The very first thing that you need to do to change fonts in Oppo R1011 is open the setting, then go to display. After you done, you may see this...
The next step is tap the Font setting, and it will open.
Now, since I haven't download any new font yet, I must download some new fonts for my Oppo R1011. To do that, tap the "Online fonts". You then will be brought to store.
Now, you can choose any of them. Me, I chose at the fonts app at the top of the result.
Of course, you need to download it. Otherwise, you don't have new font in your Oppo R1011 (You're welcome but I'm not Sherlock).
Anyway, I have some new fonts now. You don't have to follow this step to download new font for Oppo R1011. You can search it by yourself in App Store or Play Store in Oppo R1011.
See? New fonts. I should thanks to Fonts Free for these pretty fonts. Now, I want to change font in my Oppo R1011.
To do that, first, you need to choose and tap it. Then, you will see this.
Tap apply and you are done. If you want to change the font for you Oppo R1011, just go to Setting > Display > Font. I believe you already know what to do next.