic to Manual Mode.

The first test in the test list is the “Display On/Off” test. This is basically an LCD Backlight test. The backlight keeps on turning on and off until you stop it using the stop button.

The 2nd test is the Display Patter Test. We’ve to set the time duration for this test as shown above.

The rest of the ORT tests are similar to the tests performed earlier. I’m skipping these tests. You can give them a try.

3. SVC Menu – LG K40 Hidden Menu

The 3rd option in the Hidden Menu is the “SVC Menu”.

It contains similar tests as done before. One interesting test is the Moisture Detection test. When turned on it can alert you in case your phone comes in contact with water.

4. Field Test – LG K40 Hidden Menu

The last test in the LG K40 Hidden Menu is the Field Test.

Mostly it contains network-related tests as visible in the above screenshot.

 

LG K40 Operator Hidden Menu – MetroPCS LM-X420MM / T-Mobile LM-X420TM

This Hidden Menu code works only on MetroPCS & T-Mobile K40. It won’t work on the AT&T & Factory Unlocked variant of K40.

The second Hidden Menu dialer code for K40 is 277634#*#

The options in this Operator HiddenMenu are more or less the same as the First Hidden Menu that we explored earlier.

Apart from the Hidden Menu, there are 5 more Secret Dialer Codes for LG K40 which are covered in this post.

 

For any query related to LG K30 & K40, please leave a comment below. Thanks for reading.