Many users found that upgrading to ColorOS 14 introduced severe lagging, sluggishness, and overheating. Some were forced to visit service centers to downgrade back to ColorOS 13 for a usable phone.
has received several significant firmware updates, primarily transitioning from to ColorOS 14 (Android 14) . Recently, a rollout for ColorOS 15 (Android 15) was also announced for this model, starting in early 2025. Latest Firmware & OS Versions firmware oppo a78 4g hot
You found the hot potato. Drop it. - Y.C. Many users found that upgrading to ColorOS 14
: Later patches have successfully "ironed out" some kinks for certain users, leading to smoother performance and resolved heating issues after manual optimizations like resetting APN settings or updating Google Play services. Oppo A78 4g draining battery a lot Recently, a rollout for ColorOS 15 (Android 15)
After the update, keep the device on a charger with the screen off for a full night to allow the system to complete background optimization. Update Apps:
Dial *#*#6776#*#* to open the "Feature Phone" test menu. Here, you can view your exact firmware build date, bootloader version, and—most importantly—the . If your phone feels sluggish, check if "Thermal Level" shows "3" or higher.