Like many devices, the OnePlus 12 smartphone faces some software-related challenges. A notable issue is rapid battery depletion, which is troubling, especially since the phone is highly regarded for its battery life and comes with an $800 price tag. Fortunately, many of these problems can be resolved. Here are effective solutions for its common issues.

12. Fog inside the camera lens

In colder weather, the camera lenses of the OnePlus 12 may fog up. This can occur if the back cover or camera cover is loose, allowing moisture to enter. When warm air hits the cool lenses, condensation forms, making it difficult to capture clear images. The fog usually dissipates once you return to a warmer place.

Although the situation is manageable, it shouldn’t be a hassle for users. Contact OnePlus customer support to report the issue; they may offer a repair or replacement. You can reach out via their website’s email form. However, some users, especially in areas with limited support, have had difficulty obtaining a replacement.

One workaround for foggy lenses is to suspend your phone over a dehumidifier while recording a video at the highest resolution for about 30 minutes. The processor’s heat combined with the dehumidifier will help evaporate the moisture.

If you don’t have a dehumidifier, try placing your device in a breathable bag with silica gel packets to absorb moisture. Avoid using plastic bags, as they can trap moisture and worsen the issue; instead, opt for mesh or microfiber cloth bags.

11. A green line on the display

Green lines appearing on a phone’s screen are often associated with OLED displays. While many devices have this issue, OnePlus users see it more frequently due to the panels being sourced from Samsung. Although the OnePlus 12 and 12R typically don’t have this problem since the company switched to BOE panels, it’s still possible.

If you notice green lines, take a screenshot to determine if it’s a software malfunction or a hardware flaw. If the green line is absent in the screenshot viewed on another device, it’s likely a software issue. If the line shows up in the screenshot, it suggests a hardware problem.

Unfortunately, there’s no fix for hardware issues on your end. Reach out to OnePlus support and provide them with the screenshot as evidence.

10. Low call volume

Experiencing low call volumes can make conversations difficult. If you encounter this on your OnePlus 12, the issue often stems from a dirty speaker grille. Accumulated particles like sweat, skin cells, and oil can block the speaker, muffling sound and reducing clarity.

To clean the speaker grilles at both the top and bottom of your device, use a soft-bristled toothbrush along with a bottle of isopropyl alcohol. This alcohol evaporates quickly, minimizing moisture risk if not overused. Gently scrub the grille with the toothbrush to clear dirt.

Next, spray a small amount of alcohol onto the grill and let it sit for around 30 seconds to dissolve any stubborn debris. Wipe the area afterward with a cloth to remove any remaining alcohol and restore sound quality.

9. Slow internet connection

A sluggish internet connection can be quite frustrating, especially when performing simple tasks. If your OnePlus 12 is slower than other devices on the same Wi-Fi network and shows full bars, it may be connected to the slower 2.4GHz band instead of the faster 5GHz band.

Your device typically connects to the strongest Wi-Fi signal. When you’re far from the router, the 2.4GHz signal, while slower, may seem stronger because it has a longer range than the faster 5GHz signal. Consequently, your device may choose the 2.4GHz band for connectivity despite its slower speeds.

To resolve this, disconnect and reconnect to the network; your phone should revert to the 5GHz band if available. To set up your router for 5GHz, use your router’s configuration page via its IP address in a web browser, log in with your admin credentials, navigate to the wireless settings, select the 5GHz band, and save the changes. A router reboot may be necessary.

Another reason for slow internet could be outdated firmware in your Wi-Fi router. Update it through the router’s configuration page to fix bugs and enhance performance. Alternatively, consider resetting your network settings, as this will erase saved networks and paired Bluetooth devices.

8. Gmail app freezing

Many OnePlus 12 users report that the Gmail app frequently freezes or crashes. Adjusting the RAM expansion feature on your device might help. Reduce the expansion to 4GB or turn it off entirely to ensure Gmail uses fewer resources, which could reduce freezing issues. Increasing it to 6GB or more can overwhelm the app.

Access the settings by going to Settings > About device > RAM and adjusting the RAM settings. Additionally, clearing the Gmail app’s cache and data will remove temporary files stored by the app. Clearing the app’s data or reinstalling it will reset it to its default state, but this will require you to log in again.