This is a free font changer app for OPPO brand and Samsung Galaxy brand phone.

This app includes many handwritten style fonts.
Compatible device
☆ Samsung Galaxy Brand Mobile Device
☆ Oppo Brand Mobile Device
☆ Color OS Device
☆ HTC Sensor series
☆ Partial Samsung Galaxy devices
☆ Launcher support change font
☆ Rooted Android devices (Superuser permissions)

.Give me feedback if cannot use.