Kopierad från länken (https://forums.oneplus.net/threads/oneplus-2-regional-versions-explained.338780/) på OP forum
Here’s a breakdown of the differences (for EU/NA, bands in bold only available on that version):
EU/Asia
GSM: 850, 900, 1800, 1900MHz
WCDMA: Bands 1/2/5/8
FDD-LTE: Bands 1/3/5/7/8/20
TDD-LTE: Bands 38/40/41
3 and 20 are used almost all over Europe, but not at all in North America. Band 8, although available in both versions, is used in Europe and India but is seeing increasing adoption worldwide.
North America
GSM: 850, 900, 1800, 1900MHz
WCDMA: Bands 1/2/4/5/8
FDD-LTE: Bands 1/2/4/5/7/8/12/17
For NA, the removal of bands 3 & 20 allows us to add all the GSM bands you’ll need.
China
GSM: 850, 900, 1800, 1900MHz
WCDMA: 1/2/5/8
TD-SCDMA: 34/39
TDD-LTE: 38/39/40/41
FDD-LTE: 1/3/7
The Chinese version will have very limited 4G compatibility in Europe and North America. More importantly, it only has one IMEI meaning you will not have dual-SIM capability outside of China. If you like having dual SIMs, do not buy the Chinese version.
Last edited: Aug 19, 2015