Marques Brownlee spotted the mistake:

Marques Brownlee?@MKBHD

 Might as well add "Twitter police" to my bio at this point ????‍??

A separate analysis suggested that more than 300 of its tweets had been sent via the same mobile app.

The @SamsungMobileNG account was shut down and deleted soon after news of the mistake started to spread.

The gaffe was revealed by the tweet bearing the words "via Twitter for iPhone" in its bottom right-hand corner.

The Samsung Nigeria account has now been reinstated, but the offending tweets have been removed from its historical feed.