How to Unlock the Oppo A37 Smartphone for Use on Any Carrier Network

Key Takeaways

  • Unlocking your Oppo A37 allows you to use it with any carrier network worldwide
  • There are several safe and effective methods to unlock the Oppo A37, including remote unlocking services and tools
  • Unlocking increases the resale value of your device and provides freedom from being tied to a single carrier

Unlocking your Oppo A37 smartphone can be a great way to gain more flexibility and freedom when it comes to choosing your preferred carrier network. Whether you’re traveling abroad, switching providers for better rates, or simply want to sell your device, an unlocked phone gives you the ability to use any compatible SIM card from any carrier.

This comprehensive guide will walk you through the process of unlocking your Oppo A37, exploring various methods, their pros and cons, and everything you need to know to get started.

Understanding Carrier Locking

Most smartphones purchased from carriers or retailers come “locked” to a specific network. This means that the device can only be used with a SIM card from the carrier it was originally purchased from, preventing you from using other networks.

Carrier locking is a common practice employed by network providers to ensure that customers remain loyal to their services and don’t switch to competitors. However, once your contract period ends or your device is paid off, you have the right to request an unlock code from your carrier, allowing you to use your phone on any compatible network.

Benefits of Unlocking Your Oppo A37

Unlocking your Oppo A37 offers several advantages, including:

  1. Freedom to Choose Any Carrier: With an unlocked device, you can easily switch to a different carrier that offers better coverage, plans, or rates in your area without being tied down to a single provider.
  2. Increased Resale Value: An unlocked phone typically has a higher resale value compared to a locked one, as potential buyers have the flexibility to use it with their preferred carrier.
  3. Convenient for International Travel: When traveling abroad, you can easily purchase and use a local SIM card, avoiding expensive roaming charges from your home carrier.
  4. Future-Proof Your Device: Even if you don’t plan to switch carriers immediately, having an unlocked phone ensures that you have the option to do so in the future without any hassles.

Methods to Unlock Your Oppo A37

There are several methods available to unlock your Oppo A37, each with its own advantages and disadvantages. Here are some of the most common options:

1. Remote Unlocking Services

Remote unlocking services are one of the most convenient and hassle-free methods to unlock your Oppo A37. These services typically require you to provide your device’s IMEI number (a unique identifier for your phone) and the network it’s currently locked to.

Once you’ve submitted your information and made the payment, the service provider will remotely request an unlock code from the carrier on your behalf. This code can then be entered into your device to remove the carrier lock.


  • Convenient and straightforward process
  • No need to send your device anywhere
  • Typically faster than other methods


  • Requires a fee, which can vary depending on the service provider
  • Success is not guaranteed, as carriers may refuse to provide an unlock code in some cases

Recommended Remote Unlocking Services for Oppo A37:

  • MobileUnlocks: A reputable and widely used service with a high success rate and live order tracking.
  • UnlockBase: Offers competitive pricing and a user-friendly website for unlocking various Oppo models.
  • DirectUnlocks: Provides a reliable and affordable unlocking service with responsive customer support.

2. Carrier Unlocking

If your Oppo A37 is still under contract or has not been paid off in full, you may be able to request an unlock code directly from your carrier. Most carriers have specific policies and requirements for unlocking devices, such as:

  • Completing a certain period of service (e.g., 12 months)
  • Paying off the remaining balance on your device
  • Providing proof of purchase or ownership

Once you’ve met the carrier’s requirements, you can typically request an unlock code through their customer service channels (e.g., online, over the phone, or in-store).


  • Often free or low-cost if you meet the carrier’s requirements
  • Officially sanctioned by the carrier, ensuring compatibility


  • Strict requirements and policies that may vary between carriers
  • Potential delays or denials if you don’t meet the criteria

3. Third-Party Unlocking Tools

Several third-party software tools and applications claim to be able to unlock your Oppo A37 without involving the carrier. These tools typically work by exploiting vulnerabilities in the device’s software or bypassing the carrier lock through various methods.

While some of these tools may be effective, it’s important to exercise caution when using them, as they can potentially void your device’s warranty, cause software instability, or even brick your phone (render it unusable) if not used correctly.


  • Potentially cheaper than other methods
  • No need to involve the carrier


  • Questionable legality and potential security risks
  • May void your device’s warranty
  • Risk of bricking or damaging your phone if not used properly

Popular Third-Party Unlocking Tools for Oppo A37:

  • Dr.Fone – Screen Unlock (Android): A reputable tool from Wondershare that claims to unlock various Android devices, including the Oppo A37.
  • iToolab UnlockGo (Android): Another widely used tool that promises to remove screen locks and carrier locks on Android devices.

Note: While these tools may work for some users, it’s essential to thoroughly research and understand the potential risks before attempting to use them.

Step-by-Step Guide: Unlocking Your Oppo A37 with a Remote Service

If you’ve decided to use a remote unlocking service, here’s a step-by-step guide to help you through the process:

  1. Gather the Required Information: You’ll need to have your Oppo A37’s IMEI number and the name of the carrier it’s currently locked to. To find your IMEI number, simply dial *#06# on your phone’s dialer.
  2. Choose a Reputable Unlocking Service: Research and select a reliable remote unlocking service provider, such as MobileUnlocks, UnlockBase, or DirectUnlocks.
  3. Visit the Service Provider’s Website: Navigate to the chosen service provider’s website and locate the section for unlocking Oppo devices.
  4. Enter Your Device Information: Provide the required details, including your Oppo A37’s IMEI number and the carrier it’s locked to.
  5. Make the Payment: Most remote unlocking services charge a fee for their services. Follow the prompts to securely make the payment using your preferred method (e.g., credit card, PayPal).
  6. Wait for the Unlock Code: After submitting your request and payment, the service provider will work on obtaining the unlock code from the carrier. This process can take anywhere from a few minutes to a couple of days, depending on the service and carrier.
  7. Enter the Unlock Code: Once you receive the unlock code (typically via email), follow the instructions provided by the service provider to enter the code into your Oppo A37. This will remove the carrier lock, allowing you to use any compatible SIM card from any carrier.
  8. Test Your Unlocked Device: After entering the unlock code, restart your Oppo A37 and insert a SIM card from a different carrier to ensure that the unlocking process was successful.

Remember, while remote unlocking services are generally safe and reliable, there’s always a small risk that the carrier may refuse to provide an unlock code for your specific device. In such cases, you may need to explore alternative unlocking methods or contact the service provider for further assistance.


Unlocking your Oppo A37 smartphone can open up a world of possibilities, allowing you to freely choose your preferred carrier, take advantage of better plans and rates, and increase the resale value of your device. Whether you opt for a remote unlocking service, request an unlock code from your carrier, or explore third-party tools, it’s essential to weigh the pros and cons of each method and proceed with caution.

By following the steps outlined in this guide, you’ll be well-equipped to unlock your Oppo A37 safely and effectively, giving you the freedom to use your device on any compatible network worldwide.