Does Elephone U Pro Work in Serbia?

Elephone U Pro is a GSM device that supports the following bands:

GSM: B2/B3/B5/B8 (1900/1800/850/900)
WCDMA: B1/B8 (2100/900)
TD-SCDMA: B34/B39 (2100/1900)
CDMA: BC0 (800)
FDD-LTE: B1/B3/B7/B20 (2100/1800/2600/800)
TDD-LTE: B38/B39/B40/B41(2600/1900/2300/2500)

We check it for you that Elephone U Pro supports working in Serbia on 4G LTE with most of the carriers.
More details about Elephone U Pro can be seen here: