Samsung Gear S2 Sport Repair Guide: SM-R720 & R730

Nov 12, 2025 by Alex Braham 51 views

Hey guys! Are you having trouble with your Samsung Gear S2 Sport (SM-R720 or SM-R730)? Don't worry, you've come to the right place! This comprehensive guide will walk you through some common issues and how to tackle them. Whether it's a cracked screen, a battery that won't hold a charge, or software glitches, we'll provide you with step-by-step instructions and helpful tips to get your smartwatch back in tip-top shape. Let's dive in and get that Gear S2 Sport working like new again!

Identifying Your Model: SM-R720 vs. SM-R730

Before we get started with any repairs, it's crucial to know exactly which model of the Samsung Gear S2 Sport you have. The two models, SM-R720 and SM-R730, are very similar, but there might be subtle differences in components or repair procedures. Here's how to identify your model:

Check the Back of the Watch: The model number is usually printed on the back of the watch casing. Look for a small label or engraving that clearly indicates either SM-R720 or SM-R730.
Check the Original Packaging: If you still have the original box, the model number should be printed on one of the labels.
Check the Watch's Software: You can also find the model number in the watch's settings menu. Go to Settings > About Gear > Model Number. This will display the exact model number of your device.

Knowing your model number is essential for ordering the correct replacement parts and following the right repair guides. Using the wrong parts or instructions could potentially damage your device further. So, take a moment to confirm which Gear S2 Sport you own before proceeding with any repairs.

Common Problems and Solutions

Let's explore some of the most frequent issues that Samsung Gear S2 Sport owners encounter and how to troubleshoot them. We'll cover everything from screen replacements to battery issues, and offer practical solutions to get you back on track.

1. Screen Replacement

A cracked or broken screen is one of the most common problems with smartwatches. Accidents happen, and sometimes a simple bump can lead to a shattered display. Replacing the screen on your Samsung Gear S2 Sport requires patience and precision, but it's definitely a repair you can do yourself with the right tools and guidance.

Tools You'll Need:

Heat Gun or Hair Dryer: To soften the adhesive holding the screen in place.
Plastic Opening Tools: To gently pry the screen away from the watch body without causing damage.
Small Phillips Head Screwdriver: For removing any screws securing the display.
New Replacement Screen: Make sure it's the correct model for your SM-R720 or SM-R730.
Adhesive: To re-seal the new screen to the watch body. B-7000 is a popular choice.

Steps to Replace the Screen:

Power Off Your Gear S2 Sport: This is crucial to prevent any electrical damage during the repair.
Apply Heat to the Screen Edges: Use a heat gun or hair dryer on a low setting to gently heat the edges of the screen. This will soften the adhesive and make it easier to remove the screen. Be careful not to overheat the device, as this could damage the internal components.
Insert a Plastic Opening Tool: Once the adhesive is softened, insert a thin plastic opening tool between the screen and the watch body. Gently pry around the edges, working your way slowly to avoid cracking the screen further. If you encounter resistance, apply more heat.
Disconnect the Screen Connector: Once the screen is loose, carefully lift it up and locate the screen connector. Use a plastic opening tool to gently disconnect the connector from the motherboard.
Remove the Old Screen: With the connector detached, you can now remove the old screen completely.
Clean the Frame: Before installing the new screen, clean the frame of any residual adhesive. Use a clean cloth and some isopropyl alcohol to ensure a clean surface for the new adhesive.
Connect the New Screen: Carefully connect the new screen's connector to the motherboard. Make sure it clicks into place securely.
Test the New Screen: Before sealing the screen, power on your Gear S2 Sport and test the new screen to make sure it's working properly. Check for any dead pixels or touch sensitivity issues.
Apply New Adhesive: If the screen is working correctly, apply a thin layer of adhesive around the edges of the frame.
Attach the New Screen: Carefully align the new screen with the frame and press it down firmly. Use clamps or rubber bands to hold the screen in place while the adhesive dries. Allow several hours for the adhesive to fully cure.
Reassemble and Power On: Once the adhesive is dry, remove the clamps or rubber bands and power on your Gear S2 Sport. Your new screen should now be fully functional.

2. Battery Replacement

Is your Samsung Gear S2 Sport battery draining too quickly or not holding a charge at all? A battery replacement might be necessary to restore your smartwatch's battery life. Over time, batteries degrade and lose their capacity to hold a charge. Replacing the battery can significantly improve your device's performance.

