Testing Simulators Vs Emulators Against Real Devices

Testing Simulators Vs Emulators Against Real Devices

Web Testing and App Testing has always been crucial component of the entire development process. Testing is the process of identifying and resolving issues – whether it’s identifying problems with navigation, problems with sign-up forms, interruptions in payments, or simple differences in the size of fonts. Testing can also make sure that any change does not affect the user experience on different devices.

The most important aspect of having an efficient testing process is the equipment on which the test is conducted. A thorough test procedure could produce a variety of test results when it is run using different devices. Therefore, the importance of the device used to test is vital. It is more important when tests on smartphones because of the many different devices, which have various operating systems, browsers, and configurations for hardware.

Let’s look at the various mobile devices to gain a better understanding.

Different types of Mobile Testing Device Solutions

As technology has advanced over time, testing has also witnessed its share of advances in the various devices for testing mobile phones which came into existence. Mobile testing tools were designed to allow cross-browser testing of web pages and mobile application testing on different mobile phones, by studying the behavior of the application, its function as well as UI aspects.

The primary reason behind this type of testing is to ensure the same performance of the website and application on various mobile devices. Because the devices vary in the hardware settings, the operating system as well as screen size, what may perform in a particular manner on one device may not work on the other.

There are two kinds of mobile devices that testing is carried out:

What is a real Device?

The real testing devices are diverse models of mobile phones which are used to run the website or application to examine its performance and behavioral patterns. 

Typically, testing teams buy several mobile phones that run iOSBlackberry, Android tablets, and phones, along with iPads for testing their computer.

Development of Testing Devices From real to virtual Testing Devices

The results that are generated from testing with real devices are extremely precise, the expense of testing is on the high end because the business is required to purchase several devices and keep them updated at periodic intervals when new devices are introduced to the market.

Testing using real devices was a major hurdle that companies have overcome by creating virtual testing devices, like Simulators or Emulators. Therefore, virtual testing Simulators vs Emulators equipment was introduced to regular use when conducting cross-browser compatibility tests for software.

What is a Virtual Testing Device?

The Virtual Testing Device is a computer program that, unlike a device, provides a simulation for the majority of the key functions of a smartphone. It replicates the functionality of the smartphone and allows testers to run the application software on it in order to gain an understanding of what it could run on the actual device.

While virtual testing devices are able to be akin to devices and cost-effective, however, they cannot be used to replace real devices due to their accuracy and reliability.

There are two kinds of testing devices that are virtual:


An Emulator is a piece of software that mimics both the software and hardware of the device within your PC. It does that by translating the ISA (Instruction Set Architecture) of the device you are trying to emulate to that of the computer you’re using to test through binary translation.

ISA refers to the instructions created using Machine Language by each of the processor families. they utilize to construct an individual device’s configuration that outlines the functions and behaviors of the device.

By translating your ISA of the mobile device to your PC it will be able to mimic how your device functions, creating an environment that simulates the device for testing.

However, these capabilities that are near to the native of the mobile device in question allow you to modify the physical sensors and geolocation. However, they are at the expense of latency.

Android emulators, Galaxy emulators, and iPhone emulators (which is a slang term for iPhone simulators in actuality) are a few of the emulators that are widely used for testing software.


The Simulator is a piece of software that allows your computer to run certain applications designed to run on different Operating Systems. They’re mostly designed specifically for iPhone or iPad devices, but unlike Android devices, which are easily emulated.

The iOS simulators simulate iOS as well as run the software inside, running on top of the operating System. To use this iOS simulator, you have to be running macOS exclusively, since it relies on the native Apple Cocoa API. The Cocoa API is essential for the GUI as well as runtime and a host of other functions.

This creates a problem since developers must either use the MacBook or emulate macOS using their own systems.

The emulators, however, don’t mimic hardware. This means that one can’t test functions like battery use or cellular interrupts. by using simulators for testing.

Simulators And Emulators: Learn The Distinction

Although these devices for testing virtual reality are often used interchangeably for communication, in reality, emulators and simulators are different from one another in many ways.


  • The Area Targeted
  • It is offered by
  • Ideal to be used for Debugging
  • Performance
  • Example


  • The mobile device’s hardware and software and Operating System
  • Emulators are made available by the device manufacturer
  • They are secure and appropriate to help debug
  • Binary translation can slow them down because of the delay
  • Android SDK


  • The internal behavior of mobile devices
  • Simulators are offered by device makers and other companies.
  • Simulators On the other hand are less reliable and are not suitable to debug
  • Simulators run faster since there isn’t a Binary Translation
  • iOS Simulator

Real Testing Device Vs Virtual Testing Device

Virtual and real testing devices vary in their capacities.


  • Cost
  • Reliability
  • Processing Speed Debugging
  • Ideal to be used for Debugging
  • Cross-Platform Testing

Real Testing Device

  • The purchase of real devices of a large size is expensive
  • Real-time devices provide exact results and allow testing under the same conditions as the user.
  • Testing software with real-world devices can be quicker
  • Debugging issues with actual testing equipment aren’t easy, especially when it comes to capturing flaws
  • Cross-Platform Testing is typically performed with real devices

Virtual Testing Device

  • The cheapest cost is of late, one can have them installed at no cost
  • Virtual testing devices are merely a mirror of the device, but cannot simulate real-world user conditions, such as software and hardware configurations.
  • Testing of software on virtual devices can be slower because of binary translation
  • Virtual devices make debugging step-by-step simple with features that allow you to capture flaws
  • Cross-Platform Testing is able to be seamlessly carried out with virtual devices.
Testing Simulators Vs Emulators Against Real Devices

Testing Simulators vs Emulators vs Real Devices

With the capabilities each device offers When used properly, they can provide optimized results, making cross-browser compatibility testing much simpler. The most effective practice is testing with the correct devices to get better results.

Because virtual devices provide the ability to debug faster and are more efficient for use in the initial phases of developing code. 

Virtual devices will accelerate the process and be more efficient by allowing for frequent repetitions required during the beginning phases.

However, due to the accuracy aspect, Sanity Testing and User Acceptance Testing is more effective using real devices. Certain aspects of Regression testing can be performed with virtual devices, but after an amount of time, it could lead to compromised results.

Make A Leap Forward With Real Device Cloud

Virtual and real devices have advantages and disadvantages, which makes them appropriate for certain phases of testing, but not the best for other phases of testing. However, implementing a Real Device Cloud for testing could provide all the benefits of the two.

You can test your skills using a single-device cloud. It offers

  • Native real-time experience on the device with accuracy, reliability, and precision.
  • Cost savings
  • Easy debugging like virtual devices
  • App automated mobile testing to facilitate rapid testing on a massive scale
  • Live interactive, hands-free cross-browser testing and interactive testing of apps

The cloud-based device is the perfect solution for testers who want to discover bugs as well as developers who want to fix bugs easily and at a low cost.

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