Although, I did the upgrade via the CM OTA update which took about five (5) minutes to complete before it rebooted to the recovery (TWRP) to complete the upgrade.
Guess what! I have being holding an entirely new phone since the upgrade. The look, the feel, graphics, camera, signal strength in short; the entire system of the phone has changed for good.
Here, I highlighted some of the outstanding improvements of the android 5.1.1 on the Samsung Galaxy S4, i9500.
BATTERY LIFE
Although, I have used it for just about 48 hours, I have noticed significant improvements in my Galaxy S4 battery live span, even with data and every apps running; it serves me better and longer than before. Though, it takes longer time to get fully charged, it lasts much longer than usual.
SIGNAL STRENGTH
Talking of the signal strength, I must say that I have a +(plus) in this as well. The H and H+ becomes more stable and WiFi/Hotspot range is noticeably better. This might be one of the reasons why the battery span has improved because it does not hit up. In fact, it feels cooler than I could remember.
MULTIMEDIA
I am not sure if the improvement in the camera and video output is from the camera or not, but it is noted that the video quality improved following the upgrade and the pictures taking after the upgrade are of better quality.
CM 12.1, android 5.1.1 for the Samsung Galaxy S4, i9500 comes with AudoFX, an application for sound management. This among other things help the Samsung Galaxy S4 produce a better sound quality compare to the previous updates.
GUI, THE GRAPHICAL USER INTERFACE
No doubt, this is probably the first thing I should have mentioned here because it is undoubtedly the first notable improvement in the CM-12.1 for Samsung Galaxy S4.
The Graphical User Interface, GUI is more glossy, smoother and even faster compare to the previous CM 11 for the same phone.
SPEED
The Samsung Galaxy S4 i9500 is powered with Quad-core 1.6 GHz Cortex-A15 & quad-core 1.2 GHz Cortex-A7 CPU (View full Specification here), with Such a CPU; the CM 12.1 is able to run faster and smoother on the phone.
CONCLUSION
The overall experience of the CM 12.1 on the Samsung Galaxy S4, i9500 in the past 48 hours of the upgrade has being great and loving. No lagging, no bugs and no irritations have being experienced so far.
If you have a Samsung Galaxy S4 and would like to upgrade it to the CM 12.1 which is android 5.1.1, in my opinion; you now have a GO! You may download CM 12.1, Android 5.1.1 for your Samsung S4 here. Learn how to upgrade your Samsung S4 here.
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