Tools You'll Need:

Plastic Opening Tools: To open the watch casing without causing damage.
Small Phillips Head Screwdriver: For removing screws.
New Replacement Battery: Ensure it's compatible with your SM-R720 or SM-R730 model.
Heat Gun or Hair Dryer: To loosen adhesive.
Spudger: For disconnecting connectors.

Steps to Replace the Battery:

Power Off Your Gear S2 Sport: Always start by turning off your device to avoid any electrical issues.
Heat the Back Cover: Use a heat gun or hair dryer to gently heat the back cover of the watch. This will soften the adhesive holding it in place.
Pry Open the Back Cover: Insert a plastic opening tool between the back cover and the watch body. Carefully pry around the edges to release the adhesive. Take your time and apply heat as needed.
Disconnect the Battery Connector: Once the back cover is open, locate the battery connector on the motherboard. Use a spudger to gently disconnect the connector.
Remove the Old Battery: The battery may be held in place with adhesive. Use a plastic opening tool to carefully pry the battery away from the frame. Be careful not to puncture or damage the battery.
Install the New Battery: Place the new battery in the frame and connect the battery connector to the motherboard. Make sure it clicks into place securely.
Reattach the Back Cover: Align the back cover with the watch body and press it firmly into place. Ensure that it's properly sealed.
Charge the Battery: Connect your Gear S2 Sport to a charger and allow it to fully charge. This will help calibrate the new battery.
Power On and Test: Once the battery is charged, power on your device and test the battery life. Monitor the battery usage to ensure it's performing as expected.

3. Software Issues and Resetting

Sometimes, the Samsung Gear S2 Sport may experience software glitches that can cause various problems, such as freezing, crashing, or slow performance. In many cases, performing a reset can resolve these issues and restore your device to its optimal state.

Soft Reset:

A soft reset is a simple reboot of your device, similar to restarting a computer. It can often fix minor software glitches without deleting any data.

Press and Hold the Power Button: Press and hold the power button for about 10-15 seconds until the watch restarts.
Check if the Issue is Resolved: After the watch restarts, check if the problem has been resolved. If not, you may need to try a hard reset.

Hard Reset (Factory Reset):

A hard reset, also known as a factory reset, will erase all data and settings on your Gear S2 Sport, restoring it to its original factory state. This should only be done as a last resort, as it will delete all your personal data.

Back Up Your Data: Before performing a hard reset, back up any important data, such as contacts, apps, and settings.
Enter Recovery Mode: To enter recovery mode, power off your Gear S2 Sport. Then, press and hold the power button until the 'Rebooting' message appears. Immediately release the power button and quickly press it several times until the recovery menu appears.
Select 'Wipe Data/Factory Reset': Use the power button to navigate the recovery menu and select 'Wipe data/factory reset'.
Confirm the Reset: Confirm the reset by selecting 'Yes' when prompted.
Reboot Your Device: After the reset is complete, select 'Reboot system now' to restart your Gear S2 Sport.
Set Up Your Device: Once the device restarts, you'll need to set it up as if it were a brand new device. Follow the on-screen instructions to configure your settings and restore your data from the backup.

Tips for Preventing Future Problems

Prevention is always better than cure! Here are some tips to help you keep your Samsung Gear S2 Sport in good condition and avoid common problems:

Protect Your Screen: Invest in a screen protector to shield your display from scratches and cracks. Tempered glass screen protectors offer excellent protection against impact.
Avoid Extreme Temperatures: Don't expose your Gear S2 Sport to extreme temperatures, as this can damage the battery and other components.
Keep It Dry: While the Gear S2 Sport is water-resistant, it's still a good idea to avoid prolonged exposure to water. Dry it off immediately if it gets wet.
Regularly Update Software: Keep your device's software up to date to ensure optimal performance and security. Software updates often include bug fixes and performance improvements.
Handle with Care: Treat your Gear S2 Sport with care and avoid dropping it or exposing it to excessive force.

Conclusion

Repairing your Samsung Gear S2 Sport (SM-R720 or SM-R730) can seem daunting, but with the right tools and guidance, it's totally achievable. Whether you're tackling a screen replacement, battery issue, or software glitch, remember to take your time and follow the instructions carefully. By taking proactive steps to maintain your device, you can extend its lifespan and enjoy its features for years to come. Good luck with your repairs, and feel free to reach out if you have any questions!