Guide To Fix OnePlus One CM 12 Problems

If you are the Oneplus one users and recently update you phone with the latest COS 12 or CM 12 and facing lots of problems on your phone. Here is a good news for you, now you can easily fix most of the issues on your phone. The major problem which Oneplus users are facing are Wifi Connection problem, Can’t connect to data, Problem Detecting your SIM card, COS 12 Themes app issue and lots more. Here are the fix for the all the major problems, all you have to make some changes on the settings of the phone and flash some file to resolve all issues on your phone. All credit goes to the Oneplus forum member indest who come with these master fixes.

Check out the following lists to resolve the problem with Cyanogen OS 12 update.

Guide To Fix OnePlus One CM 12 Problems

Fix OnePlus One CM 12 Problems

1. Wi-Fi Coonection problem

Most of the CM12 users are facing problem with Wifi connectivity and can’t access the internet on the phone. To solve this problem, you need to flash one file with the help of recovery on your phone.

Fix: Flash this file

2. Data connection problem and phone shows ‘Emergency Calls Only’

Another major problem that most of the CM12 users reported on the forums. You can fix it easily. Go to Settings>> Mobile Network>> Access Point Name>> select your carrier.

If the problem still exists, go to Settings>> Mobile Network>> Network Operator>> select your carrier.

4. Can’t connect to data

Pull down on the top right of the screen (to access the quick settings menu)> Select the network icon (the right triangle)> Toggle on (located on the top right of the menu)

5. Can’t send MMS

Don’t worry you can fix it very easily. Enter the default messenger>> click 3 vertical dots on the top right>> Settings>> Auto-Enable Data>> toggle ON.

6. SIM card Detection Problem

Another major problem most of the users facing after the update. No need to worry about this, Go to Settings> Security> Set up SIM/RUIM Card Lock

7. CM 12 Theme Problems- Can’t change lockscreen wallpaper to “None”

If you want your wallpaper to match your desktop, you must select the same image and apply it to your lock screen.

8. Dail Number and Contacts not visible

Most of the users can’t see the dialer number and contacts on the phone. To fix this issue Go to Settings>> Theme>> System>> Apply

9. Ugly Cyanogen OS 12 theme, icons

Easy to Fix, Go to Settings>> Theme>> System>> Apply

10. Keyboard looks ugly

Go to Settings>> Language & input>> Android Keyboard (AOSP)>> Appearance & Layouts>> Themes>> select the desired theme. Note that the Halo theme is similar to the KitKat keyboard.

11. Laggy App Draw

This is a Trebuchet launcher issue. Download a different launcher from the Play store.

12. Fix Inaccurate GPS

The problem here is that location services do not have permission to obtain your location.

To fix, go to Settings>> Privacy>> Privacy guard>> Click on the 3 vertical dots on the top right of the screen>> Enable “show system apps”> Grant location access to “Android System”, “LocationServices”, “Maps” and “Street View”.

If the problem is still not solved, navigate to: Settings>> Location>> Mode>> High Accuracy.

13. Where is my root?

Lost the root on your device. It is super easy to fix this issue.

Install SU from the Play Store>> Launch SU>> Follow the OnScreen prompts, to root your device.

14. Apps/System crashes constantly

This happens when you perform an OTA update on your phone with a dirty flash. The fix for it is very simple.

Turn off your phone>> press Power + Volume Down buttons together>> in recovery mode wipe the Dalvik Cache and Cache.

15. Fix Battery Problem

Check out the guide here how to increase battery life in Oneplus one.

All the above mention fixes are easy to use and one of the fastest way to solve the common problem in OnePlus one.


Rajesh Rajput is Tech Blogger, who loves to write about Android Tips, How to Guides, Reviews, ROMs, and more.

6 thoughts on “Guide To Fix OnePlus One CM 12 Problems”

  1. Regarding #5. I use the Messenger App from Google. I wasn’t getting MMS. I did the suggestion of going into the Messaging stock app and switching the setting. The problem is that I want to use Messenger as the default app and by doing that it cancels out these changes each time.

  2. Hi, will these fixes work on other devices running CM12.1, specifically the Wi-Fi issue on LG G Pro E980?

  3. How to flash the file zip that i have downloaded for my wifi problem? I dont know how to flash a file

  4. My touch screen not works when i try to click Grant for supersu and when i try to click intall to intall a new apk file

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