• Manual Camera

The Manual Control app offers great manual control to Android users and if you use an Android Lollipop running device, the app should work wonders. The app uses Lollipop’s latest Camera2 API, so that means there are some awesome features but you might miss out if you’re not on the latest Android version yet.
The app lets you manually control the ISO, white balance, shutter speed, focus distance and more. The app is also said to be very fast along with additional features like RAW (DNG) capture, geo tagging, Timer, gridlines and more.

• Camera ZOOM FX

Camera ZOOM FX Premium is a fast and sleek camera app on Android. This is a paid app but the feature list and the user interface makes it worth it. The app includes the best of both worlds, that is professional camera features and fun features.
The Camera ZOOM FX app brings a fast capture along with lots of camera modes like best photo, stable shot, time lapse, HDR and more. The app also gives you the ability to set a hardware key like the volume rocker as the camera button. The app also packs in powerful post processing along with lots of cool editing features for you to enjoy.

• Google Camera

You must be aware of the Google Camera app, which comes pre-installed on Nexus devices. Well if you are not, you should definitely check it out. The app comes with a simple interface but some really cool features.
The app lets you snap pictures quick and fast in several modes like HDR+, Lens blur, Photo sphere, wide angle and panorama. The app also lets you snap pictures while shooting a video. Google Camera also comes with Android Wear support.

• Camera360 Ultimate

Camera 360 is one of the most popular camera apps available for smartphones. The app brings both professional level manual controls and features along with fun editing features.
The app comes with various camera modes, lots of exclusive filters, free cloud album, sharing features, professional editing tools and more. The user interface is also not clean and not cluttered with all the features on the front. The great thing about Camera 360 is it’s free with the Play Store and there are no ads as well. If you want a great all-in-one camera app for your Android device, Camera 360 Ultimate shouldn’t disappoint you.

To the point!
When you found a bug when porting a Kitkat Mediatek ROM, you can try to fix using this methods! 

Just replace it from Stock ROM to your Custom ROMs.
Note: This guide is supposed to work on kitkat roms. for fixing bugs in Lollipop/cm roms see another guide.

Bootloop when porting:
/system/lib/libandroid_runtime.so
/system/lib/libandroid_servers.so
/system/lib/libmedia_jni.so
*Repack boot.image
Showing black screen after logo:
system/lib/libMali.so

RadioFM :
system infmradio
systemetcfirmwaremt6620_patch_e3_hdr.bin
systemetcfirmwaremt6620_patch_e6_hdr.bin 
systemetcfirmwareWMT.CFG 
systemlibmodulesmtk_fm_drv.ko
systemliblibfmcust.so

Sensors :
/system/bin/akmd*
/system/lib/libsensors.so
/system/lib/libms3c_yamaha.so
/system/etc/firmware (folder)
/system/bin/servicemanager

BluetoothWifi not turning OnOff :
systemlibmodulemtk_stp_wmt

Bluetooth :
/system/bin/bd_prov
/system/bin/uim*
/system/bin/hcid
/system/bin/bluetooth*
/system/bin/hciattach
/system/bin/sdptool
/system/xbin/hciconfig
/system/bin/brcm_patchram_plus
/system/lib/libbluetooth_mtk.so
/system/lib/libbluetoothem_mtk.so 

Wifi :
/system/bin/netcfg
/system/bin/dhcpcd
/system/bin/ifconfig
/system/bin/hostap
/system/bin/hostapd
/system/bin/hostapd_bin
/system/bin/pcscd
/system/bin/wlan*
/system/bin/wpa*
/system/bin/netd -> Fix wifi hotspot
/system/lib/libhardwarelegacy.so -> Fix wifi /system/lib/modules/mtk_stp_wmt.ko/system/lib/modules/mtk_wmt_wifi.ko
/system/etc/wifi (folder)
/system/etc/firmware (folder)

Camera :
system/lib/libfeatureio.so - camera not working
/system/etc/media_profiles.xml
/system/lib/libcamera.so
/system/lib/liboemcamera.so
systemlibhwcamera.default.so
systemliblibcamera_client.so
systemliblibcameracustom.so
systemliblibcamer aprofile.so
systemliblibcameraservice.so
systemliblibmhal.so
systemliblibmhalcontent.s o
systemliblibmhaldrv.so
systemliblibmhalmdp.so
systemliblibmhalpipe.so
systemliblibmhalscenario.so
systemliblibmhalutility.so
systemetcpermissionandroid.hardware.camera.fro nt.xml
systemliblibOmx*.so -fix camcoder
systemliblibfeatureo.so -fix cam focus
# camera not working or force close or any other problem
 copy all libs starting with /libcam*.so
#Camera showing wrong model in pic property?
Change model in build.prop
Still not working? Replace following file from STOCK to PORT
system/lib/libexif.so

SD card/Memory:

/system/bin/vold
systemetcvold.fstab -> edit file for swap internal and external
systemetcvold.fstab.nand

*Note:If not present leave this. from kitkat 4.4.x this file hase been moved into boot.img

Storage not mounting:
Decompile framework-res.apk using apktool or apk multitool and replace following file from STOCK framework-res.apk to PORT framework-res.apk
/res/xml/storage_list.xml

GPS:
systemxbinlibmnlp 
/system/etc/gps.conf 

Touch Screen(Haptic):
/system/usr
/system/usrkeylayoutGeneric.kl ->fix HomeKey 

Sim1/2 (RIL):
systemetcfirmwaremodem.img
systemetcpermission (RIL)
/system/bin/stmd
/system/bin/rild*
/system/etc/rril

Audio/Sound:
systemliblibaudio* .so

Ads:
/system/etc/hosts ->replace with new files or use tweak.

Resolution problem:
open build.prop and add following line
ro.sf.lcd_density=240
[ex: 240 but your dpi maybe deferent]

Pixalation in video:
Replace following file from STOCK to PORT
system/lib/libvcodecdrv.so

Flipped touch screen:
Replace following files from STOCK to PORT
system/lib/libinput.so

LED not working:
Replace following files from STOCK to PORT

system/lib/libfeatureio.so
Fix Network / 3G Network:
/ system / etc / agps_profiles_conf
/ system / etc / APNs-conf
/ system / etc / epo-conf
/ system / etc / spn-conf
/ system / etc / virtual-spn-conf-by-efspn
/ system / etc / virtual-spn-conf-by-IMSI


If you know Any tell me ill add them.

See Also


How to fix bugs when porting lollipop,cyanogenmod based roms