OnePlus One: How to fix issues after Cyanogen OS 12 update
Good news for OnePlus One users who were experiencing issues after the Cyanogen OS 12 update. OnePlus forum member indest, has posted a number of issues with their potential fixes on the forum. These issues range from Wi-Fi to the annoying memory leak.
Check out the following lists to resolve the problem with Cyanogen OS 12 update.
Wi-Fi issue
The Cyanogen OS 12 and CyanogenMod 12 have a common issue where the dhcpcd sends incorrect data to the DHCP servers. So even though you are connected to the router, you would still receive an invalid IP address and lose the internet connection.
To fix this issue flash this file.
Irregular data connection and phone shows 'Emergency Calls Only'
It looks like the Cyanogen OS 12 has difficulties detecting the default APN. This issue can be fixed. 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.
Can't connect to data but phone call works fine
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 at the top right of the menu).
How to increase mobile data signals
The Oxygen OS is reported to have a stronger reception and data signal. To install this modem on Cyanogen OS 12 flash this file.
Can't send MMS
Enter the default messenger>> click 3 vertical dots on the top right>> Settings>> Auto-Enable Data>> toggle ON.
Note that this fix is only needed depending on the carrier. If you receive picture messages and the option is disabled for you, do not enable it.
Problem detecting SIM card
Settings>> Security>> Set up SIM/RUIM Card Lock.
Cyanogen OS 12 theme app issue: can't change lock screen wallpaper to None
If you want your wallpaper to match lock screen, select the same image and apply it on your lock screen.
Dialer, numbers and contacts not showing
Go to Settings>> Theme>> System>> Apply
Ugly Cyanogen OS 12 theme
Go to Settings>> Theme>> System>> Apply
New keyboard does not look good
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.
Decrease settings options
Navigate to Settings>> About>> Advanced Mode>> toggle On.
Laggy App draw
This is a launcher issue. You might download different launchers such as Google Now, Nova Launcher or, Apex Launcher from the Play Store.
No more tabs on Chrome
This is said to be a new feature with each tab being treated as a new app in the Recent App menu bar. You can undo this feature by launching Chrome>> select 3 vertical dots on the top right of the screen>> Settings>> Merge tabs and apps>> Off.
No longer silent vibration via Volume keys
There is an Xposed module, posted on XDA forum, for this issue.
Flash Xposed framework
Install Xposed Installer
Install True Silent Mode
Enter Xposed Installer>> Module>> enable True Silent Mode
Finally reboot your phone
Fix Cyanogen OS 12 memory leak
Flash Xposed framework [Use the above download links for Xposed framework and Installer.]
Install Xposed Installer
Install Fix Lollipop Memory Leak module
Enter Xposed Installer>> Module>> enable Fix Lollipop Memory Leak
Reboot the phone
Battery drain when the phone is sleeping
Flash Xposed framework [Use the above download links for Xposed framework and Installer.]
Install Xposed Installer
Install Deep Sleep module
Enter Xposed Installer>> Module>> enable Deep Sleep
Reboot the phone
Fix for inaccurate GPS
This issue crops up since the location services do not have permission to obtain your location. However it can be fixed from Settings>> Privacy>> Privacy gaurd>> click the 3 vertical dots on the top right of the screen>> enable show system apps>> grant location access to Android System, Location Services, Maps, and Street Views.
Still not fixed? Navigate to Settings>> Location>> Mode>> High Accuracy.
Low mic
To resolve the low mic problems head over to XDA development forum here and here.
Email app
The old Email app has been replaced by a new app from Boxer called E-Mail and you will have to set it up.
Can't login with CyanogenMod account
The Cyanogen OS 12 has a new account system called Cyanogen account. The old Cyanogen credentials do not work with the Cyanogen OS 12. You need to make a new account.
To gain root
With the installation of the new stock Cyanogen update, the phone will lose its root. Just install SuperSU from Play Store>> launch SuperSU>> follow the on-screen prompts to root your OnePlus One.
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.
Head over to OnePlus forum to know more about the fixes for Caynogen OS 12.
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