One of US mobile operators, Sprint, said Wednesday that it was delaying the launch of the HTC EVO 4G LTE smartphone after the devices were blocked by US customs.

The US authorities appear to be enforcing the win by Apple on trade compliance by Android devices. Apple claimed that Android devices infringed on its one-tap screen commands.

Sprint confirmed this in a statement and stated that “HTC is working to resolve this issue.” HTC is reported to be in the process of tweaking its future phones to comply by the new requirement. Sprint further said , “We can’t provide specific timing for product availability at this time.”

Sprint confirmed that it received a statement from HTC saying two phones being imported into the US were “delayed due to a standard US Customs review.”

Through the US International Trade Commission, Apple was handed a “limited exclusion order” directing that HTC stop bringing offending smartphones into the United States effective on April 19.

Apple has accused HTC and other Android smartphone makers of infringing on its patents. A separate but similar case is pending against Samsung.