However, if you want to get goods that are smooth at a cheap price, certainly need extra observation. In addition to checking it manually, you should also check the secondhand smartphone in a further way, namely by using secret codes, especially for Android smartphones.
8 Secret Code on Android
1. *#06# - Check IMEI
Although many consider the IMEI number is not important, but in fact this number can be used when buying a used smartphone. By checking the IMEI number, you can know whether the item you bought is genuine or fake
2. *#*#4636## - Test Network
Test the used smartphone you want to buy with the SIM Card smartphone you have now. Then press the code to enter the network test mode. If a network owned by a used smartphone is the same as your new smartphone, it means that the smartphone's signal capture hardware is still functioning properly.
3. *#*#0673## - Check Audio
Used smartphone buyers sometimes love to forget the audio, either by manual or by secret code. This code can indicate whether the audio quality of the smartphone you are going to buy is still good or has problems.
4. *#*#0842## - Check Shakes and Rear Lights
Also do not forget to try to get into the vibration test mode and taillights. Do both functions of these features still work well or not.
5. *#7353# (Samsung Galaxy) - Quick Test Menu
6. *#0000#* (Samsung Galaxy) - Original or Counterfeit Check
Keep in mind, there are many fake Samsung smartphones on the market. To avoid fraud, you should try the test with this code.
7. *#0*# - General Test
Actually this test itself already includes many things, such as screen tests, touchscreen, speakers and LEDs. But not all Android smartphones can access this secret code.
8. *#*#7780## - Factory Reset
When a series of tests that you test has successfully passed the used smartphone you want to buy, press the following secret code to factory reset or return the smartphone to the factory settings.