big spritefont 4096x4096 will give me problems?

i am using a big spritefont, 4096x4096, this will be a problem for my game in mobile or desktop? i was thinking use localy webfonts but i am reading about that webfonts have problems to work in mobile devices, i cant use small size spritefont because my project have 2500 chinese characters.

The spritefont will take 4096*4096*4= 67108864 bytes = 67 Mb of image memory during gameplay..

Sounds like a lot to me..

Some devices only support a max texture size of 2048 (e.g. 1st gen Nexus 7). On those devices, the image will fail to display. That's why the editor recommends a maximum image size of 2048x2048.

The spritefont will take 4096*4096*4= 67108864 bytes = 67 Mb of image memory during gameplay..

Sounds like a lot to me..

Does using local webfonts have any disadvantage in mobile? Chinese characters are a lot and i cant use a small spritefont to my purposes.